18
Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. इंटरनेट मानक !ान $ एक न’ भारत का +नम-णSatyanarayan Gangaram Pitroda “Invent a New India Using Knowledge” प0रा1 को छोड न’ 5 तरफJawaharlal Nehru “Step Out From the Old to the New” जान1 का अ+धकार, जी1 का अ+धकारMazdoor Kisan Shakti Sangathan “The Right to Information, The Right to Live” !ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता ह Bharthari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 1676 (1960): Oleic Acid, Technical [FAD 13: Oils and Oilseeds]

IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

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Page 1: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 1676 (1960): Oleic Acid, Technical [FAD 13: Oils andOilseeds]

Page 2: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional
Page 3: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional
Page 4: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

Gr4

IS I 1676. 1960

Indian StandardSPECIFICATION FOR

OLEIC ACID, TECHNICAL

FO\Irin Reprint JANUARY 1998

( Incorporating Amendment No.1)

UDe 665.127.42

C Copyright 1968

BUREAU OF INDIAN STANDARDSMANAK DRAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

Nounnb" 1960

xxxx2009

Page 5: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

IS, 1676 • 1960\ Reamr-d 199% )

Indian StandardSPECIFICATION FOR

OLEIC ACID, TECHNICAL

Oils. Fats and Soaps Sectional Committee. CAFDC 5

The Swutik Oil M.i1bLtd, Bombay

Directorate or Sugar a: Vanupati (Miniltry or Fooda: AJricuhure )

SHIUF. G. T. M&nzu ( A.l1ml4ll )Da S. L. BAJfMuJu Direetonte GeaeraJ of Suppliel &: DiJpcu1J (Minia-

try of Worlu, Houainl &: Supply)S.... N. BHOWllUt Development WioI, MlDiatry of Commerce &:

IndustryS.... C. ll. DAI D.C.M. ~emic:a.lWorb, Delhi

SHJU H. P. CAl GUPI'A (.4""""SHUJ. B. DAVIU HiDdustan Lever Ltd, Bombay

DR G. S. HA'l'TlAJIlODt ( AlJmuIU)5lftt N. DamAClIIAa The Tata Oil Mi11a Co Lad, Bombay

DR B. G. GUJms ( .4ltmJiIU)S.... S. B. DtrI'rA The Te&tile Auociation ( India) Regd, Bombay

SHIU SA'l'tIK DIIAJ ( .flllrru* )SHIUS. C. GHOIS IDdiaD Soap ad Toiletrin MUm' AIIociation,

Calc:uttaSHal P. R. Artu (A.~)

SHU R. K. MALm Direc:tOnteof Marketinl a: Impection (Miniatry orFood a: Acriculture)

SHIUB. S. MODI The Vaaupad ManuCacturen' AIIociation or India,Bombay

SHU K. G. MATRtJa(~)SKat 011 hAKAaB Harcourt Butler TecbDolocical Imtitute, KanpurSHU H.ll. R.A.JA Bombay Oibced. aDd OiJa &chancc Lid, Bombay

S.... CRAaAJmAl V. M.uJwALA(A""""')

DR H. G. RAllAltaJlll1fA 1laooY GovenlilleDtSoap Factory, BaoCaloreS.... K. A. N. RAG(A""")

C1IGimaDaJ. S. BADAMI

M",*"

DR N. ll. BHOW ( AlUntiW toDrJ. S. Badami)

SHIU Aaau R.uA

( ContWft OIIIGI' 2 )

BUREAU OF' INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR. MARO

NEW DBLHIllOOO1

Page 6: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

( eolllittMMlfrom N' I )

M"u,,1

n. M. L. au GUPJ'ASUI .P.V.IIwL\1f'rA llAo

18 I 1676 • 1960

~ Immumty J.-.rcII IlIItltute, CalcuttaAll lDdia Khadl aDcI VUlqe IodUitriel t •• nS.

