2008 September Roadshow Presentation FINAL Long Form fileor performance, capital expenditures, financing needs and other information that is not historical information. When used in

1

Celanese CorporationSeptember 2008

2

Forward looking statements; Reconciliation and use of non-GAAP measures to U.S. GAAP This presentation may contain “forward-looking statements,” which include information concerning the company’s plans, objectives, goals, strategies, future revenues or performance, capital expenditures, financing needs and other information that is not historical information. When used in this presentation, the words “outlook,”“forecast,” “estimates,” “expects,” “anticipates,” “projects,” “plans,” “intends,” “believes,” and variations of such words or similar expressions are intended to identify forward-looking statements. All forward-looking statements are based upon current expectations and beliefs and various assumptions. There can be no assurance that the company will realize these expectations or that these beliefs will prove correct. There are a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements contained in this release. Numerous factors, many of which are beyond the company’s control, could cause actual results to differ materially from those expressed as forward-looking statements. Certain of these risk factors are discussed in the company’s filings with the Securities and Exchange Commission. Any forward-looking statement speaks only as of the date on which it is made, and the company undertakes no obligation to update any forward-looking statements to reflect events or circumstances after the date on which it is made or to reflect the occurrence of anticipated or unanticipated events or circumstances.

This presentation reflects three performance measures, operating EBITDA, adjusted earnings per share and adjusted free cash flow as non-U.S. GAAP measures. The most directly comparable financial measure presented in accordance with U.S. GAAP in our consolidated financial statements for operating EBITDA is operating profit; for adjusted earnings per share is earnings per common share-diluted; and for adjusted free cash flow is cash flow from operations.

►Operating EBITDA, a measure used by management to measure performance, is defined as operating profit from continuing operations, plus equity in net earnings from affiliates, other income and depreciation and amortization, and further adjusted for other charges and adjustments. We provide guidance on operating EBITDA and are unable to reconcile forecasted operating EBITDA to a GAAP financial measure because a forecast of other charges and other adjustments is not practical. Our management believes operating EBITDA is useful to investors because it is one of the primary measures our management uses for its planning and budgeting processes and to monitor and evaluate financial and operating results. Operating EBITDA is not a recognized term under U.S. GAAP and does not purport to be an alternative to operating profit as a measure of operating performance or to cash flow from operations as a measure of liquidity. Because not all companies use identical calculations, this presentation of operating EBITDA may not be comparable to other similarly titled measures of other companies. Additionally, operating EBITDA is not intended to be a measure of free cash flow for management’s discretionary use, as it does not consider certain cash requirements such as interest payments, tax payments and debt service requirements nor does it represent the amount used in our debt covenants.

►Adjusted earnings per share is a measure used by management to measure performance. It is defined as net earnings (loss) available to common shareholders plus preferred dividends, adjusted for other charges and adjustments, and divided by the number of basic common shares, diluted preferred shares, and options valued using the treasury method. We provide guidance on an adjusted earnings per share basis and are unable to reconcile forecasted adjusted earnings per share to a GAAP financial measure because a forecast of other charges and other adjustments is not practical. We believe that the presentation of this non-U.S. GAAP measure provides useful information to management and investors regarding various financial and business trends relating to our financial condition and results of operations, and that when U.S. GAAP information is viewed in conjunction with non-U.S. GAAP information, investors are provided with a more meaningful understanding of our ongoing operating performance. This non-U.S. GAAP information is not intended to be considered in isolation or as a substitute for U.S. GAAP financial information.

►The tax rate used for adjusted earnings per share is the tax rate based on our initial guidance, less changes in uncertain tax positions. We adjust this tax rate during the year only if there is a substantial change in our underlying operations; an updated forecast would not necessarily result in a change to our tax rate used for adjusted earnings per share. The adjusted tax rate may differ significantly from the tax rate used for U.S. GAAP reporting in any given reporting period. It is not practical to reconcile our prospective adjusted tax rate to the actual U.S. GAAP tax rate in any future period.

►Adjusted free cash flow is defined as cash flow from operations less capital expenditures, other productive asset purchases, operating cash from discontinued operations and certain other charges and adjustments. We believe that the presentation of this non-U.S. GAAP measure provides useful information to management and investors regarding changes to the company’s cash flow. Our management and credit analysts use adjusted free cash flow to evaluate the company’s liquidity and assess credit quality. This non-U.S. GAAP measure is not intended to be considered in isolation or as a substitute for U.S. GAAP financial information.

3

Who is Celanese?

Leading Global Integrated Producer

of Chemicals and Advanced Materials

ExecutionDemonstrated track record

of delivering results

StrategyClear focus on growth and

value creation

CultureStrong performance

built on shared principles and

objectives

Superior Value Creation► Industry Leader

● Geographically balanced global positions

● Diversified end market exposure

► Strong Cash Generation

► Significant Growth Capability

● Track record of execution

● Clearly defined opportunities

4

A leading global integrated producer

Celanese($ in millions)

2007 Revenue1,2: $6,444 2007 Operating EBITDA2: $1,325

Acetyl IntermediatesConsumer and Industrial Specialties

Advanced Engineered Materials

► Leading global producer of engineered polymers

► Strategic affiliates in Asia

► Leading global producer of cellulose acetate products

► Leading global producer of vinyl emulsion products

► Leading global integrated producer of acetyl products

► Significant presence in all three major regions

2007 Revenue1: $2,9552007 Operating EBITDA: $762

2007 Revenue: $2,4572007 Operating EBITDA: $393

2007 Revenue: $1,0302007 Operating EBITDA: $252

1Represents Net Sales2Total 2007Revenue and Operating EBITDA includes Other Activities of $2 and ($82), respectively

5

An attractive intermediate and specialty business model

Commodity Chemicals

Intermediate ProductsOil & Gas Consumer

Products► Motorola► Toyota► Sherwin-

Williams► Siemens

► Dow*► Lyondell► Methanex

► Rohm & Haas*► ICI*

Specialty Products

► Dow* ► Eastman*► PPG*► FMC*

* Celanese internal peer group

► Exxon► BP► Shell

Celanese

2001 2007Celanese

6

29% 43% 28%

Geographically balanced global positions and diversified end market exposure

Geographic breakdown based on 2007 Net Sales (by destination)End market breakdown based on 2007 estimated Gross Sales

