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 8496 (1977): Propoxur, Technical [FAD 1: Pesticides andPesticides Residue Analysis]

r:r2

IS I 8496,- 1977

Indian StandardSPECIFICATION FOR

PROPOXUR, TECI-INICAL

UDe 632.951 PRO

BtJREAlJ o It' INDIAN ~ rANllA]{DSM AN.\ J~ 1UI \ V 1\"J, q n \ II \ I HI, .... 1I \ I 1 / \ 1 \ I\. ~ 1 \ 1,( ,

NI \\ III I III J IlHH1'

IS : 8496 • 1971

( Continued from pag' I )

Members

JnrST DIREC'fOR Oi' AOltlCULTURE

( ]ll.;Vl£I.OPMENT & ICP )f) E PUT Y DJlc.l!~CTOR. nll'

A(]RICUL'l'CHl'~ ( PI~ANTPnO'l'ECTION ) ( Altern.ue )

Dn R. L. !(ALlt.\DB R. P. CHAWLA ( Alternate )

I)H. KISIIAN SJ~GH

RfpreJ'tnting

Depar,.tJnent of Agriculture, Govern ment e)f

Karnataka, Mvsore

Punjab Agricultural University, Ludhiana

Indian Institute of Sugarcane Research (ICAR),Lucknnw

DH. S. C. SnlVASTAVA ( Alternate )Snru S. }Z. l\!IAJlJ!\IDAlt Central Food Technological Research Institute

( CSIR ), MysoreSH ttl :\1. 1"1 u-rnu ( Alternate )

SHHI K. S. !\{bHTA Bharat Pulverising Mills Private Ltd. BombavSUIH S. CHA'l"l'l~RJI ( Alternate ) .

Dn H. N. !vIoHAN R.Aq Pest Control ( India) Private Ltd. BombaySli HI I\-{fJ){.\N S. RAO ( Alternat« )

Dn A. L. !\{OOKERJEE Cyanamid Iudia Limited, BombavSURI J. P. 1',\ HIK It ( Alternate ) .

Dn S. K. ~'luKHJ-:HJKE Agricultural Chemicals Division, Indian AgriculturalResearch Institute ( leAR), Ntw Delhi

Food Corporation of India, New Delhi

DR C. C. SF.SGUPT.\

Entomology Division, Indian Agricultural ResearchInstitute ( rcxa ), New Delhi

Directorate General of Armed Forces MedicalServices ( Ministry of Defence ), New DdJli

Department of Agriculture, Government of Orissa,Bhubaneshwar

Suut J. l\1. SATP.\TItY ( Alternate ) .DR K. D. SIlAR~IA Directorate General of Technical Development,

. New DelhiDR K. S. Sl~G}I Indian Veterinary Research Institute (ICAR).

IzatnagarSHItI S. C. SHIVASTAVA ( Alternate )

r», R.. S. DEWAN ( Alternat« )SHRI K. R.. NA.RAV ..\l'A RAO

SlIRl J. P. GUPTA ( Alternate)DR K. D. PAHARtA Central Insecticides Board, Directorate of Plant

Prot.ection, Quarantine & Storage ( Ministry ofAgriculture & Irrigation), Faridabad

Dn S. Y. PANDJT Bayer ( India) Limite-d, BombaySHRI D. N. NAltllATE ( Alternate )

u« T. N. PAR'l'HAsAR.,'rnY R("'gional Research Laboratory ( CSIR ), H.yderabadSIIlU M. A. PAT]':I, Department of Agr iculrure, Govcrnrnenr of Gujarat ,

Ahmadabad .SUllI Y. A. PRADHAN Rallis India Lirnitcd , Bombay

DIt Z. J. KAPADIA ( Alternate )I1u. F. RAHMAN Tea Research Association, Calcutta

Dn <.;. S:\1'YANARAYANA ( Alternate )SHill T. V. R:\'L\ Rl·;l>DY Department of Agriculture, Government of Andhra

Pradesh, HyderabadStllll K. SA'l'YA~AR.-\~.' Rxo ( Alternate)

SHRI G. K. R.\o Ministry of Defence ( DGI )nil .'\. K. SEN ( Alternate )

Du RAT'L' A .s Lxr.

( Continued on pagt 7 )

1.

AMENDMENT NO.1 NOVEMBER 1978TO

IS : 8496-1977 SPECIFICATION FORPROPOXUR, TECHNICAL

A1teratioD

( Pages 5 and 6, APPt1~dix A ) - Substitute rhe following for the exist­ing matter:

APPENDIX A[Table 1, Item (i)]

DETERMINATION OF PROPOXUR CONTENT

A.O. GENERALA-O.! For the determination of propoxur content, two methods have beenprescribed. Either of these can be used as routine method.

