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है”ह”ह

IS 11660 (1986): Method for quantitative estimation ofcationic dye-fixing agents [TXD 7: Textile Sizing andFinishing Materials]

IS : 11660 - 1986

Indian Standard METHOD FOR

QUANTITATIVE ESTIMATION OF CATIONIC DYE-FIXING AGENTS

Dyestuffs Sectional Committee, TDC 38

Chairman Representing

SHRIS.G. PARULEAR Indian Dyestuff Industries Ltd, Bombay

Members Srrar B. M. Nnnr I Alternate to ___._ ~. _ ~. ~~~ \ __

Shri S. G. Parulkar ) DR V. G. AQNIHOTRI SHRI M. R. BHATT

National Peroxide Ltd, Bombay Atul Products Limited, Atul

SHRI J. Y. ACHAREKAR ( Alternate ) DR H. P. BHATTACHARYA National Textile Corporation Ltd, New Delhi

SHRI P. P. CHECKER ( Alternate ) DR ( KUMARI ) M. D. BHAVSAR Silk & Art Silk Mills’ Research Association, Bombay DR D. K. DAS National Test House, Calcutta SHRI N. H. DESAI Ahmedabad Textile Industry’s Research Association, __~_~ _~.

Ahmedabad DR M. M. DESF~PANDE SG Chemicals and Dyes Trading Limited, Bombay

SRRI P. A. K. NAIR ( Alternate ) SERI K. S. DESIKAN Office of the Textile Commissioner, Bombay

SERI PAUL LINC+DOH ( Alternate ) SHRI P. K. KAMATH Crescent Dyes & Chemicals Ltd, Calcutta

SRRI Y. R. MEHTA ( Alternate ) SHRI N. KASTURIA Ministry of Defence ( R & D )

SHRI RAJENDRA SIN~H ( Alternate ) SHRI K. V. KRISHNAN Colour-&em Limited, Bombay

SHRI S. R. RAJA~OPALAN ( Alternats ) DR G. G KULKARNI Chika Limited, Bombay

SHRI V. G. SAL~NEHE ( Alternate ) DR B. MAAAPATRO Bombay Millowners’ Association, Bombay SHRI A. K. MANDAL Directorate General of Technical Development,

New Delhi SHRJ D. G. SONI ( Alternate )

DR B. M. PATEL Dyestuffs Manufacturers’ Association of India, Bombay

DE ( SHRIMATI) S. S. PATNARDHAN Wool Research Association, Bombay SHRI S. RAJA~OPALAN Ciba-Geigy of Indirr Ltd, Bombay

SHRI D. K. MURTRY ( Alternate )

( Continued on page 2 )

I

@ Copyright 1986

INDIAN STANDARDS INSTITUTION I This publication is protected under the Indiaa Copvright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the Dub&her shall be deemed to be an infringement of copyright under the said Act.

IS : 11660 - 1986

( Continued from page 1 )

Members Representing

SHRI A. V. RAI\~AMURTHY Development Commissioner of Handlooms, New Delhi

REPRESENTATIVE Saranpur Cotton Manufacturing Co Ltd, Ahmadabad SHRI K. S. RINDANI Sandoz ( India ) Ltd, Bombay

SHRI V. S. ANGADI ( Alternate ) SHRI S. R. ANANT~ARRISHNA Binny Limited, Madras

SETTY SRRI A. J. KADAVAN ( Alternate )

SRRI H. A. SH~R Century Spg & Mfg Co Ltd, Bombay SHRI MAHESH SH~RMA ( Alternate )

SHRI H. A. SHAH Textile Association ( India ) Regd, Bombay SKRI N. S. SARAIYA ( Alternate )

SHRI K. G. SHAH Ahmadabad Manufacturing and Calico Printing Co Ltd, Ahmadabad

SHRI J. I. SETALWADI ( Alternate ) SHRI D. K. SINHA Bombay Textile Research Association, Bombay

SHRI S. VARDAIZAJAN ( Alternate ) SHRI N. c. SOM Indian Jute Industries’ Research Association,

Calcutta SHRI D. K. SRIVASTAVA Ministry of Defence ( DGI )

SHRI A. N. MUSHRAM ( Alternate ) SRRI D. R. TENDUL~AR Amar Dye-Chem Limited, Bombay SHRI R. I. MIDHA, Director General. IS1 ( Ex-ojicio Member )

Director ( Tex )