Other10%

Construction7%

Paints & Coatings15%

Automotive9%

Consumer & MedicalApplications11%

Filter Media16%

Consumer & Industrial

Adhesives4%

Textiles6%

Food & Beverage5%

Chemical Additives

5%Paper &

Packaging8%

Performance Industrial Applications4%

7

Integrated businesses aligned to accelerate growth

Acetyl Intermediates (AI)

Formaldehyde

Differentiated Intermediates Specialty ProductsBuilding Block

Raw Materials


(AEM)

Industrial Specialties

(IS)

Consumer Specialties

(CS)

Ticona Engineering

Polymers

Emulsions

Acetate

AT Plastics

Nutrinova

PVOH

Affiliates

Acetic Acid

Anhydride and esters

VAM

8

Since 2000, Celanese has executed against a simple strategic foundation

Divest non-core assets and revitalize underperforming

businesses

Aggressively align with our customers

and their markets to capture growth

Participate in businesses where we have a sustainable competitive

advantage

Leverage and build on advantaged positions that

optimize our portfolio

FOCUS

GROWTH

REDEPLOYMENT INVESTMENTCelaneseStrategic

Pillars

9

11%10%

11% 11%

17%

19%16%15% 15%

17%

19%20%

19%

16%

21%

5%

10%

15%

20%

25%

2000 2001 2002 2003 2004 2005 2006 2007As Reported Pro Forma for Current Portfolio

Operating EBITDA Margin

Today’s portfolio: more resilient and less volatile

► Current portfolio provides overall higher level of earnings

► Historic view with today’s portfolio reflects significantly less volatility

Current portfolio range: 15% - 21%

Historic portfolio range: 10% - 20%

► One-third of portfolio is new to the company since 2000

► Growth objectives will continue to bolster portfolio

10

Operating EBITDA1

Today’s portfolio: higher growth, more specialty

► Strategic growth plans continue to accelerate earnings of specialty businesses● Essentially all growth has come

from specialty businesses● Two-thirds of 2010 Growth

Objectives expected from specialty businesses

► Resulting in:● Higher growth rates● Increased overall earnings

power of the portfolio● Reduced volatility

-

200

400

600

800

1,000

1,200

1,400

2005 2007

12005 and 2007 Operating EBITDA excludes Other Activities of ($122) and ($82) respectively for the periods presented

62%

38%

54%

46%

Acetyl IntermediatesConsumer and Industrial SpecialtiesAdvanced Engineered Materials

$ in

mill

ions

11

Committed to delivering value creation

$350 – $400 million increased EBITDA profile plus EPS potential by 2010

Group Asia Revitalization Innovation Organic Balance Sheet

Operational Excellence

EBITDA Impact

Consumer and Industrial Specialties

X X X X >$100MM


X X X X >$100MM

Acetyl Intermediates X X X >$100MM

Celanese Corporate X X Incremental

EPS

Primary Growth Focus

Ope

ratin

g EB

ITD

AEP

S

12

0

200

400

2007 2008 2009 2010

Operating EBITDA Growth Objectives

On track and clear path forward to accelerate 2010 Growth Objectives

► AEM: volume growth 2X GDP through further penetration

► CIS: Acetate continues execution on revitalization strategy; Emulsions/PVOH revitalization commences

► AI: Nanjing acetic acid plant startup leads integrated complex

Acetyl IntermediatesConsumer and Industrial SpecialtiesAdvanced Engineered Materials

$ in

mill

ions

13

Strong cash flow generation continues

► Strong operating results► Lower cash taxes► Working capital

productivity► 2008 estimate excludes

Kelsterbach relocation► Decrease in overall

borrowing costs since 2005

► Continued improvement in interest coverage ratio

► Improved capital flexibility

1 Adjusted free cash flow calculated as cash flow from operations less capital expenditures less other productive asset purchases less operating cash from discontinued operations plus certain other charges and adjustments

Adjusted Free Cash Flow1

2006 2007 2008E

456385

550

$ in

milli

ons

3.9x

6.5x6.1x

4.5x

0x

1x

2x

3x

4x

5x

6x

7x

2005 2006 2007 2008E

Operating EBITDA/Net Interest

6.9%

8.0% Borrowing Rate

14

Asia: enhancing Celanese’s geographic lead

Revenue breakdown based on 2007 Net SalesEarnings breakdown based on 2007 Operating EBITDA

Approximately 50% of earnings from the fastest growing region

2007 Regional Split

Asia~35%

Asia28%

Revenue

Earnings

2010E Regional Split

Asia~50%

Asia~35%

Revenue

Earnings

15

Asia strategy: high-return growth

► Total investment: $300 -$350 million – over 80% complete

► Total revenue: $600 - $800 million when sold out by 2010

► Incremental EBITDA: $120 -$150 million by 2010

ROIC = 25 – 30%

Investment Dynamics

EmulsionsComplex

Administration &Maintenance

Utilities /Tank Farm

Compounding

Acetic AcidUnit

Acetic AnhydrideUnit

Vinyl AcetateMonomer Unit

Warehouse GUR®

UnitCelstran®

Unit Flare

Celanese Nanjing Integrated Complex

16

Operational Excellence: offset inflation and drive sustainability objectives

2010 Sustainability Goals

0 20 40 60 80% Reduction versus 2005

2007 progress

Fixed Cost Reduction Above Inflation

0

600

2001 2002 2003 2004 2005 2006 2007E

$ m

illio

n pe

r yea

r

Cumulative inflation Injury rate

Greenhouse gases

Air emissions

Waste

Energy

Fixed Cost Reduction

17

14%

Low HighLow

High

Bias for growth and high-return projects

► Dividend

► Debt repayment

► Hold cash

Returning Cash to Shareholders

► Asset expansion – low growth area

► Share repurchase

Returning Cost of Capital

► Cost reduction & revitalization projects

► Asset expansion – high growth area

► Core/bolt-on acquisitions

Significant Value Creation

~75% of Capital

Deployed Since 2005

Ret

urn

on C

apita

l Dep

loye

d/Va

lue

Cre

atio

n

Difficulty of Realizing Value/Skills or Competencies Required

18

Recent initiatives to support growth beyond 2010

► Signed an agreement with Wison to double Nanjing CO supply increasing reliability and supporting future expansion

