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 4472-2 (1968): Methods for identification of applicationclasses of dyes on textile materials part-II Wool, silkand other protein fibres [TXD 7: Textile Sizing andFinishing Materials]

IS:4472 (Part II)-1968

Indian Standard METHODS FOR

IDENTIFICATION OF APPLICATION CLASSES OF DYES ON TEXTILE MATERIALS

PART II WOOL, SILK AND OTHER PROTEIN FIBRES

I)yestuffs Sectional Committee, TDC 38

ChUiWMtl ReprcSenting

SWRI B. V. SEAR The Atul Products Limited, Atul

Melltbers

DR H. KAIWAR ( Altmafe to Shri B. V. Shah )

SRRI C. R. ASNANI The Century Spg & Mfg Go Ltd, Bombay SERX D. R. SHARMA ( Al&mu&)

SARI H. P. BHATTACHARYA Indian Jute Industries’ Research Association, Calcutta SHRI K. S. BHUJAN~ Gflice of the Textile Commissioner, Bombay DR S. CAATTERJEE SHRI D. S. DALAL

Suhrid Geigy Trading Limited, Bombay Chika Limited, Bombay

SHRI T. S. SAMBASIVAN ( Alfcrnafe ) SHRI R. C. DASWPTA National Teat House, Calcutta SHRI N. H. DESAI Ahmedabad Textile Industry’s Research Association,

Ahmedabad DR R. D. DES~I M. G. Science Institute, Ahmcdabad SHRI V. K. DIRSEIT Indian Dyestuff Industries Ltd, Bombay

SHRI S. G. PARULHAR ( Altrmofe ) SHRI S. K. DUTTA The Ahmedabad Manufacturing and Calico Printing

Co Ltd, Ahmedabad SHRI JOCINDER SIN~H Directorate General of Technical Development, New

Delhi SERI K. G. KAPADIA Fcdco Private Limited, Bombay SHRI H. C. KHATIWALA Arlabs Limited. Bombay DR C. B. KOTRARI The Textile Association ( India ) Regd, .4hmedabad

SHRI T. A. SCBRAMANYAM ( Memate ) SHRI G. A. KULKARNI Amar Dye-Chem Ltd, Bombay

SHRI S. V. DESAI ( Alkrnak ) SHRI S. S. MEHTA I. C. I. ( India ) Private Limited, Calcutta

SHRI Y. H. DESAI ( Alkrnok ) DR S. H. MHATRE The Bangalore Woolien, Cotton & Silk Mills Co Ltd,

Bangalore, and the Buckingham & Camatic Company Limited, Madras

SHRI R. RAMAKRIS~NAX ( Ahmute ) SHRI P. S. NADKARNI Ministry of Defence ( DGI ) DR M. V. NI~KAR The Millowners Association, Bombay

( Continued on page 2 )

INDIAN STANDARDS INSTITUTION MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARC

NEW DELHI

IS : 4472 ( Part II ) - 1968

hlembnr Representing

DR J. .\I. R.4EE Hickson & Dada,jee Ltd, Bombay SHRI II. V. DHARWARKAR ( .4lfemate )

SHRI M. S. R.&o The Indian Paint Association, Calcutta SHRI N. S. BHARTIA ( AllrrnaC j

SHRI SANTOPH SINQH National Chemical Industries, New Delhi SHRI N. S. SARAIY.4 The Bombay Textiie Research Association, Bombay SHRI K. A. SHAH The Sarangpur Cotton Manufacturing Co Ltd,

Ahmedabad SHR1 K. v. StiENOY Ciba of India Limited, Bombay

SHRI T. SUASIVAE ( .&temate ) DR S. 0. SHUKLA Rohtas Industries Limited, Dalmianagar DR M. K. UNNI Xational Chemical Laboratory ( CSIR ), Poona SHRI S. M. CHAKBABORTY, Director General, IS1 ( Ex-ojicio Member )

Director ( Tex )