A-I. HYDROLYSIS l\IETHODA-I.I Principfe - The sample is hydrolysed with GO percent sulphuricacid under reflux and the methylamine formed is distilled into 2 percentboric acid solution and titrated directly against standard 0'1 N sulphuricacid using bromocresol ~rccn indicator.

A-I.2 ReagentsA·l.2.1 SuljJhu,ic ,,'tid Soultian - GO percent (11'/"). Pre-rare by auclillg

33 ml or concentrated sulphuric acid to ~O 1111 of distilled water, Mixand allow to cool. Make up to 100 ml with distilled water,

A-l.2.2 Boric Acid Solution - 2 percent (mlu). Prepare by dissolving20 g boric acid in about 500 ml of hot water, cool, add 2 rnl 0(0·1 percentbromocresol green, dilute to one litre, and mix. This solution need notbe prepared accurately and may be prepared in a large volume sufficientfor several weeks' use. If the colour fades on standing, more indicatormay be added to the remaining portion.

A-l.2.3 Sodium Hydroxide Solution Concentrated - Add 40 g of sodiumhydroxide to about i5 ml of distilled water. Mix and allow to cool.Make up to 100 ml with distilled water,

A-l.2.4 Bromocresol Green Indicator Solution - 1 percent (mIll). Dissolvehr\:r.0crc:sol green in ethanol, alternatively prepare an aqueous solutiono~ ., ~.~ sodium salt as follows,

A-l.2.4.1 Rub 100 mg of bromocresol green in an agate mortar with~-9 ml of 0-05 N sodium hydroxide. Afler the indicator has dissolvedcompletely) add sufficient water to make the volume up to 100 ml.

~}.-t.' ProcMure - Weigh accurately about 0'8 g of the sample into a~ :'O-ml round bottomed flask fitted with a ground-glass stopper, add 50 mlof sulphuric acid solution, heat under reflux for one and a half hours, thenadd 10 ml of sulphuric acid solution and reflux for another half an hour.C'A>Ql and transfer the digested sample quantitatively to a one-litre flask.Add 600 n11 or the distilled water and 100 ml or concentrated sodiumhvd rox idc solution. Immediately connect the flask to a condenser (allgl~lSS ) and distil the liberated methylamine into 750-nl1 flask containing5u ml of boric acid solution and bromocresol indicator, until 300 to 350 ru lof liquid are collected. Remove the receiver and titrate the contents withQ. J N standard sulphuric acid until the solution has been brought back toirs original yellow-green colour ..

A-I." CalculatioD) J/]v x 20'9

I ropoxur content, percent by mass = -.------~,(-.---

I' = VOIUtllC, in 011, of 0'1 N standard sulphuric arid requiredto titrate the stcam-disti llcd mcrhy laruinc;

.,\1' c::: normality of standard sulphuric ar id ; and

J\[ = mass, in g, of sample taken fur t he test.

A-2. SAPONifiCATION METIIOD

A-2.1 Principle - Propoxur is saponified with potassium hydroxide i ndiethylene glycol and the methyl amine formed is directly absorbed Inlroric acid solution and titrated against standard hydrochloric acid.

1~ ..2.2 Apparatus - Assemble the apparatus as shown in Fig. 1.

A-2.3 Reagents

A-2.3.1 Potassium Hydroxide in Dirthylen« (,'/yeol - 2 N. Dissolve 56 g of.iorasslurn hydroxide in a minimum quantity of w.ucr and make up to~uu ml with diethylene glycol.

A-2.3.2 Boric Acid Solution - Sec A-l.2.2.

A-2.3.3 A·itrog~n

A-2.3.4 Bromocresol Green Indicator Solution - Sr« A-I.2.4.

A-2.3.5 Hydrochloric Acid - 0-1 N.

2

300

N.'NlEY"

t\"

fo4-----r'So --------

'811 BALl-SOCMET

l"lmm 00 VIGREAUX

COLUMN WRAPPED WITH

ASBESTOS TAPE

2S0ml GRADUATED

CYlINOER~

GAS DISPERSIONruer ,COMISE

fRITTED GLASS'

3')/20 BALVSOCKET

100mi KErTLE

(LEer",C HEATING Mt.NTlE,no WATTS,RHEOSTAT-CONTROLLED

FIe; : ApPARATUS rOR DETI:RAlINATlO:-': OF PROPOXI'R CON1'E:-':T

A-2.'1!'IVcedure - Weigh accurately about 0'5 g of propoxur in the100-11. rc.iction flask. AJd 50 ml of potassium hydroxide in diethyleneglyc; and connect the Ila~k to the evolution assembly and nitrogen,1');\(1' lOO ml of boric acid solution in i hc 2;){)-ml mc asur ing cylinder andcor..uct the sallie 10 the gas dispersion lube, Connect nitrogen from

3

cylinder and adjust the flow rate to 150 m1/minute. Start heating theflask and attain boiling within 5 minutes" Continue heating and passingnitrogen for a period of one and a half hours. Disconnect the cylindercontaining boric solution and transfer into a 250-ml conical flask. \Vashthe cylinder and the dispcrlion tube with distilled \vater and add thewashings to the contents or the conical flask. Titrate immediately against0'1 N hydrochloric acid. The end point is from green to yellow.