► Announced agreement with SWRI, a leading Chinese technology institute, to acquire technology licensing rights and development capabilities

► Direct to ChinaAnnounced plans to add polymer compounding unit to the Nanjing Complex

Commissioned start-up of Nanjing Celstran® unit

► Kelsterbach relocationAnnounced 40% capacity expansion at new European POM facility

Recent Actions


Acetyl Intermediates

Recently announced authorization for $400 million share repurchase

19

Celanese core values: our DNA

19

► …a precondition…► …highest standards…

► …attract, develop and retain…► …continuously learn…

► …think globally…► …create growth opportunities…

► …sense of urgency…► …performance driven…

20


21

Providing valuable solutions to extreme requirements

Precise applications in complex

environments

Extreme Requirements

Highly engineered polymers –high performance portfolio

Excellent Products

Collaborative engineering right people – right place

– right time

ExtraordinaryEngineering

AEM “Sweet Spot”► Intensive Engineering ► Highly Specification-

Driven Functional Parts► Leading-Edge

Technical, Market and Application Expertise

22

Value of technology and performance is realized in price

$1/ kg

$100 / kg$10 / kg$3 / kg

Price for Performance

95%

5%

Standard Polymers

High-Performance Polymers (HPP)Engineering Thermoplastics (ETP)

ABS, SAN, ASA: 3%

PE = 31% PP = 21%

PET = 7%

PU = 6%

PVC = 17% PS, EPS = 8%

others = 2%

Range of Products$1/kg

$100/kg$10/kg$3/kg

Pric

e R

ange

Perf

orm

ance

Ran

ges

23

Other 3%

Broad range of end-use applications to targeted niches

Revenue by End-Use 2007 ~ $1 billion

Alternate Fabrication11%

Transportation 45%

● Fuel systems● Safety systems● Mechanical components

Electrical & Electronics 11%

● Communication systems● LED lighting● Connectors

Consumer & Appliance 10%

● Water purification● Durable household goods● Bakeware

Industrial 14%

● Fluid handling● Gearing

● Drug delivery systems● Medical implants

Medical 6%

● Emissions filtration● Textiles

24

14

6

2.5

40

18

Source: Global Insight

Pounds per Vehicle

Source: Celanese Estimates

Significant opportunity for increased penetration in high growth region

0 3,000 6,000 9,000 12,000 15,000

Mexico

Canada

Spain

Brazil

France

S. Korea

India

Germany

U.S.

Japan

China

Vehicle Production (Thousand units)

2006 Production

Production Growth 2006-2012

China production nearly doubles within 5 years

Trend

Global Auto Production

2001

2010E

Highest Current Model

China Current

2007

Advanced Engineered Materials Type of Resins

25

Consumer and Industrial Specialties

26

CS Operating EBITDA 2004 – 2010E

0

50

100

150

200

250

300

350

2004 2005 2006 2007 2008E 2009E 2010E

$ in

mill

ions

CS: successful revitalization and continued execution of current strategy

► Acetate Products revitalization completed in 2007

► Full synergy capture of APL acquisition by 2008

► Nutrinova to offset price declines with volume increases

► Modest growth beyond 2008:

Growth in Asia continues at 2-3%per yearSustainable Operating EBITDA

1Dividends from cost investments

Asian Growth1

Growth Objective

Nutrinova Operating EBITDA

Acetate Base Operating EBITDA

European Initiative

North America/Europe Revitalization

27

0.0

1.0

2.0

3.0

4.0

2006 2010E

Global Vinyl Emulsions Applications Driving 2010 Growth

OthersCelanese

IS: technology enhancements open $1.0 billion of new opportunities

$ in

bill

ions

Applications2010E

Application Sales ($MM)

Growth Rate

Low VOC and nanopaints $400 – $500 10+%

Engineered fabrics/glass fiber $200 – $300 3% - 5%

Enviro-friendly adhesives $100 – $200 8%

China building/construction $100 – $200 30+%

~25%

$1.0 billion expansion = >$250 million in revenue

~30% increase in vinyl space

>25%

28

IS: current regulatory trends in U.S. create new opportunities for VAE

► Current trends in U.S. following European precedent► In 2008, Southern California will further restrict emission requirements in paints► Today, less than 25% of the interior paints meet the contemplated guidelines

$100 - $2001 per ton estimated cost for non-VAE emulsions to achieve standard► U.S. interior paint opportunity ~$1.0 billion

0%

50%

1996 2006 2010E

Celanese Others

European VAE Success

VAE

Shar

e of

Inte

rior

Pain

ts

European Interior Paint Industry Development

1990 2006

VOC Content

EU V

OC

par

ts/li

ter

1999 2008

US

VOC

gra

ms/

liter

1999VOC (g/L): 250 – 380

2004VOC (g/L): 100 – 150

VOC Regulatory Trends for Flat to Semi-Gloss Paints

European Standard

VAE provides favorable substitution for low-VOC requirements

1 Based on Celanese estimates

29


30

Advantaged operating costs and favorable supply/demand continues through 2010

2010E Acetic Acid Cost Curve (kt) (based on nameplate capacity)

By-prod

High Cost Supply

Celanese Technology

0 2,000 4,000 6,000 8,000 10,000 14,000

Conventional MeOH/CO

AOPlus™/Leading Competition

Ethanol

Ethylene

12,000Utilization of EffectiveCapacity1(11/07 ): 91% 93% 92% 94% 93% 91% 91%

Acetic Acid Supply/Demand Balance

12008E-2010E effective utilization based on external analysis assumptionsSource: Celanese estimates, available public data