BombayDa M. SunVAIAIf CouDdI oI8clmtiBc I: IDdUItrial Reteareb

Da M. SWAMDCATIIAIC ( .u",.,..,,)D. Y. K. S~RARlWfYAil Directorate GeDerai of Health Servicea (M1D1Itry Of

Health )8DJ S. a GAIfOVLY (.4/",.,..,,)

s... L. R. StID MbUatry oIDefeDce (R I: D)DR LAs. O. VUIWC (~ ) Director, lSI

S.,,1arluDR SAIlQO'AL Deputy DIrector (Cbem), lSIS... S. SWaAJDWn'AIf Exira MiltaDt DIrector ( Clem ), lSI

Oils and Fats Subcommittee, CAFDe 5 : 1

CttIIIIIM'DR G. S. HATTlAIfODI HlDdllltaD Lever Ltd, Bombay

MlIII1IIn81m G. M. Jou.u ( A"",.,. to

Dr G. S. Hattiaqdi)Da K. J. B.u.AuDHlCAif M1DJItry or Defence ( R I: D)

SID! K. J(. GAlfOVLY ( AltIrMtI)SHaI N.1bIowMm DeveIoPmeDt Wine. Miniltry or Commerce I:

IDClUItry8HaIN. DumAClRAa The Ta.. 011 MilIa 00 Ltd, Bombay

Da D.G. GUM" ( ..clImtc,,)SBasS. C. GBoa IDdiaD bp and Toiletria Maken' A.odatiOD,

CalcuttaSBaJ R. It. M.wz Dlrectonte of Marketillf I: IaapectiOD (Minlatry of

food I: ARriculture)S.... B. S. MODI The Vuupati MaDuCacturen' AIIoc:IatioD of IDdia,

BombayBRa.011 Pa.u.uH Harcourt Butler TechDo1ollcailmtitute, KaDpurD. S. P. PATJLu: 8eDaru Hindu University, VaraDUis••• H. R. R.A,JA BombayOilleedll: Olla ExchaDlC Ltd, Bomba,

SID! ClwtAIfDAI V. MAanvALA(.411mtM1 )

2

Page 7: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

AMENDMENT NO. 2 FEBRUARY 1976

TO

IS : 1676-1960 SPECIFICATION FOROLEIC ACID, TECHNICAL

Through I his amendment a requirement and mot hod of test fi)J"fluxing property of the material is being included in this standard 011 arequest from the Ministry of Defence, GovclnmC'nt of India. Theamended standard, therefore, achieves fnll alignrnpnt with JSS: 1076Oleic acid, commercial (flux soldering) of Ministry of Defence.

Alteration

[Pa.~e 4 (jJoge 5 of the reprint), Table I, clause rrfn ence under the title ojthe tableJ- Substitute ' ( Clauses 4.3 and 5.1 )' for' ( Clauses 4.2 and :1.1 ) '.

Addenda

I Page 3 (page 4 of the reJlrint), clause 4.1.1] - Add the following newclause after 4.1.1 and re-number the existing clause' 4.2' as ' 4.3 ':

'4.2 Fluxing Property - The material, when intended for Defence use,shall also pass the test prescribed in Appendix C. '

(I'age 12, clause B-3.2.3) - Add the following new appendixafter B-3.2.3:

APPENDIX C( Clause 4.2 )

TEST FOR FLUXING PROPERTY

c-r. OUTLINE OF THE METHOD

C-I.I Material is applied to two properly cleaned test plates by hrushand plates are put one over the other and soldered with solderingmaterials. The plates are then examined for any detachment.

C-2. MATERIALS

C-2.1 Tin Plates-two of 10 X 2'5 ern size.

C-2.2 Solvents - suitable, like acetone, carbon tetrachloride or toluene.

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0.2.3 Solder Gan

C-2.4 Soldering Materials-suitable.

0.3. PROCEDURE

c-3.1 Take the tin plates and polish them with emery paper. De-greasethem with a suitable solvent and finally clean with dry cloth.

C-3.2 Apply oleic acid by brush on the part of the surface of the platesto be soldered. Put the soldering material Oll the portion to be solderedand spray it by red hot solder gun. Put the plates one over the other andallow the soldered plates to cool for 2 to 3 minutes. The soldered portionshall not get detached under normal stress.

