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है”ह”ह

IS 10244 (1992): 2, 4-D Ethyl Ester WP [FAD 1: Pesticidesand Pesticides Residue Analysis]

181024411_( ~fflrmed 2002 )

2, 4-D ETHYL ESTER WP - SPECIFICATION

( First Revision)

UDC 632-954: 661-725.11/-12

C> BIS 1992

BUREAU OF INDIAN STANDARDSMANAK BHAVAN. 9 BAHADUR SHAH ZAPAR MARa

NIW DELHI 110002

Sept,mber 1992 PrIee Groa, 2.

AMENDMENT NO. 1 MARCH 2002TO

IS 10244: 1992 2, 4-D ETHYL ESTER WP-SPECIFICATION

( Fint R~l1ision )

( Page2, Table 1 ):

a) 51 No. (ii), col 2 - Delete the words 'after accelerated storage'.

b) 51 No. (iii), col 2 - Delete the words 'after accelerated storage'.

(FAD 1 )Reproll'lphy Unit. BIS. New Delhi. India

Pesticides Sectional Committee, FAD 1

FOREWORD

This Indian Standard ( First Revision ) was adopted by the Bureau or Indian Standards, afterthe draft finalized bf the Pesticides Sectional Committee had been approved by the foodand Aariculture DivIsion Council.

2, 4-D ethyl ester WP is used as a weedlcide.

2, 4-D ethyl ester WP is Icnerally manufactured to contaln 20 percent ( m/m) 2. 4-D ethylester haViD' 18-5 percent ( mtm ) of 2, 4·D acid.In the preparation of this ltandard, due consideration has been given to the provisions of theIn,ecticld,. Act, 1968 and Rules framed tbereunder. However, tois standard is subject to therestrlctione imposed under these, wherever applicable.

For the purpose of deciding, whether a particular requirement or this standard is complied with,the final value, observed or calculated, espressinl the result of a teat or analysillhall be roundedoff in accordance with IS 2 : 1960 'Rules for rounding off numerical values. (revised)'. The numberof si.nificant placel retained in the rounded off value should. be the same as that of the specifiedvalue in this standard.

IS 1~:1m

Indian Standard

2, 4-0 ETHYL ESTER WP - SPECIFICATION

( First Revision)

Above 9 and below 50

SO and above

3.4.1 2,4-D COllte",

When determined by the method prescribed inAnnex A of IS 7233 : 1991 t the observed 2. 4-Dcontent percent ( mlm ) of any of the samplesshall not differ from the declared nominal valueby more than the tolerance limits aiven below:

Nomillal Yalue TolerQllce Limit,Percent P,rcent

Up to 9 + 10 )5 )

± s ~ of the) nominal

+ S) value3 )

3.4 The material shall also comply with therequirements liven in Table 1.

Annex A, the retention time or the 2, 4-D ethylester extracted Crom the sample shall be thesame as that of reference standard 2, 4-D ethylester.

10627 : 1983

7233 : 1991

6940 : 1982

I SCOPE

This standard prescribes the requirements andthe methods of ••mp1inl and test for 2, 4-Dethyl ester WP.

2_CES

The Indian Standards listed below are necessaryadjuncts to this standard:

IS No. Till.460 Test sieves: Part 1 Wire cloth

( Part 1 ) : 1985 test sieves ( third r.,l3lo1l )1070 : 1992 Reagent grade water Specifica-

tion ( third ,.,1,1011 )Methods of test for pesticidesand their formulations (/irstrnl&foll )2,4-D ethyl ester. technical( 8eco"d ,.,1610" )

8190 Requirement for packing of(Part 2) : 1988 pesticides: Part 2 Liquid

pesticides ( second ,evll'on )10243 : 1992 2.4-D ethyl ester Be (/i'81 4 PACKING

re,lIlolJ )Methods for sampling of The material shall be packed accordins to thopesticidal formulations requirements liven in IS 8190 ( Part 1 ) : 1988.

3 IlEQUIREMENTS

3.1 CODltltaeat.3.1.1 The material shall consist of 2, 4-D ethylester technical, together with suitablecarri~r(s). stabilizer(a) and other formulant(s).

3.1.2 2. 4-D ethyl ester, technical emyloyedin the Cormulation of this material ahal con-form to IS 7233 : 1991.