0

2,000

4,000

6,000

8,000

10,000

12,000

2004 2005 2006 2007 2008E 2009E 2010E

kt

High CostLow CostDemand

31

600ktSopo (expansion)

200kt

350kt

Tianjin Bohei

Lunan Cathay (expansion)

A

A

A

200ktDaqing

200ktHualu Hensheng A

Delays continue to be common for acetyl projects

= Project delay

Company announced startup A CE 2005 update CE 2006 update CE 2007 update

500ktAcetex (Tasnee)

150ktSopo

150ktFanavaran

200ktLunan Cathay

200ktWujing

150ktBP / Yaraco

300ktBP/FPC

2008200720062005

425kt

550kt

600kt

Capacity

BP / Sinopec

Celanese Nanjing (Phase 1)

Sipchem

20102009Company

A

A

A

A

A

A

A

A

A

A

A

SU

X

SU

SU

X

X

X

X

SU

SU

Cancelled

X

X

X

X

X

X

X

X

X

SU

SU

X

SU

X

X

X

X

X

= Actual plant startupSUX

32

Increasing Ethylene Costs ($US/ton)1

Volatile Methanol Prices ($US/ton)1

Continued earnings stability from structural improvements and market conditions

►Southern Chemical contract

►Advantaged European methanol

►Producer-type ethylene economics

►Significant captive product consumption

► Ibn Sinadividends

►Select formula-based pricing

►Coal-based CO in NanjingAsia AverageWest Europe North America

1Source: CMAI

200

300

400

500

600

700

800

Q1 2005 Q2 2005 Q3 2005 Q4 2005 Q1 2006 Q2 2006 Q3 2006 Q4 2006 Q1 2007 Q2 2007 Q3 2007 Q4 2007E

Q1 2005 Q2 2005 Q3 2005 Q4 2005 Q1 2006 Q2 2006 Q3 2006 Q4 2006 Q1 2007 Q2 2007 Q3 2007 Q4 2007E

0%

10%

20%

30%

Q105

Q205

Q305

Q405

Q106

Q206

Q306

Q406

Q107

Q207

Q307

Q407

Rolling Four-quarter Average

Operating EBITDA as a % of Revenues

Ope

ratin

g EB

ITD

A a

s a

% o

f Rev

enue

s

Stable Acetyl Intermediates Operating EBITDA Margin

600

700

800

900

1,000

1,100

1,200

1,300

1,400

1,500

33

Value Creation

34

Strong financial performance in 2008

$277$441$71$207Operating Profit

$84$279($117)$134Net Earnings

$135$46$117$24Other Charges/Adjustments

$787

$2.26

$3,714

YTD2008

$328

$0.85

$1,556

2nd Qtr 2007$ in millions (except EPS) 2nd Qtr 2008 YTD2007

Sales $1,868 $3,111

Adjusted EPS $1.20 $1.62

Operating EBITDA $406 $643

35

2008 business outlook (reaffirmed on July 22, 2008)

► Strong underlying industry fundamentals► Acetic acid prices expected to adjust only

modestly in second half of 2008► High raw material and energy costs continue


► Volume growth at 2x GDP for full year – decreasing auto builds in second half of 2008

► Continued high energy and raw material costs expected to pressure margins

► Continued progress with Asia strategy


► Strong underlying industry fundamentals ► Rising energy costs


► High raw material costs continue► Housing and construction softness


2008 Guidance:

Adjusted EPS $3.60 to $3.85

Operating EBITDA$1,355 to $1,415 million

Forecasted 2008 adjusted tax rate of

26%

36

Capital structure and cash flow summary

Operating EBITDA Growth Objectives

0

200

400

2007 2008 2009 2010AI CIS AEM

Clear Growth Objectives

Improved Shareholder Value

Operating EBITDA/Net Interest

Increased Financial Flexibility

Operating EBITDA Margin

Improved Portfolio Performance

11%10%

11% 11%

17%19%

16%15% 15%

17%19%

20%19%

16%

21%

5%

10%

15%

20%

2000 2001 2002 2003 2004 2005 2006 2007As ReportedPro Forma for Current Portfolio

3.9x

6.5x6.1x

4.5x

0x

1x

2x

3x

4x

5x

6x

7x

2005 2006 2007 2008E

$ in

mill

ions

37

Appendix

38

$70

$2572nd Qtr 2007

$68 down 3%$300 up 17%2nd Qtr 2008

Operating EBITDA

Net Salesin millions


Second Quarter 2008:► Net sales increase driven by volume growth (8%) and positive

currency effects (9%) ► Growth in China and non-automotive applications more than offset

impacts of challenging U.S. automotive market ► Higher raw material and energy costs continue to pressure margins► Operating EBITDA decrease primarily due to lower earnings from

equity affiliates

39

Second Quarter 2008:► Net sales increase primarily driven by improved pricing on global

demand and favorable currency impacts ► Higher pricing offset by significantly higher raw material and energy

costs► Operating EBITDA improvement driven by higher dividends from

expanded China acetate ventures


$104$281

2nd Qtr 2007

$107 up 3% $292 up 4%

2nd Qtr 2008

Operating EBITDANet Salesin millions

40

Second Quarter 2008:► Increase in net sales primarily driven by favorable pricing and foreign

currency effects► Volumes pressured by declines in certain North American and

European markets► Operating EBITDA improvement mainly due to higher sales offsetting

raw material cost pressures


$34$355

2nd Qtr 2007

$37 up 9%$386 up 9%

2nd Qtr 2008


41


$148$829

2nd Qtr 2007

$227 up 53%$1,067 up 29%

2nd Qtr 2008


Second Quarter 2008:► Record sales for the quarter attributable to higher pricing on

strong global demand, increased volumes from Nanjing and favorable currency impacts

► Volume and pricing strength more than offset high input costs versus the prior year which included impacts from the Clear Lakeoutage

► Increased dividends from Ibn Sina also contributed to improved Operating EBITDA