A.2.5 CaICJl1atiollY X N X 20·9

Propoxur content, percent by mass = M

J' = volume of standard hydrochloric acid consumed In thetest;

J{ - normality of hydrochloric acid; andAI == mass of sample, in g. taken for the test.

( AfCDC 6)

4

Repro&raphy Un1t, 815, N~w Delhi, India

AMENDMENT NO. 2 OCTOBER 1979TO

15:8496-1977 SPECIFICATION FOR PROPOXUR, TECHNICAL

A1tera ti on.... -- ... _......... -

[Page 4, Tab z.e i, co i 3, aqaine t s: No. (1)] ­Substitute '95' for '98'.

(AFCDC 6)

AMENDMENT NO.3 MAY lY82TO

IS : 8496-1977 SPECIFICA~'ION FORPROPOXUR, l~ECHNICAL

Alteration

[ Pages 5 and 6, /ljJpc7:dix 1\ ( sec IIlso Amendment No.1) J-- Substi­tute the following for the existing Appendix:

APPENDIX A[ Table 1, Item ( i ) ]

DETERMINATION OF PROPOXUR CONTENT

A-O. GENERAL

A-O.I Either of the two methods, namely ultra-violet ( uv ) spectrophoto­metric rncthod ( sec A-I ) or saponi ficat ion method ( sr» A-2 ) may l)(~

used fo r the dctcrrni natiuu of l'l'opoxur content. 1JO\VCVCl't ultr .r-vio lr-tspectrophotometric method ( sec A-I ) shall be the referee ruct lrud in c.rscof dispute.

A-I. ULTRA VIOLET SPEC'fnOPI-IOTOMETRIC METHOD

A-I.1 Principle - 2-IsoprofJoxy phenol liberated by alkaline hydrolysisis determined from the d il lcrcnt ia l ultra-violet spectrum of its alkalinesolution against acidic solution at 292 nm.

1\-1.2 Apparatus

A-I.2.1 UV SptclrophololntltT

A-l.2.2 v olumctru: Flasks - 100 rnl capacity.

A-l.2.3 Pipette - 10 ml capacity.

A-I .2.4 Cuuettes - I ern quartz.

A-1.3 Reagents

A-I.3.t Ethyl Alcouol

A-l.3.2 So diu m Hydroxide Solution s-: 1 N.

Pricells 1·50

A-l.3.3 Sulphuric Acid Solution - 1 N,

A -1 •:1.1 I), o[m«11' - ()r k nown ~}9 p (" rcr.n t PItI ~ P\I r i t y .

A-I.1 P,·t-paratioll of Standard and Sampl.- Solnt ions - It i'j \,('JYi'lIl'"' Lilli ill pH'p:U ill'~ 111'- ....;"/Ilt/tllt! aud ,\'''"11,11' .\'"1:",',,,,\, IILI' \'C./IIII"­

,1"C"II:tl;IIIIS \\,;11. ('11:1'11',;111'. t('IIII)f'I'~'l'II('S :'1'(' ~lvc.ifl(·(I. 'l'llis;" ;I('('(IIIII,li',II('(1

hy hrin~~ill~~ raeh solut iou to the volume ru.uk jll"l h(·f()( C pi o( ... ('di .. ~~ to

the lie x l ~~t ('1' in the pruccd III c as indica leu.

A-l.4.1 I'rcparation (~f Standard Solution

1\ -1 . 4 . -r . J Accurately weigh U' 37 to O·38 1~ 0 f pure propoxur( see A-l.J.4 ) in a 100 rnl volumetric Ilask. Add ethyl alcohol to rlisanlveand make up the volume with alcohol. Call this as Standard Solution A.

A -1,4.1 ,2 Transfer 10 rnl of Standard Solution A into a not her 100 mlv0 III111e t ric f Iask . Add su ml of ethyl alcohol a Jl d 2 .5 11,1 or I N sod iuIn

) I YUr()x id (' sol uti 0 n. K co r P t h r. m i x t urca t roo ni U· n1( )( T a til rt • 1'0r 1 h C) u r.Dilute to mark with alcohol and shake well to get uniform solution. Callthis as Standard Solution ]1-

A-J .4.2 Prrpnration of Sa71IJ}le Solutions

A·,l.4.2.1 Accurately weigh a quantity of the sn mpl« c o n t a rn i ng()-:~J{):-f: 0 O:!U g of propoxur in 100 1111 v o l u m e t r i c llask. Add ethylalcohol to dissolve arid m a k e up th e volume. C a II this as Srl1l1/,It.Solution A.