SHAI G. S. ABRYAXKaR

Deputy Director (Tex ), IS1

Identification of Dyes Subcommittee, TDC 38 : 1

Conmzer

SKRI N. H. DEW Abmedabad Textile Industry’s Research Association, Ahmedabad

h&nbns

Dx N. F. D~a.41 DR C. B. KOTHARI SHKI N. S. SARAIYA DR R. \‘. R. SUBHAUNIAN

Sandoz ( India ) Limited, Bombay The Textile Association ( India ) Regd, Ahmedabad The Bombay Textile Research Association, Bombay The BSiEba: Art Silk Mills Research Association,

o

2

IS:4472 (Part II)-1968

Indian Standard METHODS FOR

IDENTIFICATION OF APPLICATION CLASSES OF DYES ON TEXTiLE MATERIALS

PART II WOOL, SILK AND OTHER PROTEIN FIBRES

0. F 0 R E M’ 0 R D

0.1 This Indian standard (Part II j was adopted by the Indian Standards Institution on 30 December 1968, after the draft finalized by the Dyestuffs Sectional Committee had been approved by the Textile Division Council.

0.2 The methods of identification of dyes on wool, silk and other protein fibres prescribed in this standard. are simple and are meant for rapid identi- fication ofapplication classes of dyes. Successful identification ofapplication classes of dyes depends on experience and familiarity of the dyestuffs. The knowledge of a fibre eliminates dves which are not applicable to the parti- cular fibre and the identification is made somewhat easier.

0.3 The methods prescribed here do not involve the use of microscope, however, its use is not precluded if desired. In general, the identification of application classes of dyes is not dependent on any single test and final confirmation of the identity of an unknown class of dye should preferably be made by comparison Lvith an authentic sample.

0.4 Considerable assistance has been derived from the following:

ELLIS CLAYTON. Identification of dyes on textile fibres. 1963. Ed 2. The Society of Dyers and Colourists, Bradford, CK.

KOCH ( P ). Microscopic and chemical testing of textiles. 1963. Chap- man and Hall Ltd, London.

Identification of dyestuffs on textiles. Textile Industries Journal 122, 1; 1938: 101-104.

1. SCOPE

1.1 This standard ( Part II j prescribes methods for identification of appli- cation classes of dyestuff on wool, silk and other protein fibres.

3

qJ!qM say!mdux! nyuo3 IOU op vq?yl s[rm!,!uraq> weam [yzqs ‘ spn!uiaq3 arnd , - azo_xI

.papuaiu! sj auaSea3 sa ~338~ JO asn aq3 alaqrn pasn aq 11eps ( &xj1_0~01 : SI 13s) mim pallys!p pue sasal u! pa@duIa aq IIW slm!waqs amd ‘aywaqio pagaads ssalun-sw&kp JO &g81@ w$

-paqseht pue sainuyw: (; JoJ l!oq le ppv 3!Jolq3olpxy luamad 1 ql!~ a+%) paleall aq ppIo$ a$ues aql ‘salyxal u! 1uasaJd ‘SUB ~1 %~e+mxu ihysp_n~ ahouxa OJ, g-z

*aIdums aql JO suoymd palno[oJ luaia~~!p

UOJJ Uaq8l q p[nOqS CUaUI!jadS aql ‘SD!Jq8J payzd pm padp~o x83111-Z 3ZON

*&mmdas payyap! w plnoqs UJd Uo UnolO> lUaJa&!p Jql ‘3!lql?l UaAOM paJno[oa-_!jInur JO SSe3 UI - ( a&ON

.aaa!d isai um E x g o aqm byqvj s! Isal sapun aIdwt?s aql JI L’;G

+3ua[ u! u13 6 inoqe JO u& JO a.‘gy JO ayu I? a?ea ‘uml( .xo aaqy s! isal lapun aIdrues aql JI 1-z

N3WICKIdS IS3.L d0 NOLLVlIVdXtld ‘t

*salqy u!alo.xd Jaq,o pua qI!s ‘100~ Suyuyd pue But -al(p JOJ pasn XIIWJJJOU sadpjo sadlil 01 aIqezIdd= aJe spoylaux aq~ 1.1’1

896K-(Xl wxd) ZLW:SI

.au!~a~d[% UT p!3e cya3e e.xmi auyrue!paualSy3a JO 11~s umpos!p JO uo!ln~os ( n/m ) IuaaJad + - nofqos anf.‘a3&) - vL<13 61’~