42

Reg G: Reconciliation of Adjusted EPS

Adjusted Earnings Per Share - Reconciliation of a Non-U.S. GAAP Measure

(in $ millions, except per share data) 2007 2006 2007 2006Earnings from continuing operations before tax and minority interests 313 125 447 526 Non-GAAP Adjustments: Other charges and other adjustments 1 (93) 15 113 92 Refinancing costs - - 254 - Adjusted earnings from continuing operations before tax and minority interests 220 140 814 618 Income tax provision on adjusted earnings 2 (62) (35) (228) (163)Minority interests (1) (1) (1) (4)Adjusted earnings from continuing operations 157 104 585 451Preferred dividends (3) (2) (10) (10)Adjusted net earnings available to common shareholders 154 102 575 441Add back: Preferred dividends 3 2 10 10Adjusted net earnings for adjusted EPS 157 104 585 451

Diluted shares (millions)Weighted average shares outstanding 151.7 158.7 154.5 158.6Assumed conversion of Preferred Shares 12.0 12.0 12.0 12.0 Assumed conversion of Restricted Stock 0.6 - 0.4 - Assumed conversion of stock options 4.3 1.8 4.3 1.2 Total diluted shares 168.6 172.5 171.2 171.8Adjusted EPS 0.93 0.61 3.42 2.621 See Table 7 for details2 The adjusted tax rate for the three and twelve months ended December 31, 2007 is 28% based on the original full year 2007 guidance.

Twelve Months EndedDecember 31,

Three Months EndedDecember 31,

43

Reg G: Reconciliation of Adjusted EPS

Adjusted Earnings (Loss) Per Share - Reconciliation of a Non-U.S. GAAP Measure

(in $ millions, except per share data) 2008 2007 2008 2007Earnings (loss) from continuing operations before tax and minority interests 247 (168) 465 3 Non-GAAP Adjustments: Other charges and other adjustments 1 24 117 46 135 Refinancing costs - 256 - 254 Adjusted Earnings (loss) from continuing operations before tax and minority interests 271 205 511 392 Income tax (provision) benefit on adjusted earnings 2 (70) (57) (133) (110)Minority interests 1 - 1 0Adjusted Earnings (loss) from continuing operations 202 148 379 282Preferred dividends (2) (3) (5) (5)Adjusted net earnings (loss) available to common shareholders 200 145 374 277Add back: Preferred dividends 2 3 5 5Adjusted net earnings (loss) for adjusted EPS 202 148 379 282

Diluted shares (millions)Weighted average shares outstanding 150.9 156.9 151.4 158.1Assumed conversion of Preferred Shares 12.1 12.0 12.1 12.0 Assumed conversion of Restricted Stock 0.8 0.5 0.6 0.2 Assumed conversion of stock options 4.1 5.2 3.4 4.2 Total diluted shares 167.8 174.6 167.6 174.5Adjusted EPS 1.20$ 0.85$ 2.26 1.621 See Table 7 for details2 The adjusted tax rate for the three months ended June 30, 2008 is 26% based on the forecasted adjusted tax rate for 2008.

Six Months EndedJune 30,

Three Months EndedJune 30,

44

Other Charges:

(in $ millions) 2007 2006 2007 2006Employee termination benefits 5 1 32 12 Plant/office closures 7 (1) 11 (1)Insurance recoveries associated with plumbing cases (2) (2) (4) (5)Insurance recoveries associated with Clear Lake, Texas (40) - (40) - Resolution of commercial disputes with a vendor (31) - (31) - Deferred compensation triggered by Exit Event - - 74 - Asset impairments - - 9 - Ticona Kelsterbach plant relocation 1 - 5 - Other - - 2 4 Total (60) (2) 58 10

Other Adjustments: 1

(in $ millions) 2007 2006 2007 2006Executive severance & other costs related to Squeeze-Out - 2 - 30 Ethylene pipeline exit costs - - 10 - Business optimization 8 8 18 12 Foreign exchange loss related to refinancing transaction - - 22 - Loss on AT Plastics films sale - - 7 - Discontinued methanol production 2 - 16 31 52 Gain on disposal of investment (Pemeas) - (11) - (11) Gain on Edmonton sale (34) - (34) - Other (7) 2 1 (1) Total (33) 17 55 82

Total other charges and other adjustments (93) 15 113 92 1 These items are included in net earnings but not included in other charges.2 Adjusted earnings per share included earnings from its discontinued methanol production which was included in the company's 2007 guidance.

December 31, December 31,

Three Months Ended Twelve Months Ended

Three Months Ended Twelve Months Ended

December 31, December 31,

Reg G: Other Charges and Other Adjustments

Other Charges and Other Adjustments

45

Reg G: Other Charges and Other Adjustments

Reconciliation of Other Charges and Other Adjustments

Other Charges:

(in $ millions) 2008 2007 2008 2007Employee termination benefits 4 25 11 25 Plant/office closures - - 7 - Long-term compensation triggered by Exit Event - 74 - 74 Asset impairments - 3 - 3 Ticona Kelsterbach plant relocation 3 3 5 3 Other - - - 1 Total 7 105 23 106

Other Adjustments: 1

IncomeStatement

(in $ millions) 2008 2007 2008 2007 ClassificationEthylene pipeline exit costs (2) - (2) 10 Other income/expense, netBusiness optimization 9 3 18 5 SG&AForeign exchange loss related to refinancing transaction - 9 - 9 Other income/expense, netTicona Kelsterbach plant relocation (2) - (4) - Cost of SalesPlant closures 7 - 7 - Cost of SalesOther 5 - 4 5 Various Total 17 12 23 29

Total other charges and other adjustments 24 117 46 135 1 These items are included in net earnings but not included in other charges.