Secrelary

SRRI M. S. VRRNA Assistant Director ( Tex ), IS1

Cationic Dyes Subcommittee, TDC 38 : 5

Convener

SERI G. G. KULJ~ARN~

Members

Chika Limited, Eombay

SHRI S. T. CHARI ( Alternate to Dr G. G. Kulkarni )

DR P. B. BARAT Sahyadri Dyestuffs & Chemicals, Pune SHRI M. R. BHAFT Atul Products Limited, Atul

SHRI K. B. SHAH ( Alternate ) SERI H. R. HEERA Pigments & Dyestuffs (P) Ltd, gombay SHRI G. A. KULKA~NI Amar Dye-Chem Limited, Bombay SHRI K. MADHAVAN Indian Petrochemicals Cornoration Ltd. Vadodara SHRI A. K. MANDAL Directorate General of ‘Technical Development,

New Delhi SHRI D. G. SONI ( Alternate )

( Continued on page 7 )

2

I

IS:11660-1986

Indian Standard METHOD FOR

QUANTITATIVE ESTIMATION OF CATIONIC DYE-FIXING AGENTS

0. FOREWORD

0.1 This Indian Standard was adopted by the Indian Standards Institution on 30 April 1986, after the draft finalized by the Dyestuffs Sectional Committee had been approved by the Textile Division Council.

0.2 Cationic dye-fixing agents are used for after-treatment of direct or reactive dyeings to minimize the bleeding trouble. Many such agents available in the market are of different chemical nature and may vary in active matter content. Assessment of active matter content is important to the manufacturer to standardize the product batches as well as to the user to evaluate cost/benefit ratio.

0.3 A number of methods are available for determining the active matter content. However the method suggested should neither be too complicated nor be unsuitable for cationic compounds under consideration. Deter- mination of solid content is not always a valid indication of active matter content as it can be adjusted by adding some other inactive, cheaper and compatible ingradient.

0.4 The method prescribed in this standard is based on titration of known volume of direct dye solution ( Congo Red ) against solution of the agent and comparing it with titration of cetrimide solution as a standard solution. The method is useful in estimating accurately the extent of absorption of dye-fixing agents by cotton under different conditions.

0.5 In reporting the results of a test or analysis made in accordance with this standard, if the final value, observed or calculated, is to be rounded off, it shall be done in accordance with IS : 2-1960”.

*Rules for rounding off numerical values ( revised ).

3

IS : 1166e - 1986

1. SCOPE

1.1 ‘This standard prescribes a simple method for comparative estimation of active matter content of cationic dye-fixing agents. Lowest concentra- tion of a commercial sample which can be estimated by this method is 0.2 ml/l.

2. PRINCIPLE

2.2 A known volume of dye ( Congo Red ) solution is titerated against the solution of cationic dye-fixing agent, the end point being indicated by complete precipitation of the dye. The volume of agent thus required is compared with that for a solution of known strength of standard solution of Cetrimide. Results are expressed as equivalent of cetrimide in the stock solution of the dye-fixing agent under test.

3. STANDARD AGENT SOLUTION

3.1 For the purpose of comparative estimation of dye-fixing agent under test, a standard solution ( 4g/litre ) of cetrimide prepared by dissolving by 4 g of cetrimide ( 100 percent solid content ) in 1 000 ml of distilled water, sha.11 be used.

4. APPARATUS

4.1 Titration Flask - 100 ml capacity

4.2 Graduated Burette - with an accuracy of 0.1 ml.

4.3 Pi.pette - 20 ml capacity.

4.4 Weighing Balance - with an accuracy of 1 mg.

4.5 Whatman Filter Paper No. 41 or its Equivalent

4.6 Glass Rod - for spotting and stirring purposes.

5. REAGENTS

5.1 Quality of Reagents - Unless otherwise specified, pure chemicals shall be employed in tests and distilled water shall be used where the use of water as reagent is intended ( see IS : 1070-1977” ).

NOTE - ‘Pure chemicals’ shall mean chemicals that do not contain impurities which affect the test results.

5.2 Congo Red Direct Dye

5.3 Cetrimide with Known Strength ( Solid Content )

*Specification for water for genera1 laboratory use ( second rcokion ).

4

IS : Z166Q - 1986

6. PROCEDURE

6.1 Prepare 2 g/l Congo Red dye solution by dissolving accurately weighed 2 g dye in 50 ml of water and then making the final volume up to 1 000 ml.