‘3ia3vM 30 1u.1 ooz y alelam umpos sno.lpl(rjue jo 8 01 pue py yuuel JO 8 01 %.+~oss~p I(q pa.mdaJd- ~uaa%a~ o~mrt~, 91-g

.( WC I 01 ,ZS 1 ‘d’q ) paaewxa~uo~ (q) put? ‘( ,7/m ) luaa.rad 0s (E) - appznx~~.xt.~~ ~Xq~auqa ~1-g

(P=kP’Vl) I”OM P=no=S 91%

=ouw P*v=wI SIT

As in the Original Standard, this Page is Intentionally Left Blank

IS:4472 (PartI.!)-X96E

I

i- /c :_

APPENDIX A ( Clause 4.1 )

TESTS FOR IDENTIFICATION OF APPLICATION CLASSES OF DYES ON WOOL, SILK AND OTHER PROTEIN FIBRES

The rest specimen is successively treated with (a) 50 percent dimcthylformamide, (b) concentrated dimcth+xmamide, and (c) a mixture of glacial acetic acid and rrctitird spirit ( 1 : 1, v/v ) at boil for 3 to 4 minutes with intermediate washing with water and squeezing.

---

I If dyes of group I are absent, treat the test specimen with Wl ml of glacial acetic acid and warm. Add 5 ml of' water.

______

I ’ If dyes of groups I and II arc absent, take a fresh test specimen and add to it 5 to 10 ml of 1 percent ammonium hydroxide solution.

/ specimen and divide the extract into tyo portions. If extract is coloured, remove the stripped

(a) Add to the first portion 30 mg of sodium chloride and 10 to 30 mg each of bleached cotton and secured wool, and / boil. (b) Seutmli_re the other portion by adding 10 percent sulphuric acid and few drops in excess. Add bleached cotton and secured wool and boil.

/ If dyes of groups I. II and III arc absent, take a test specimen ( about 5 g ) and ash it completely in a porcelain crucible. sodium carbonate and sodium nitrate ) and fuse.

Add 200 mg of flux ( equal parts of

ii Test for the Presence of Metal

If dyes of groups I to IV are absent, take a test specimen ( about 200 to 300 mg ) and add 2.5 ml of 10 percent sodium hydroxide and boil until it is dissolvrd. Add 25 to 30 mg ofsodium hydrosulphitc, 20 to 50 mg of sodium chloride and 10 to 15 mg of bleached cotton. Keep near boil for 2 minutes and cool. Take out the corton and place it on filter paper for 1 to 2 minutes and oxidize with sodium nitrate and acetic acid solution.

E-‘C’B .I y a O 0 ::*

Strip the dye in hot 1 percent $ ZN.?

g

4.E ;: M- F

ammonium hydroxide. After 2 E B

cooling acidify the solution with 2 x c * ‘C ‘Z a

hydrochloric acid. Shake up &,c E L-.

- .E v the extract with ether 2 2 ,oz-,

ii I2

. .= 0 g .“, 2

z

-$ m,f ‘- $

Y

L 0

Ether is not hcUv’ -o”C x> u

P 2-0 N

.n 6 -? ‘- = A <

El- .E

E-” r u E c:

g. c: c

,o Glk 9 e <- I

L 3 P’ / -- ..-

;ROf_IP I /GROUP II’ GROUP II1 GROUP IV GROUP V I /

ADDITIONAL TESTS

1: Basic Dye

i) Take a test specimen. .4dd to it I ml of glacial acetic acid and warm. Add 5 ml of water. To the extract add tannin reagent. A coloured precipitate is obtained.

ii) Take a test specimen. boil i: with rectified spirit; a coloured extract is obtamed.

~ii) Take a test specimen, boil it in 2 ml glacial acetic acid, Acidify the solution with 5 prcent acetic acid.

A.dd 30 percent sodium hydroxide till the solution is alkaline. The original colour is restored.

A change in colour or complete decolourization is obtained.

7

8

W61-(II=W)?2W$S1