June 30, June 30,

Three Months Ended Six Months Ended

Three Months Ended Six Months Ended

June 30, June 30,

46 Segm

ent D

ata

and

Rec

onci

liatio

n of

Ope

ratin

g Pr

ofit

(Los

s) to

Ope

ratin

g EB

ITD

A -

a

Non

-U.S

. GAA

P M

easu

re

(in $

mill

ions

) 20

0720

0620

0720

06N

et S

ales

Adv

ance

d En

gine

ered

Mat

eria

ls25

322

41,

030

91

5

Con

sum

er S

peci

altie

s27

9

22

4

1,11

1

876

I

ndus

trial

Spe

cial

ties

331

309

1,34

6

1,28

1

A

cety

l Int

erm

edia

tes

1,08

383

13,

615

3,

351

Oth

er A

ctiv

ities

1-

62

22

Int

erse

gmen

t elim

inat

ions

(186

)(1

64)

(660

)

(6

67)

Tota

l1,

760

1,43

06,

444

5,

778

Ope

ratin

g Pr

ofit

(Los

s) A

dvan

ced

Engi

neer

ed M

ater

ials

30

29

133

14

5

Con

sum

er S

peci

altie

s69

41

19

9

165

I

ndus

trial

Spe

cial

ties

26

9

28

44

A

cety

l Int

erm

edia

tes

276

10

7

616

45

6

Oth

er A

ctiv

ities

1(7

7)

(46)

(2

28)

(190

)

To

tal

324

14

0

748

62

0

Equi

ty E

arni

ngs

and

Oth

er In

com

e/(E

xpen

se) 2

Adv

ance

d En

gine

ered

Mat

eria

ls7

13

55

55

Con

sum

er S

peci

altie

s3

2

40

24

I

ndus

trial

Spe

cial

ties

-

-

-

(1

)

Ace

tyl I

nter

med

iate

s27

23

78

63

O

ther

Act

iviti

es 1

8

12

-

22

Tota

l45

50

17

3

163

Oth

er C

harg

es a

nd O

ther

Adj

ustm

ents

3

Adv

ance

d En

gine

ered

Mat

eria

ls(1

0)

(1)

(5)

(5)

C

onsu

mer

Spe

cial

ties

(27)

-

(16)

-

Ind

ustri

al S

peci

altie

s(1

)

2

32

16

Ace

tyl I

nter

med

iate

s(9

7)

16

(38)

52

O

ther

Act

iviti

es 1

42

(2)

140

29

To

tal

(93)

15

11

3

92

Dep

reci

atio

n an

d Am

ortiz

atio

n Ex

pens

e A

dvan

ced

Engi

neer

ed M

ater

ials

18

17

69

65

Con

sum

er S

peci

altie

s12

10

51

39

I

ndus

trial

Spe

cial

ties

16

14

59

59

Ace

tyl I

nter

med

iate

s25

23

10

6

101

O

ther

Act

iviti

es 1

2

-

6

5

Tota

l73

64

29

1

269

Ope

ratin

g EB

ITD

A A

dvan

ced

Engi

neer

ed M

ater

ials

45

58

252

26

0

Con

sum

er S

peci

altie

s57

53

27

4

228

I

ndus

trial

Spe

cial

ties

41

25

119

11

8

Ace

tyl I

nter

med

iate

s23

1

169

76

2

672

O

ther

Act

iviti

es 1

(25)

(3

6)

(82)

(1

34)

Tota

l34

9

269

1,

325

1,14

4

1 O

ther

Act

iviti

es p

rimar

ily in

clud

es c

orpo

rate

sel

ling,

gen

eral

and

adm

inis

trativ

e ex

pens

es a

nd th

e re

sults

from

cap

tive

insu

ranc

e co

mpa

nies

.

T

he 2

007

Ope

ratin

g P

rofit

(Los

s) a

nd O

ther

Cha

rges

and

Oth

er A

djus

tmen

ts a

mou

nts

incl

ude

dedu

ctib

le a

ssoc

iate

d w

ith in

sura

nce

reco

very

.2 I

nclu

des

equi

ty e

arni

ngs

from

affi

liate

s, d

ivid

ends

from

cos

t inv

estm

ents

and

oth

er in

com

e/(e

xpen

se).

3 E

xclu

des

adju

stm

ents

to m

inor

ity in

tere

st, n

et in

tere

st, t

axes

, dep

reci

atio

n, a

mor

tizat

ion

and

disc

ontin

ued

oper

atio

ns (S

ee T

able

7).

Thre

e M

onth

s En

ded

Dec

embe

r 31,

Twel

ve M

onth

s En

ded

Dec

embe

r 31,

Reg G: Reconciliation of Operating EBITDA

47

Reg G: Reconciliation of Operating EBITDASe

gmen

t Dat

a an

d R

econ

cilia

tion

of O

pera

ting

Prof

it (L

oss)

to O

pera

ting

EBIT

DA

-

a N

on-U

.S. G

AAP

Mea

sure

(in $

mill

ions

) 20

0820

0720

0820

07N

et S

ales

Adv

ance

d E

ngin

eere

d M

ater

ials

300

257

594

519

C

onsu

mer

Spe

cial

ties

292

281

57

4

55

0

Ind

ustri

al S

peci

altie

s38

6

35

575

1

70

1

Ace

tyl I

nter

med

iate

s1,

067

829

2,16

3

1,66

8

O

ther

Act

iviti

es 1

1

-

1

1

Int

erse

gmen

t elim

inat

ions

(178

)

(1

66)

(369

)

(3

28)

Tota

l1,

868

1,55

63,

714

3,

111

Ope

ratin

g Pr

ofit

(Los

s) A

dvan

ced

Eng

inee

red

Mat

eria

ls37

32

67

68

C

onsu

mer

Spe

cial

ties

46

48

96

96

Ind

ustri

al S

peci

altie

s20

(1

)

37

11

A

cety

l Int

erm

edia

tes

148

91

32

5

223

O

ther

Act

iviti

es 1

(44)

(9

9)

(84)

(1

21)

Tota

l20

7

71

441

27

7

Equi

ty E

arni

ngs,

Cos

t - D

ivid

end

Inco

me

and

Oth

er In

com

e Ex

pens

e A

dvan

ced

Eng

inee

red

Mat

eria

ls11

16

20

30

C

onsu

mer

Spe

cial

ties

48

35

48

35

Ind

ustri

al S

peci

altie

s-

-

-

-

A

cety

l Int

erm

edia

tes

33

18

62

23

Oth

er A

ctiv

ities

11

(2)