3.2 Delcrl,tioD

The material shall be in the form of a homo-leneoUi powder, grel to dark brown in colourand shall wet readily on mixin. with waterprovidinl a suspension tor suitable usc asapray.

3.3 leI.tlt, TestWhen determined by the method prescribed in

5 MARKING

The containers shall be securely closed andshall bear Icaibly and indelibly the (ollowinlinformation and any other information as isnecessary under the [ru,etfeld" Act. 1968 andRules framed thereunder:

a) Name of the material;b) Name of tho manufacturer;

c) Date of manufacture;

d) Batch number;e) Date of expiry;

f) Net mass or the contents;8) 2. 4-D ethyl eater content percent ( mlm );

andh) A cautionary notice worded as in the

Insecticide.. A.ct, 1968 and Rules.

1

IS 1~: 1992

Table 1 Reqlllre..atl lor Z, 4-D Etll)'1 Elter WP

( Claw. 3.4 )

81 No. a.nct.wlc Reqalrtllent Method of Teat,ReI to

(1) (2) (3) (4)I) 2,4.D content, percent I by masl Nominal value I' declared on Annex A or

the container ( ", 3....1 and 7.2 ) IS 7233 : 1991Ii) Slevin. after acceler1\ted Iloralc ( matfrial 97·0 ci n.r er

palliol throup 75 nlicron IS Sieve ), IS 6940: 1982perceDt by mall. Mill ( ", Note)

iii) SUlpenlibility after accelerated atoru,e, 50·0 Clll.201percent by ma•• , Milt ( ... Note) IS 6940 : J982

iv) Free acidity ( al 2. 4-D ). percent by Ina•• , 2.0 Annex B of thilMax .tandard

V) Wcttability in, seconds, Ma~ 120 CIl1.4 ofIS 6940 : 1982

NOTE - The material need not be subjected to accelerated stor.le treatment if it has crossed half orits ahelf·Ufe IS ascertained from ItI date of manufacture and date of expiry declared on the container.

, SAMPLING

When freshly manufactured material Is offeredCor inspection. representative samples shan bedrawn and tested as prescribed in IS 10627:1983t within 90 days of its manufacturing. Whenthe material is offered for inspection after90 days of its manufacturing, samplinl shall bedone as prescribed in IS 10621 : 1983. However,the criteria for conformity of the materialwhen tested, shall be the limits of tolerances,as applicable over the declared nominalvalue and given under 3.4.1 or this standard., TESTS

7.1 Tests shall be carried out by the appro-priate methods referred to in 3.3, 3.4. col 4 ofTable 1 and 7.2.

7.2 For carrying suspen&ibility teat, weigh aquantity of treated material which could forma 250 ml suspension equivalent to 1 percent of2, 4-D ethyl ester. Transfer the remainingone-tenth suspension Including sedimentquantitatively to the reaction Bask with mini-mumqantity of water and determine the activeingredient content as described in Annex AIS 10243 : 1992.

7.3 Quality of Reagents

Unless specified otherwise, pure chemicals anddistilled water (see IS 1070: 1992) shall beemployed in tests.

NOTE - CPuru chemicals' shall meancbemical. thatdo not contain impurities which afl'ccl tbe re.ult.of analysil.

ANNEX A

( Clause 3.3 )

IDENTITY TEST

A-I PROCEDURE

Weith accurately 1 8 sample in a clean anddryftask, add 25 ml acetone and ahake well. Allowthe solution to settle for 30 minutes. The

2

supernatant liquid is filtered throuah WhatmanNo. S or equivalent' filter paper. Collect thefiltrate which Is to be used for gas chromato..araphy by the method prescribed in Annex Gof IS 7233 : 1991.

IS 10244 : 1992

ANNEX B

[ Table 1, Item (iv) ]

DETERMINATION OF FREE ACIDITY

B-4 CALCULATION

hydroxide solution using I ml bromothymolblue indicator to the firat appearance of greencolour.

8-3.2 Carry out a blank determination with200 ml ethanol. S ml freshly boiled water and1 ml bromothymol blue indicator.

B-1 GENERAL

Free acidity, which actually represents the free2, 4-phenoxy acetic acid present in the materialis extracted with neutral alcohol and titratedagainst standard sodium hydroxide solution.