A-I.4.2.2 Transfer 10 1111 of S"TnjJle Solutio" ,\ into n not hr r 100 rn lv0 Iumet ric: flask . Add 50 m I 0 f ethy1 ale 0 ho l and 2'~' In1 0 I 1N sod i u mhvvho xid c solution. I('f'p the m i xturc at room tcmpr rauu (. fur (Inc hour.l Jilutc to ru a r k with ethyl alcohol and shake well to get u nifor rn solution.Call this as Sampl e Solution B.

A-1.5 Procedure

A-I.5.0 '1"0 obtain accurate results it is important that analysis ofS/rl1ulanl and SaTII/lltSO{llli'JlIJ be car r i c d simultuucously, through the pro­r cduic givell ill A-I.5.1.

A-I.5.1 II;p(·tt(~ollt 10 na!(';lcla ofSltl1ldfll,ISlJlulioIlB( sr» A-l.4.1.2 );\11(1.4..,'/111'1'/" '\'O/llt;o1' B ( sr e A-I.4.2.2 ) into two ~('p;lr;ll"sC'I"ic)rl')t)lId

volullictric flasks. 'ro olle set 0 f llasks ("()rttpri~ilJg Sfrl1lt/ilJtl ~\lld SOllljde- Solutions add 20 ml of I N sulphur ic acid solution w h i lc to another set of

flasks add:!(J ml of I N sodium hydroxide solution. Make up the volumei n cac h II .t sk wit h c thy 1 a Ic o hot. A ft crt h 0 r 0 ugh m i x i n g t a kc the lJ Vtrnnsmitt.uice/absorbancc curve from 275 to 3~:HIII1, t:lkiIlg acidic solutioni n rcfcrcruc cell and aJkalin(~ sol uti 0 n in sa mplc cell. 'fhe ruuxiruumabsorption will be at around 292 nrn.

N'~TJ: --- 'I'In- ;a"~()rJ..lllI''' 111"~I~IIICIIlC'lltof t lir- S/allllmrl.lllci S',T/ililf SII/'''ifll/,I ~h:dl

a~ r«.(. \ ..... i, " i n J: I () p (.r c (. 1\ t nrc, a( II ()~ h(.r ,

2

A-I.G Calculation

A-J.G.I l',npuxlIr cout,',.t, percenti)y mass

where

,A,

A~

i'1 1

./113 =/)

nbsorbnurr: of standard solution;

absorbance of sample solution;

mass, in g, of pure propoxur;

mass, in ~, of sample taken for test; and

percent purity of pure propoxur.

A-2. SAPONIFICATION M~:rrHOD

A-2.1 P.·iIU"iplc - Prop0:'\l1t' is ~aponificd wit h p o t a s s i um Itrd,.()x;cI(~ ind it· t Ity lvn f " 1~ I\,(' (» I :\"d til (~ III (" t It YI a III i I H l'ol'1I \( ~dis d ir ('('IIYaI)t; () rl j('dillhur ic acid snltlt(ou :lud I;flat('d .,::a;ust st;ll1d,ud hydrochloric acid.

A-2.2 Apparatus - Asse ml ilc tlic apparatus as shown in fig. 1.

A.2.3 Reagents

A-2.3.1 Potassium J Iydroxide in Diethylene Gl.J'col- 2 N. Dissolve 56 gof potassium hydroxide in a minimum quantity of water and make upto 500 Ill} wit li diethylene glycol.

1\-2.3.2 Boric Acid Solnticn .'- 2 percent ( Tn/v), Prepare liy di ssolv ing20 g boric acid in about 500 1111 of hot water, cool, add ~ Tnt of 0-\ pr rce utbromocresol green, dilute to one litre, and (nix, .I'his solution nce d not beprepared accurately and may be prepared in a large VOIUlllC sulhcicut forseveral wcclrs ' usc, If the colour fades on standing, more indicator rnaybe added to the remaining portion.

A-2.3.3 Nitrogen

A..2.J.'. Jl,1111l0C"fJO! ( irrrn Indirnt or So/ltl ion -- 1 percent ( m III ). 1)i~~() 1vcIJI-OIIlOCl"csol !~rf'('Jl ill etllyl :dcohol alternalively prcpale all aqueoussolution 0(' the sodium salt as Io llows.

A - 2.3.4. 1 Rul» I00 tn~~ of hrornocrrso l green in an agate mortarwit h 2'9 lid of 0 0.5 N ~(Jdi""llq/droxide. After the indicator has dissolvedcorn p1etc Iy, add suf licicut water to make the volume up to 1UU n11.

A-2.3.5 Ilvdrochloric Add -·-0'1 N.