5

2

Tota

l93

67

13

5

90

Oth

er C

harg

es a

nd O

ther

Adj

ustm

ents

2

Adv

ance

d E

ngin

eere

d M

ater

ials

1

5

2

5

Con

sum

er S

peci

altie

s-

8

1

9

I

ndus

trial

Spe

cial

ties

3

19

8

19

Ace

tyl I

nter

med

iate

s12

13

20

26

O

ther

Act

iviti

es 1

8

72

15

76

To

tal

24

117

46

13

5

Dep

reci

atio

n an

d Am

ortiz

atio

n Ex

pens

e A

dvan

ced

Eng

inee

red

Mat

eria

ls19

17

39

34

C

onsu

mer

Spe

cial

ties

13

13

27

24

Ind

ustri

al S

peci

altie

s14

16

28

30

A

cety

l Int

erm

edia

tes

34

26

66

50

Oth

er A

ctiv

ities

12

1

5

3

To

tal

82

73

165

14

1

Ope

ratin

g EB

ITD

A A

dvan

ced

Eng

inee

red

Mat

eria

ls68

70

12

8

137

C

onsu

mer

Spe

cial

ties

107

10

4

172

16

4

Ind

ustri

al S

peci

altie

s37

34

73

60

A

cety

l Int

erm

edia

tes

227

14

8

473

32

2

Oth

er A

ctiv

ities

1(3

3)

(28)

(5

9)

(40)

To

tal

406

32

8

787

64

3

1 O

ther

Act

iviti

es p

rimar

ily in

clud

es c

orpo

rate

sel

ling,

gen

eral

and

adm

inis

trativ

e ex

pens

es a

nd th

e re

sults

from

cap

tive

insu

ranc

e co

mpa

nies

.2 E

xclu

des

adju

stm

ents

to m

inor

ity in

tere

st, n

et in

tere

st, t

axes

, dep

reci

atio

n, a

mor

tizat

ion

and

disc

ontin

ued

oper

atio

ns (S

ee T

able

7).

Thre

e M

onth

s En

ded

June

30,

Si

x M

onth

s En

ded

June

30,

48


gmen

t Dat

a and

Rec

oncil

iatio

n of

Ope

ratin

g Pr

ofit

(Los

s) to

Ope

ratin

g EBI

TDA

- a N

on-U

.S. G

AAP

Meas

ure -

Una

udite

d Twelv

e Mon

ths E

nded

Marc

h 31

,Ju

ne 30

,Se

ptem

ber 3

0,De

cem

ber 3

1,De

cem

ber 3

1,(in

$ mi

llions

) 20

0620

0620

0620

0620

06Ne

t Sale

s A

dvan

ced E

ngine

ered

Mate

rials

231

23

0

230

22

4

91

5

Con

sume

r Spe

cialtie

s21

6

223

21

3

224

876

In

dustr

ial S

pecia

lties

311

32

6

335

30

9

1,2

81

Ace

tyl In

terme

diates

809

83

9

872

83

1

3,3

51

Othe

r Acti

vities

15

6

5

6

22

Inter

segm

ent e

limina

tions

(152

)

(167

)

(1

84)

(164

)

(667

)

Tota

l1,4

20

1,457

1,4

71

1,430

5,7

78

Oper

atin

g Pr

ofit

(Los

s) A

dvan

ced E

ngine

ered

Mate

rials

41

38

37

29

145

Con

sume

r Spe

cialtie

s42

47

35

41

16

5

In

dustr

ial S

pecia

lties

15

3

17

9

44

A

cetyl

Inter

media

tes10

3

12

0

12

6

10

7

45

6

O

ther A

ctivit

ies 1

(45)

(56)

(43)

(46)

(190

)

Tota

l15

6

15

2

17

2

14

0

62

0

Equi

ty E

arni

ngs a

nd O

ther

Inco

me/(

Expe

nse)

2

Adv

ance

d Eng

ineer

ed M

ateria

ls14

14

14

13

55

Con

sume

r Spe

cialtie

s-

22

-

2

24

In

dustr

ial S

pecia

lties

-

(1)

-

-

(1

)

A

cetyl

Inter

media

tes7

15

18

23

63

O

ther A

ctivit

ies 1

3

(3)

10

12

22

Tota

l24

47

42

50

16

3

Othe

r Cha

rges

and

Othe

r Adj

ustm

ents

3

Adv

ance

d Eng

ineer

ed M

ateria

ls(2

)

(2)

-

(1

)

(5)

Con

sume

r Spe

cialtie

s-

-

-

-

-

In

dustr

ial S

pecia

lties

1

10

3

2

16

Ace

tyl In

terme

diates

12

14

10

16

52

O

ther A

ctivit

ies 1

13

15

3

(2)

29

Tota

l24

37

16

15

92

Depr

eciat

ion

and

Amor

tizat

ion

Expe

nse

Adv

ance

d Eng

ineer

ed M

ateria

ls16

16

16

17

65

Con

sume

r Spe

cialtie

s11

9

9

10

39

Indu

strial

Spe

cialtie

s14

15

16

14

59

Ace

tyl In

terme

diates

23

32

23

23

101

Othe

r Acti

vities

11

2

2

-

5

To

tal

65

74

66

64

269

Oper

atin

g EB

ITDA

* A

dvan

ced E

ngine

ered

Mate

rials

69

66

67

58

260

Con

sume

r Spe

cialtie

s53

78

44

53

22

8

In

dustr

ial S

pecia

lties

30

27

36

25

118

Ace

tyl In

terme

diates

145

181

177

169

672

Othe

r Acti

vities

1(2

8)

(4

2)

(2

8)

(3

6)

(1

34)

To

tal

269

310

296

269

1,144

*Q

uarte

rly ea

rning

s for

the d

iscon

tinue

d Edm

onton

Meth

anol

14

12

10

16

52

op

erati

ons h

ave b

een i

nclud

ed in

Othe

r Cha

rges

and O

ther A

djustm

ents.