C-3.3 The test shall be taken as satisfactory if the plates do not getseparated easily when tried to break off the soldered joint.

(CAFDC 5)

2

Reprography Unit. 815, New Delhi, India

Page 9: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

18 I 1676 • 1960

Indian StandardSPECIFICATION FOR

OLEIC ACID, TECHNICAL

o. FOR E W 0 R D

0.1 This Indian Standard was adopted by the Indian Standards Institutionon 4 July 1960, after the draft finalized by the Oils, Fats and SoapsSectional Committee had been approved by the Chemical DivisionCouncil and the Agricultural and Food Products Division Council.0.2 Oleic acid is used in India in the manufacture of various products,such as lubricants, carbon paper, stencil paper, paints, cosmetics, liquidsoaps, disinfectants, textile finishing preparations, printing inks, pharma­ceuticals, metal polishes, etc. Although there are many commercialspecifications drawn up by individual manufacturers which relate todifferent grades of oleic acid, these have no official recognition and nostandard has yet been formulated for this material by any country. Inpreparing this standard, due consideration has been given to the differentgrades of oleic acid being used at present for various purposes.0.3 Taking into consideration the views of producers, consumers andtechnologists, the Sectional Committee responsible for the preparation ofthis standard felt that it should be related to the manufacturing, tradeand technological procedures followed in the country in this field.0.4 In the preparation of this standard, substantial aasistance has beenderived from the valuable data made available by various organizationsin this country, notably Calcutta Chemical Co Ltd, Calcutta; GodrejSoaps Private Ltd, Bombay; Hindustan Lever Ltd, Bombay; ModiVana.tpati Manufacturing Co Ltd, Modinagarj Navsari Oil Products Ltd,Naveari; and Standard-Vacuum Oil Compan~ Ltd, Bombay. Thefollowing publications were also referred to:

British Pharmacopoeia, 1958United States Pharmacopoeia, 1955

0.5 Indian Standard Methods of Sampling and Test for Vegetable Oilsand Fag (IS: 548-1954-) is a necessary adjunct to this standard. Besides,thiJ .tandard requires reference to IS: l07{).1960 Specification for Water,Distilled Quality ( Rlvisld).

0.5.1 Wherever a reference to apy Indian Standard mentioned in 0.5 orotherwise appean in this standard, it shall be taken as a reference to thelatest venion of the standard•

• SiDce reviled.

3

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IS I 1676 • 1960

0.6 For the purpose of deciding whether a particular requirement of thisItandard is complied with, the final value, observed or calculated, expres­sing the result of a test or analysis, shall be rounded off in accordanee withIS: 2-1960 Rules for Rounding Off Numerical Values ( Reuis,d). Thenumber of significant places retained in the rounded oft'value should be thesame as that of the specified value in this standard.

0.7 This standard is intended chie8y to cover the technical provisionsrelating to the material, and it does not include all the necessary provisionsof a contract.

I. SCOPE1.1 This standard prescribes the requirements and the methods of test foroleic acid, "technical.

2. GRADES

2.1 The material shall be of three grades, namely, Grade 1, Grade 2 andGrade 3.

2.1.1 Grade 1 is recommended for UK in the manufacture of COIrneticl.

3. SAMPLING

3.1 Representative lam pies of the material Ihall be drawn as prescribed inAppendix A.

f. REQ.UIREMENTS•

f.1 D••crlptloa - Oleic acid, technical, Ihall be the product obtainedby the hydrolysis of fats or fixed oils and the subsequent separation of theliquid fatty adds. It shall be clear and free from adulterants, lediment,IUlpended and other foreign matter.

f.l.1 The clarity of the material shall be judged by the absence ofturbidity after keeping the sample at 27° ± 2°0 for 24- houn.

f.2 The material shall also comply with the requirements given in Table I.

5. TESTS

5.1 Testl shall be carried out by methods prescribed in col 6 and 7 ofTable 1.

6. PACKING AND MAltKlNG

6.1 The material Ihall be lupplied in suitable containers, u agreedbetween the purchaser and the lupplier.

Page 11: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

1111678·1_

MaTaoD cw TIlT,a.. TO CLNo. III.....