A-2.4 P.·oc(·<lure - \Vci'~h ac cur at e ly about 0'5 g of p ro po x u r in theI (l0 -rn l 1 r: : let i()11 IIa sk. 1\ d cI :1 () m1 0 f Pn tass i III n h y d r 0 x ide i 11 die thy 1(' n cg 1}'r:()I a IId ('0 n n C.L t t II f" Ita \t k I' , t Itc t:v0) u t i (\11 ass c m b IY and nit r 0 g en. P):lC C

100 m l of hori c acid solution in the 2 r)()- n l l measu rinu cylinder and('011 nrct II H~ ~;l H)(' to lhc" r~ at, cli"pcrsiolt ttl JJ{", Co nn~ct nitrogen from

3

cylinder and adjust the flow rate to 150 ml/rninutc. Start heating theflask and attain boiling within 5 minutes. Continue heating and passil1~

nitrogen tor a period of one and a half hours. Disconnect the cylindercontaining boric solution and transfer into a 250-1ll1 conical flask. Washthe cylinder and the dispersion tube with distilled wau-r and a<ldthe washings to the contents of the conical flask. 'Titrate iuuucdiarclyagainst O'l N hydrochloric acid. The end point is from green to yellow.

ELECTRIC HEATING MANTLE,220 WATTS, RHEOSTAr-COIITlIOLLL 0

GAS DISPERSIONITUOE,COARSE

r-~lff(O GLASS:,

KETTLE

1817 BAlt·SOCKET

250ml GRADUATEDCYLINDER~

35/20 BALL-SOCKET

19mn'l 00 VIGREAUXCOLUMN WRAPPED wrruASBESTOS TAPE

!-----150-------

300

!-

0---....

rII

NZINLET

All d irne nsions in m il lrrnctrcs ,

FIG. 1 Al'l'AIV\TUS I'OR 1)J;'flmllflNATION OF 1'1{OI'OXI1l: CoN IFNI

4

v x N x 20-9.u:':

A-2.5 Calculation

Propoxur content, percent by mass =

where

V -= volume of standard hydrochloric acid consumed in thetest;

N = normality of hydrochloric acid; and

ill == mass of sample, in g, taken for the test.

( AFCDC G)

5

Prillt.cd at New India Pr lut IIIIl l'rl'l'IM. !{llllril\, llldltk

AMF:NDMENT NO.4TO

DECEMBER 1988

IS : 8496·1977 SPECIFICAl~ION FORPROPOXUR, rrECHNICAI~

( l-'t~e 6, clause A-t.3.t ( see also Amendment No.3)] - SubstituteC Metlryl A lcohol ' for' Ethul Alcohol '.

I Page 6, clause A-l.3.2 ( see also Amendment No.3) ] - SubstituteC Sodium Methoxide Solution -1 N. 'for ' Sodiun Hudroxide Solution - 1 N. '.

( AFCI>C 6 )

Printed at New India Printing Press, lChUli., India

AMENDMENT NO. 5 JULY 1990TO

IS 8496 : 1977 SPl~:CIFICATION FOR PROPOXUR,rfECHNICAL

[ Page 6, clause A-1.4 ( see also Amendment No.3) ] - Substitute thefollowing for the existing clause:

'A-l.4 Preparation of Standard, Sample and Blank Solutions'

[ Page 6, clause A-1.4.2.2 ( see also Amendments No. 3 and 4) ]­Insert the following after A-1.4.2.2:

'A-l.4.3 Preparation of Blank Solution - Prepare a blank solutionexactly in the same manner as described in A-1.4.2.1 and A-1.4.2.2. 'I

[ Page 6, clause A-I.5.l ( see also Amendments No. 3 and 4 ) ]­Substitute the following for the existing clause:

'A-1.5.1 Take out with the help of pipettes 10ml each of Standard Solu­tion B ( sec A-l.4.1.2 ) and Sample Solution B ( see A-I.4.2.2 ) into twoseparate sets of lOO-ml volumetric flasks. To one set of flasks comprisingStandard and Sample Solutions add 20 mliN sulphuric acid solution whileto another set of flasks add 20 ml 1N sodium methoxide solution. Makeup the volume in each flask with methyl alcohol. Similarly prepare acidicand alkaline solutions of the Blank Solution ( see A-l.4.3 ). LIse the acidicsolution in the reference cell and the alkaline solution to adjust the zeroof the spectrophotometer. After thorough mixing separately of the StandardSolution and Sample Solution, take the absorbance curve from 292 to2941nlTI.

NOTr: - The absorbance measurement of the Standard and Sample Solution."should agree within ± I0 percent each other.'

( FADe J )

Printed at Printwell Printers. Delhi, India

IS : 8f96 • 1977

Indian StandardSPECIFICATION FOR

PROPOXUR, TECHNICAL

o. }4' 0 R E W 0 R D

0.1 This Indian Standard was adopted by the Indian StandardsI nstitut ion on 30 June 1977, after the draft finalized by the Pest Contro]Sectional Committee had been approved by the Agricultural and FoodProducts Division C~oun('il and the Chemical Division Council.