Oxo

Alco

hol D

ivest

iture

**-

-

26

39

65

Tota

l Ope

ratin

g EB

ITDA

- as

repo

rted

269

310

322

308

1,209

**F

or co

mpar

ative

purp

oses

. Th

e Oxo

Alco

hol D

ivesti

ture w

as re

flecte

d as a

disc

ontin

ued o

pera

tion f

or th

e thr

ee m

onths

ende

d Mar

ch 31

, 200

6 and

June

30, 2

006

in co

njunc

tion w

ith re

portin

g the

resu

lts fo

r the

first

and s

econ

d qua

rter o

f 200

7.

1 Oth

er A

ctivit

ies pr

imar

ily in

clude

s cor

pora

te se

lling,

gen

eral

and

admi

nistra

tive e

xpen

ses a

nd th

e re

sults

from

capti

ve in

sura

nce

comp

anies

.2 In

clude

s equ

ity e

arnin

gs fr

om af

filiat

es, d

ivide

nds f

rom

cost

inves

tmen

ts an

d oth

er in

come

/(exp

ense

).3 E

xclud

es a

djustm

ents

to m

inorit

y int

eres

t, ne

t inte

rest,

taxe

s, de

prec

iation

, amo

rtizati

on a

nd d

iscon

tinue

d op

erat

ions.

Thre

e Mon

ths E

nded

49


gmen

t Data

and R

econ

ciliat

ion of

Ope

ratin

g Pro

fit (L

oss)

to O

pera

ting E

BITD

A - a

Non

-U.S

. GAA

P Me

asur

e - U

naud

ited Tw

elve M

onth

s End

edMa

rch 3

1,Ju

ne 30

,Se

ptem

ber 3

0,De

cemb

er 31

,De

cemb

er 31

,(in

$ mi

llions

) 20

0520

0520

0520

0520

05Ne

t Sale

s A

dvan

ced E

ngine

ered

Mate

rials

239

223

21

2

21

3

887

Con

sume

r Spe

cialtie

s21

2

21

9

208

200

83

9

In

dustr

ial S

pecia

lties

206

263

30

5

28

6

1,060

A

cetyl

Inter

media

tes69

0

70

7

731

783

2,9

11

Othe

r Acti

vities

112

8

6

6

32

In

terse

gmen

t elim

inatio

ns(95

)

(99

)

(11

3)

(153)

(46

0)

Total

1,264

1,3

21

1,349

1,3

35

5,269

Oper

ating

Pro

fit (L

oss)

Adv

ance

d Eng

ineer

ed M

ateria

ls39

5

18

(2)

60

Con

sume

r Spe

cialtie

s24

27

21

56

12

8

In

dustr

ial S

pecia

lties

-

5

5

(14)

(4)

A

cetyl

Inter

media

tes14

3

12

1

76

146

486

Othe

r Acti

vities

1(83

)

(33

)

(38

)

(30

)

(18

4)

Total

123

125

82

15

6

48

6

Equit

y Ear

nings

and O

ther

Inco

me/(E

xpen

se) 2

Adv

ance

d Eng

ineer

ed M

ateria

ls12

16

15

11

54

Con

sume

r Spe

cialtie

s-

2

(2)

3

3

In

dustr

ial S

pecia

lties

-

-

-

-

-

Ace

tyl In

terme

diates

12

(10

)

32

35

69

Othe

r Acti

vities

1(8)

18

(2)

5

13

To

tal16

26

43

54

13

9

Othe

r Cha

rges

and O

ther

Adju

stmen

ts 3

Adv

ance

d Eng

ineer

ed M

ateria

ls1

20

4

6

31

C

onsu

mer S

pecia

lties

1

-

10

(24

)

(13

)

In

dustr

ial S

pecia

lties

-

2

8

1

11

A

cetyl

Inter

media

tes19

11

15

(30)

15

O

ther A

ctivit

ies 1

45

(10

)

2

3

40

Total

66

23

39

(44

)

84

Depr

eciat

ion an

d Amo

rtiza

tion E

xpen

se A

dvan

ced E

ngine

ered

Mate

rials

15

14

13

18

60

C

onsu

mer S

pecia

lties

12

12

7

11

42

Indu

strial

Spe

cialtie

s12

11

7

17

47

A

cetyl

Inter

media

tes17

24

35

34

11

0

O

ther A

ctivit

ies 1

2

2

4

1

9

Total

58

63

66

81

268

Oper

ating

EBI

TDA*

Adv

ance

d Eng

ineer

ed M

ateria

ls67

55

50

33

20

5

C

onsu

mer S

pecia

lties

37

41

36

46

160

Indu

strial

Spe

cialtie

s12

18

20

4

54

A

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Reg G: Reconciliation of 2000 – 2006 Operating EBITDA

Total Celanese 2000 2001 2002 2003 2004 2005 1 2006 1

GAAP Operating Profit 78 (470) 162 133 130 573 747 Depreciation & Amortization 364 372 300 328 256 285 283 Other Charges & Other Adjustments 27 472 (1) 6 340 50 40 Equity Earnings and Other Income/(Expense) 58 58 58 92 75 150 174 Operating EBITDA 528 432 519 559 801 1,058 1,244

Net Sales 4,888 4,537 4,535 5,133 5,069 6,070 6,656 Operating EBITDA Margin 11% 10% 11% 11% 16% 17% 19%

Portfolio Adjustment 5% 5% 4% 6% 3% 3% 0%Pro Forma EBITDA Margin for Current Portfolio 16% 15% 15% 17% 19% 20% 19%1Amounts as reported in the 4Q 2006 earnings release

Reg G: 2006 – 2007 Adjusted Free Cash Flow

2006 2007Net cash provided by operating activities 751 566 Capital expenditures (244) (288) Other productive asset purchases (41) (51) Other charges (10) 158 Adjusted free cash flow 456 385

Documents

2008 September Roadshow Presentation FINAL Long Form fileor performance, capital expenditures, financing needs and other information that is not historical information. When used in