T4IIL& I UQVIIlCNINTI lOa OUIC ACID, TICIINICW.(a-of.2.-J5.1)

~JlOa~~

Grade 1 Grade 2 Grade 5

.. 6 890 to 95 85 to 95 85 to 95

NU NU Nil0·1 0·1 0·25

BolBo2

(7)

7

12

6IS

..14

loS21

(5)

0·25IlK

(of)

0·25197

(2)

1·0 1·515 20

1500 Y+ 10'0Y1;.1·5R.1D 200R.'rID eeU I·bacell

.Por caaetIc weDO ....... Uaak Ie pcwerlbecl.tSlace,......

I) (2)

i) Mo1ttute, percent by wel,ht,M..

Ii) R,pooificadOll value, M.W) Acid value .hall DOt differ

fromaaponjficadOll value bymore thaD

Iodine valueNiDeral acidityAih, percent by welsht, M.U...ponliable ..tter, per-

ceIl& by welPt, M.Poq, point ro), MelColour I'I~ CIQ .... Loft·

boDcI""lI..

Iv)v)

vi)YO)

vW)Is)

• .2 The contaiDen lhaU be lClCureIy clOMd ud legibly and indeliblymarked w1th the foUowiag lnI'ormadoa:

a) Maautae:turer'. name;b) RecopiIed trad~mark, ifany;c) Name and ....de of the material.d) Wdaht of the material in the containerie) Monthand yearotthe manufacture; andr) Batch Dumber In code or otberwile to enable the lot of manu­

faet\11'e to be need back&om recorda.'.2.1 The COGtalaen may alto be marked with StaD~.rd mark.

1.1.2 TIle UIC of tbe StiDdard Mlrk I. 80vered by 1be provisions of tbeBurtlll of laelllDStladuds Act. 1986 lad tbe Rules Ind Regulilions madelberea.r. ne detans of conditlona under wbicb Ibe licence for Ibe.use ofSliadard Mark may be pRIed to mlnuflcturera or produced may be obtainedflOa die Ba... of IDdlia StiDd,...

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••117.·1_

A-3.~ ••t ..... lam'"-The third set of the teat aamplea, bearinl theseals 0( the purchuer and the IUpplier, aball constitute the rd'eree umpleand lhall be used in cueordisputebetween the purchaserand the luppher.It shall be keptat a placeIIreed to between the purcbuer and the lupplier.

A-4. NUMBER or '!'UnAo4.1 The tcst for aaponification value, acid value and pour point (",Table I) lhall be carried out on each individualsample Ofthe let of tCitsamplcs (," A-3.3 ).

A-4.2 The tcst. (or the remainingcharacterietiCi given in Table I .haU becarried out on the compolite IalDple 0( the let of telt IUDpIeI ( '" A-3.3).

A-5. ClUTB8JON fOR CONrOUOTY

A-5.1 A lot ,haJI be considered u conforming to this .pecification it itsatisfies the criteria in A-5.2.1 and A-5.3 for the characteristics given inTable I.

A-.5.2 The teat reaultl (or sapoDifieation value. acid value and pour pointshall be recorded u abown In Table III. The mean andthc range ahallbe c:aJculated u foUows ud ahaU be recorded in col • aad 5 reapecdveJrotTable III:

Mean (x) - ThN:tr;:.~r:z:tIRanI" CR) - The dift'erenoe between the mulmum and the minimum

valuel of the telt reaulu

4-5.2.1 The corrected mean u shOWD in col 6 or T.ble III shaJJ becalculated. The lot ,hall be considered to have satisfied the requirementfor a characteristicif the conditiongiven in col 7 ofTabJe III it aadlfied.