0.2 Propoxur is a non-svstcm ic insect ic ide and is effective againstagricultural and h ousch o ld insect pests.

0.3 Propoxur is the accepted C0111mOtl name by the International()rgallization for Standardization (ISO) fur the insecticidal r hem ica lO..isopropoxyphenyl rnethyl carba matc or 2-isopropox) phenyl met hylcarbamate. The ernp ir ical and structural formulae and the rnohcu Iarmass of propoxur are as indicated be low:

l~'ml)irical Formula

C~11111:jX{)3

St rurtur al Formula

o. C. N H . ( y)

IIo

A10lecular Alass

:!O~

0.4 In the pn"parat ion of this standard. due r ouviderat ion has been giv~1l

to thc" provisions of the Insc('ticides Arr , 1~H1::, a nd the l~ul('s framr dthereunder. However, this standard is subject to t hc restrictions imposedunder these, whcrt-vcr applicable.

0.5 For the purpose of deciding w lu-t lu-r ;l particular rcquirr-rueut ofthis standard is rom pl ir-d w it h , t hr: final va lur , observed or calvul.ucd ,expressing the result of a test or a n.r lvvi- :--hall 1)(' rou u dcrl ofl' ill.ucorduucc with IS: 2-1 qGO*. The nu m l n-r of significant places retainedin th(~ rounded off v.i hn should he the sa me ;\S that of t he specified valuein this standard .

• Rules fOI rouJlding off numer ica l values ( rri.ised ) .

3

IS *8496·1977

I. SCOPE1.1 This standard prescribes the requirements and the methods of sampl­ing and test for propoxur, technical.

2. REQ.UIREMENTS

2.1 Deac:ription - Propoxur, technical, shall be in the form of whiteto light pink crystalline solid, with a characteristic odour, and shall befree from foreign matter or added modifying agents.

2.2 The material shall also comply with the requirements specified inTable 1.

TABLE 1 REQUIREMENTS FOR PROPOXUR. TECHNICAL

9

4

6

11.3

METHOD OJ' TEST, REF TO,-..---_...._-----....,Appendix of CI No. ofthis Standard IS : 6940-

1973-(4) (5)

A

0'1

0'5

(3)

'.lll

86 to 91'5°C1)'05

REQU!REMt:NT

(2)

CHARACTERISTIC

(I)

i) Propoxur content, percent bymass, Min

ii) Moisture content, percent hymass, Max

iii) Material insoluble in acetone,percent by mass, Max

iv) Melting pointv) Acidity ( as H.SO. ), percent

by mass, Max

-Methods of rests for pesric ides and their formulations.

SLNo.

3. PACKING AND MARKING

3.1 Packing - The material shall be packed in dean and dry mildsteel containers with a loose polyct hyk-m- liner of thickness not less than0'062 mm. The containers shall a lso comply with general requirementsas stipulated in 2 orIS: 3190 ( Part I )-1976-.

3.2 Marking - The container shall bear legibly ancl indelibly thefollowing information and any other information as is necessary under theInsecticides Act and Rules:

a) Name of the material;b) Name of the manufacturer;c) Batch number;d) Date of manufacture;e) Propoxur content, percent (mjm );

-Requir"tllent for packing of pest icides: Part I Solid pesticides.

4

IS : 8496 • 1977

1") .\Il't musx or r o nt e-uts; and

g) Minimum r.uu ionarv not iC(6 \\'onlr-d as In the I nseet ir ides Actand Rules. '

3.2.1 Each cout a inc!' n lay also he marked with t he I SI Cr rt ifir a t innMurk.

NOTF. -- The use of the lSI Certification Mark is governed by the provisions of t heIndian Standards Institution (Certification Marks) Ace and the Ru le and Regu­lations rna d e thereunder. The lSI Mark on products covered by an Indian Standardconvevs rhe assurance that they have been produced to cornply with the requrrementsof that staudard under a well-defined system of inspection, testing and qualitycontrol which is devised and supervised by lSI and operated by the producer. lSImarked prootlc.ts art' also r on t inu ous lv checked by lSI for confor mirv to that standardas a further safeguard. Dera ils of conditions under which a licence for the use oft he lSI Certification Mark rnav be Rranted to manufacturers or processors, may beo hta ine-d Irorn tilt' l'ldi.l t\ Standard..; Fnst i t nt ion,

4. SAMPLING

4.1 Rc prcsent nt ivt" s.mrp lr s of t )1(-' m atrr in l sh.111 be dr.iw n as prescribed111 '[ nclia n SLUH Ll1'<l met hI I( Is fnl' sam plitu; of pest ic ides and the irr'111l\1l1ati()II~' ( under Pl'Cp(l)"~1tjon).