B-1 REAGENTS

11-2.1 Etbaaol - Neutral, alternatively metha-nol, neutral may be used.

Free acidity,B-2.1 Staadard Sodium Hydroxide SolatloD _ percent by mass 0= ( Y1 - VI ) x Nx 22-1 X2 x 100O'OS N. M

B-2.3 BrolDOtbYlDol Blue Iudlcator SolutioD--0·04 percent solution in alcohol (m/v).

B-3 PROCEDURE

8-3.1 Weigh accurately about 10 I of sampleinto a SOO-ml conical flask and add 200 mlethanol. Mix well and filter the supernatantextract. Take 100 ml filtrate and cool to 4°Cjf required by keeping the flask on ice-water-bath. Titrate rapidly against standard sodium

where

VI = volume, in mi. of standard sodiumhydroxide solution required for thetest;

". == volume, in ml, of standard sodiumhydroxide solution required for blankdetermination;

N -= normality of standard sodium hydro-xide solution; and

flit = mass, in g of sample.

3

"~MarIE

The uae of the Standard Mart II governed by the pro~j.loD'or the Bur,. o/11U1l.8''-'''41 Ac,. 1986 and the Rules and llelDlatioDs made thereunder. The StaDdard Mart011 products covered by aD Indian Standard cODveys the aSlurance that they have beenproduced to complf with the requirements of that Itandard under a well dellned systemof inspectloD, testlnl and quality control wbich i. devised and au{)erviacd by BIS andoperated by the producer. Standard marked products are also contlDuously checked ~BIS for coDtOrD1lty to that standard .. a further saCeluard. Details of conditions underwbich a licence for the use or the Standard Mark may be arantecl to manufacturer. orproducers may be obtained from the Bureau 01 Indian Standarda.

...... of lMIu Stul1an11

DIS is a statutory institution established under the Bur.", 0/ India St.dDrlb Ael, 1986 topromote harmonious development of the activitiel of standardization, markins and qualitycertification of loads and attendinl to connected matters in the country.

CoP,r11lat

DIS has the copyright of all its publications. No part or these publications may be reproducedIn any form without the prior permission in writjna of DIS. This does Dot preclude the free use,in the course of implementing the standard, of necessary details, such .a symbols and sizes, typeor Irade designation. Enquiries relatinl to copyrisht be addressed to the Director.( Publications ), SIS.

Re,lsloa of laell•• Sta.dardl

Indian Standards are reviewed periodically and revised, when necessary and amendments, ifany, are issued from time to time. Users or Indian Standards should ascertain that they are IIIpossession of the latest amendments or edition. Comments OD this Indian Standard may besent to DIS living the following reference:

Doc: No. FAD 1 ( 4003 )

Ameadaaentl __ Slaee Publleatlo.

Amend No. Date of Issue

BUREAU OF INDIAN STANDARDS

Text A1fected

Headquarters:

Manak Bhavan, 9 Bahadur Shah Zafar Marl, New Delhi 110002Telephones: 331 01 31. 331 13 75 Telegrams : Manaklanstha

(Common to all OtBces)

Southern: C. I. T. Campus, IV Cross Road, MADRAS "600113

Northern: SeQ 445-446, Sector 3S-C, CHANDIGARH 160036

Relional Offices :

Central: Manak Bbavan, 9 Bahadur Shah Zafar MarlNEW DBLHI 110002

Eastern: 1/14 C. I. T. Scheme VII M, V. I. P. Road, ManiktolaCALCUTTA 700054

Telephone

J331 01 311331 13 75

l37 84 99~ 37 85 61,}37 86 26, 37 86 62

ISJ 38 43, S3 16 40,ISJ 23 84

i23S 02 16, 235 04 42,12351519, 2352315

Western : ManakaJaya, E9 MIDC, Marol, Andheri ( Bait) {632 9295. 632 78 S8.BOMBAY 400093 632 78 91, 6321892

Branches: AlIMADABAD. BANGALORE. BHOPAL. BHUBANESHWAR, COIMBATORB.PARIDABAD. GHAZIABAD, GUWAHATI. HYDBRABAD. JA1PUR, KANPUR.LUCKNOW. PATNA. THIRUVANANTHAPURAM.

Prlated at Prlatwel. Prlat.n. AlilUb. laclaa

Text1: (Reaffirmed - 2012)