TAaU ID QUTDJON lOa CONrOalOTY

(ClaIR A-5.2"A-!.2.1)

8.. ClaAuoruIma T... Ra1rLft WIWI ItAIIaa OoUllClTlD Cam_lOlINo. J,2, S... WaAII 00IIf0ugry

(J) (2) (3) (t) (5) (6) (7)

I) Sapoalficadoa value i l R. il-4·6RI Correctedmean~=ed valuelaable I (it)iI) Add value i l Its ir-4·6Ra Corrected mean~= valuelaable I (Ill)W) Pourpobac it .. i,+O·6R. Come:ted mean s::f::l8ed valueiD

able I (vW)

8

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18 I 1676. 1960

A-5.3 The composite sample when tested for the remaining characteristicsnot tested in A-5.2 shall satisfy the corresponding requirements for themal specified in Table I.

APPENDIX B

( Table I)

TEITS FOR MINEIlAL ACIDITY. ASH AND POURPOINT

8-1. TEST FOR MINElUL ACIDITY

8-1.1 ~aUty of R••,ent. - Unless specified otherwise, pure chemicaltand distilled water (s" IS: 1070.1960) shall be employed In telts.

Non - • Pure chemicals' shall mean chemicals that do not contain impurities whichaffect the resultl or analysil.

8-1.2 "alent. - The following reagents are required.

8-1.2.1 Mdllyl Oranl' Indicator - 0'05 percent (wID) soludon.

8-1.2.2 Ligllt P,trollUm Et1llr ( 600/800e ).8-1.3 Proceclare - Mealure 10 ml of the melted sample into a separatingfunnel and Ihake intimately with three auceessive 10 ml portions of hotwater. The temperature of the hot water should be more than the meltingpoint of oleic aeid, Combine the aqueous extracts. transfer to anotherseparating funnel and remove traces of fatty acids in the water by extractionWlth light petroleum ether. Test the aqueoul extract 10 obtained with afew drops of methyl orange indicator.

8-1 •• The matcrialshall be taken to have utilBed the requirements of theteat if the indicator does not show acid reaction.

8-2. DETBRMINATION OF AlH

8-2.1 Appanta.

"2.1.1 PliUimufI Crwi6l1

"2.1.2 D,siualor-containilll an eftieicnt desiccant. IUch .1 fuaedcalc:lum chloride.

8-2.2 Proceda... - Weigh accurately about 10 g ofthe air-dried materialinto a platinum crucible which baa been previously dried, COQIed in thedcaiccator and weighed. Heat the crucible over a low flame and ignite the

9

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l20mm5°C from -35°e100e from _30°CTo allQw heating toPlain±0'5°Q

U I 1676.1960

contents gently. Incinerate the residue in a muffle furnace at 550° ± 100euntil free from carbon. Cool the crucible in a desiccator and weigh.Repeat the above procedure of heatin$" cooling and weighing until thedifference between two successive weighmgs does not exceed I mg.

"2.3 CaleuladoD

. 100 wAsh, percent by weight - -w

where

w - weight in g of the ash, andW - weight in g of the material taken for the tes~.

8-3. DETERMINATION OF POUR POINT·

11-3.1 Appant1l. - The apparatus consisting of the following partsassembled al shown in Fig. 1 shall be used.

11-3.1.1 Jar A - of clear glall, cylindrical form with a flat bottom,1I~ to 125 mm high and 30 to 33'5 mm inside diameter fitted with acork C bored centrally to carry the thermometer B.

11-3.1.2 ThmMrruter Bt - conforming to the following requirements:

Range - 38°e to +50°0Graduation 1°CImmenion 108 mmOverall length 225 ± 10 mmStem diameter 5'5 to 8'0 mmBulb shape CylindricalBulb length 7 to 11) mmBulb diameter Not greater than stemLength of graduated portion 65 to 805 romDistance between bottom of bulb

to - 38°e mark, MinLonger lines at eachFigured at eachExpansion chamberTop finishScale error not to exceed

-The method ia hued on • J 10 Cloud Point aDd Pour Point ,iven in IS: 1448(Part I )01960 with luitable modification.

tMercury-ln o , "" type.thermometer with INtitute of Petroleum delirnalion IP 10CODtOl'Dll to th_ requiremen1l.