~OTE -- Till :\11("h t irnr t11,- st a nd ard under prrparn t ion is puhlished, tilt' matter.... hall hfO a~ agrc"c-d tel hcatwe("'n lilt" cnnccrrH·d p.ut irs.

5. TESTS

5.1 'r('st s ~h;\ II he c~l1Ti('d out hv t I}(, a pprnpri ate method s referred to 111

('j)1 l-;\ Ild :) of '1'e\hIC 1,

5.2 Quality of Reagents - Un lr ss spr-cificd otherwise, pure chemicalsa 11<\ d ist illc'd \\;\ ('1- t, srr IS: I070-1 ~)77· ) sha II be ern ployed ill the tests.

:"JOTI'; - I PUf('" Cht'llllcab' shall nua n chem ica ls that do not contain irnpur it ieswhich atTt'ct tiH" re ..tI)I' 1'[ n na lys is ,

APPENDIX A[ T ah/(' I, 11em (i) J

DETERMINATION OF PROPOXUR CONTENT

A-O. PRINCIPLE OF THE METHOD

A-O.l The s~ln1plc is hydrolysed wit h GO percent sulphuric acid underreflux and the methylamine ~.rlnt'd is distilled into 2 pc rcent boric acidsolution and titrated d i rcc t ly agaill~t standard U-1 N sulphuric acid usingbromocresol green iud ic.u or .

• Sp~cifi(·ation for water for ~("neraJ laboratory use ( second recision ).

5

IS : 8496 • 1977

A-I. REAGENTS

A-I.I Sulphuric Acid Solution - fiO percent (tnIT!). Prepare byadding 33 ml of concentrated sulphuric acid to 50 ml of distilled water.Mix and allow to cool. Make up to 100 ml with distilled water.

A-l.2 Boric Acid Solution - 2 percent ( m{v). Prepare by dissolving20 g boric acid in about 500 m 1 of hot water, coo], add 2 In] of0"1 percent bromocresol green, dilute to one litre, and m ix. T'his solut ionneed not he prepared accurately and may be prepared ill a large volumesufficic1lt for several weeks' usc. If the colour fades on stand ing, moreinrlicutor Ina]' be added to tlu: remaining portion.

A-l.3 Sodium Hydroxide Solution Concentrated - Add 40 g ofsod iu m hvdroxide to about 75 fill of distilled water. Mix and allow tocool. M~ke up to 100 rnl with dist illed water.

A-l.4 Bromocresol Green Indicator Solution - 1 percent (m!l').Dissolve bromocresol green in ethanol, alternat ivcly prepare> an aqu('()t1~

solution of the sodium salt as follows:

A-I.4.l Rub IOU lng of bromocresol green in an agate mor ta r wit h2'9 m1 of 0"05 N sodium hydroxide. After thr- indicator has dissolvedccunplctely, add sufficient water to make the volume up to 100 TIll.

A,-2. PROCEDURE

A-2.1 Weigh accurately about 0·8 g of the sample into a 2:>0-n1) roundh:-)ttonled flask iittt·d with a ground-glass stopper, add 50 1111 of sulphuricacid solution, heat u nch-r reflux fl)l' one-arid-a-half hours, then add 1() m lof sulphuric acid solution and reflux for another half an hour, (:001

and transfer the dig(-~stcd sample quantitatively to a onr-Iitrr- Ila sk.Add 600 ml of d ist il led water and 100 rn l of concentrated sod iu ruhvdroxide solution. I mrncdiatr-Iy connect the flask to a conrlr-nsc r ( ;,11glass) and distil the liberated merhylarn ine into 7~)O"'lnl flask r o nt a i n i nut)O ml of boric acid solution and bromocresol indicator, until 300 to 3:>0 lidof liquid arc collected. R~mov.e t hc !cceiv(-r an~l t it rat c the contentswith O:1 N standard sulphuric' acid unt il the solution has br-r n broughtback to its original yellr)\v-green colour.

A-3. CALCULA.TIONIT N X 20·9

Propoxur content, percent by mass = M

whereV::: volume, in ml, of 0'1 ~ standard sulphuric acid r~(luired

to titrate t hc steam-d ist il led methylam inr-;

}\;~ :c: normalit y of standard sulphuric acid; and

M = Blass, in g. of sample taken for the test,

IS t 1496 -IfJ?7

( Continuer! from pall 2 )

RtprtsmtinK

U nion Carbide India Limited, New Delhi( Alternate )

National Institute of Communicable Diseases, DelhiDirector General. lSI ( Ex-officio Membr: )

Members

Dn K. SIVASANK.\JtAN

Oft K. N. SHnTVASTAVA

Du u. L. WA'l'TAIISIIRI T. PURNANANDAM,

Deputy Director ( Agri & Food)