6.2 Prepare 4 ml/litre solution of the cationic dye-fixing agent under test by dissolving 4 ml of stock solution of the agent under test in 50 ml water and making the final volume up to 1 000 ml. Fill this solution in the burrette up to the mark.

6.3 Pipette out 20 ml of Congo Red solution as prepared in 6.k in the titerating flask.

6.4 Titrate the solution of the agent under test as prepared in 6.2 against Congo Red solution ( 6.3 ) till the end point is reached. End point is indicated by complete precipitation of dye present in the flask when by spotting a drop of solution on filter paper, dye appeare as small specks in the spot with no coloured ring around. Note the volume of the solution of the agent under test required to achieve the end point.

6.5 Prepare 4 g/litre solution of standard cetrimide by dissolving x g of it in 50 ml distilled water ( see Note 1 ) and making the final volume up to 1000 ml. Titrate this solution against 2 g/litre Congo Red solution similar to the procedure as given in 6.4 till the end point is reached. Note the volume of 4 g/litre cetrimide solution required to achieve the end point.

NOTE 1 - The value of x can be calculated as follows:

4 x 100 xz -

Y where

Y = solid content of the cetrimide used.

7. CALCULATIONS

7.1 Calculate the active matter content in the stock solution of the cationic dye-fixing agent under test in terms of equivalent of cetrimide by the following formula:

where

c, = active matter content of the stock solutions of the agent under test as equivalent of cetrimide;

Vo = volume of the standard cetrimide solution ( 4gjlitre ) re- quired to achieve the end point; and

T/‘, = volume of the solution ( 4 ml/litre ) of the agent under test required to achieve the end point.

5

IS : 11660 - 1986

8. REPORT

8.1 Report the active matter content in the stock solution of the agent under test in terms of equivalent of cetrimide.

9. SAMPLING

9.1 Lot - All the containers of the same cationic dye fixing agent of same composition delivered to a buyer against one despatch note shall constitute a lot.

9.2 Unless otherwise agreed to between the buyer and the seller, the number of containers to be selected at random from a lot shall be as given below:

Lot Size Sample Size

2 to 15 2

16 ,, 25 3

26 ,, 50 4

51 ,, 100 5

101 ,, 150 6 151 300

301 and )above 7 8

9.3 Stir the contents of the containers as selected in 9.2, thoroughly for not less than five minutes with a clean stick to make them homogeneous. Draw a sample of about 10 g from each selected container in a clean bottle and mix thoroughly. This shall constitute the test sample. The test sample should be stirred again with a clean glass rod before testing.

IS : 11660 - 1986

( Continuedfrom page 2 )

Members Representing

SHRI B. R. NAYAX SHRI S. R. RAJAQOPALAN

Synthetic Interchem Pvt Ltd, Bombay

SHRI R. V. GUPTE ( Alternate ) Colour-them Limited, Bombay

SHRI K. G. SHAH Calico Mills, Ahmadabad DIG J. I. SEETALWAD ( Alternate)

SHRI I<. S. TARAPORWAL.4 Silk & Art Silk Mills’ Research

DR A. VAIDYA J. R$<yt!l%ics Ltd, Kota DIZ K. V. NMZRASIMHAN ( Alternate )

7

INTERNATIONAL SYSTEM OF UNITS ( SI UNITS)

Bane Unit#

QUANTITY

Length

Mass

Time

Electric current

Thermodynamic temperature

Luminous intensity

Amount of substance

Supplementary Unftm

QUANTITY

Plane angle

Solid angle

Derived Unite

QUANTITY

Force

Energy

Power

Flux

Flux density

Frequency

Electric conductance

Electromotive force

Pressure, stress

UNIT

metre

kilogram

second

ampere

kelvin

candela

mole

UNIT

radian

steradian

UNIT

newton

joule

watt

weber

tesla

hertz

siemenr

volt

Pascal

m

kg S

A

K

cd

mol

SYMBOL

rad

sr

SYMBOL

N

J w Wb

T

HZ

S

V

Pa

DEBINITION

1 N = 1 kg.m/s*

1 J = 1 N.m

1 w = 1 J/s

1 Wb = 1 V.s

1 T= 1 Wb/m*

1 Hz = I c/s (s-s)

1 S = 1 A/V

1 V= 1 W/A

1 Pa = 1 N/m*