10

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11,1671·1_

All dimenaiona in millimetrea.

Fro. 1 ApPARATUS FOR THB DETERMINATION 01' Pou. PODn'

B-3.1.' Jadut D - of gl... or metal, water-tight, cylindrical in form,Sat-bottom, about 115 mm in depth with inside diameter 9'5 to 12'5 nungreater than the outside diameter of the jar A. A dilc of cork or felt E,6 mID thick, fits snugly in the bottom of the jacket.

"".1.~ Otuk" F - in the shape of a ri~about 5 mm thick fittingsnugly round thejar A and loosely inside the acket D. It may be made ofcork, felt, or any other suitable material tic enough to clint to thejar A and hard enough to hold ill shape. The gullet prevents the Jar fromtouching the jacket.

11

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For Temperature Down to

JOOC

-12°C-25°C-55°C

IS I 1676• 1960

8-3.1.5 Bath G - of any size and shape convenient for obtaining therequired temperature, and equipped with a support which will holdjacket D firmly in a vertical position.

8-3.1.5.1 It is convenient to have two or more baths available whendetermining pour points below 10°C.

8-3.1.5.2 The bath liquid may be maintained at the requiredtemperature by refrigeration, if available, taking care to avoid disturbanceof the bath liquid and also avoiding direct contact of any immersed coolingcoil. with the jacket. Alternatively, one of the following freezing mixturesmay be used in the bath;

Free,ting Mixture

Crushed ice and waterCrushed ice and sodium chlorideCrushed ice and calcium chloride crystalsSolid carbon dioxide and acetone

8-3.2 Procedure

8-3.2.1 Pour the material, heated in a water-bath, if necessary, into thejar to a height of 51 to 57 mm (see 8-3.2.1.1). Close the jar with the corkcarrying the thermometer so that the thermometer bulb is immersed verti­cally in the material with the beginning of the capillary 3 mm below thesurface. Heat the material, without stirring, to a temperature of 4Goe ina bath maintained at a temperature not higher than 48°C. Cool the sampleto 32°C in air or in a water-bath at approximately 25°C. Fit the gasketon to the jar 25 mm from the bottom and insert the jar into the jacket.The disc, the gasket and the jacket shall be kept clean and dry.

8-3.2.1.1 The jar may be marked to indicate the proper level of thesample.

8-3.2.2 Once the material has cooled enough to allow the formation ofwax crystals, take great care not to disturb the mass of sample nor to permitthe thermometer to shift in the sample. Any disturbance of the spongynetwork of crystals will lead to false results.

8-3.2.3 Maintain the bath temperature of the cooling bath at minus1° to plus 12°C. Support the jacket and jar in a vertical position in thebath 110 that not more than 25 rom projects from the cooling medium.Beginning at a temperature 12°C before the expected pour point, at eachthermometer reading which is a multiple of 3°C, remove the jar from thejacket carefully and tilt it just enough to ascertain whether there is a move­ment of the material, and replace it; this complete operation, removal andreplacement should take not more than three seconds. Take care not todisturb the mass of the liquid nor to permit the thermometer to shift in

12

Page 17: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

IS I 1676- 1960

the liquid. If the material has not ceased to flow when it has been cooledto goe, place the jar and jacket in another bath maintained at a tempera­ture of minus 15° to minus 18°C. If the material has not ceased to Bowwhen it has been cooled to 6°C, place the jacket and jar in another bathmaintained at a temperature of minus 32° to minus 35°0. As soon as thematerial ceases to flow when the jar is tilted, hold the jar in a horizontalposition for exactly 5 seconds. If the sample shows any movement, replacethe jar in the jacket and cool the material another 3°C. If the materialshows no movement during the 5 seconds, record the reading of thethermometer. Take the pour point as the temperature 3°C above thistemperature.

13

Page 18: IS 1676 (1960): Oleic Acid, Technical - Public.Resource.Org · IS,1676• 1960 Indian Standard \ Reamr-d199% ) SPECIFICATION FOR OLEIC ACID, TECHNICAL Oils. Fats and Soaps Sectional

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