Secreta,y

SHltl LA.lJNTlEH. STNc:HAss ist ant Director ( A~ri & Food), lSI

Pr-sricides Subcommittee, AF(~Dr~ 6

Canrener

On K. I). PAJlAJlIA Ct:"ntral I:l'\fTtiridr-s Board. Dirrc.tnratr- of PlantProtrr t ion, Quararn ine & Stnrag« ( Minivu-v ofAgriCldturf' & In iKation ), Faridabad

Member:

Du N. S. !\nllA\VAL Depart rn--nt of Food (!\1ini'\try of o\~ricllltun~ &Irr ic.u ion ). _'\r'\V rh·lhi

nIt K. K,ltI~HNA~tT"RTJtY ( Alternatr )SHI~T E. A .. \T.~tEI/)\ Ciba.(;f·igv of India Li m iud , Hornba v

r». R, .J, K\ \T \'1' ( Alternate ) .DI~ It. I., BA~YI Cf'ntral Forr-n s ir Scirncr Labora torv , C('ntr;l! Hurt"'all

of Invc-u igu t ion , New De-lhi 'DI~ ~. K. B.\~l~ The Alkali ..~ Chrmica l Corporalillll of Incl ia

Limitcd , Calcutta

A~rOl11()n' Limircd , Hallg:dorr-.\,~ri(,111turdl Chcrnical" Di vision . Lndi.m '\~ ..iculturat

]{,.sr·:lrl'll I nsr i 1111 r ( TeAR), l';t'w l)I~lhi

I l indu-unn Insect ic irb-s Lim ited , ~r-w Delhi( Alternate )

:\alioTlal Malar ia Lracl ic.u ion PrlH~raJllnlC·, n,.llllHUlll!J;t\ CllI'JfliL1L I'r i va te Ltd, };IIIllb.JV

Alt.n nute ) , ,U. P. l nvt ir ut e of .\gol icul t ur a l SCil'lH"", KanpllrHhar;lt PIII"'Ti"iJlg Mi l l» P,.i\';\u· Lu l . Bllnd';I\'

( Altri nat e )

r)J~ . \. I', DPTT \ ( Altrrnnte )D It A. K. IIHAT N .\ Co,\I ~

SUB.I A. ~. \i,\T,\ll."J""~

nl~ ~1. S. [)Il \TT

_~ JI H r (.;. J), (~HK " \ 1.1',

~IIHI v. V. K.a-:'l'l-\\H. (

I)I~ K\I>"'\~ Sr'-:l:lf

~Itl~r K. S. 'f'<IiT\Sill:) S, CII \'l''I'I':I~.1f

....~ II I: J l . S. ~ll It L Jo:

\)1: S. K. \-f(TKlll·:I~.II-I·:

nll"l~Clt}ralf" of PLulI Proll"ctillJl, (~II:lraT"ifl" oXSturagf' ( Mi nivr rv or ,-\gl ir u h ute & Irr itra r ion '1,

Faricbh:td.·llt,.rllIlIF)

l\..dli~ fIldi,l Lirni trd , nornbayDu V.I,\I\~lt\ll~\I{!\'·\":'f\

"\111:1 Y. A. PI:\I'II,\'\'

SHUI \f. 1.. Sit '" ( Altrrnate )

DH x. K. Rll" ( .:tltrrnn!« )I),: s. Y. P\"IPIT Hay('" ( Tndia ) I.iJllilnl. Horu ha y

S 1I1~1 D. '\. ~ \ KIl\TE ( .ilternatr )I)I~ T.:'\. P\ltTJI.\S.'H\TlfY R~~ional Rt's('arch La horat orv (CSIR). I Jyunatl.ld~"'III:' x. IL P \'1'1-:1. "rata CheJlllCI t- Lirnitcrl , ~rjth~lp\1r

SIII:J D. x. V, RAO ( ,-(/I",Mit')PI. \\;'1' PHO"l'Ll 'II(I~ AI)Vt~I':lt '1'1)

Ttl!': (~OVFII--':\"':""'I'elF 1~tll \

IS I 8496 • 1977

Rtpr'snatin,Central Revenues Control Laboratory ( Ministry of

Finance ), New DelhiPesticide! Test ing La boratory J H yderabadIndofil Chemicals Limited. BombayExcel Industries Limited, Bombay

( CDn,i"tud from /JlI,' 7 )

MnnbnJ

DR V. S. RAMANATHAN

SHRI C. DHAR.MA RAODB K. K. SA.XENASBBI A. C. SHROJ'J'

SaRI P. V. KANQO ( All,rna', )SHRI K. SUNDARAM Hindustan Petroleum Corporation Limited, Bombay

SIIBI B. R. AJ'MANI ( Alinn ai, )SHIU N. S. VENICETARAKA.N Pesticides Testing Laboratory, MaduraiDR B. L. W ATTAL National Institute of Communicable Diseases, Delhi

SBRI G. C. JOSHI ( AlI"Mt,)

8

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