Table Of Content

इंटरनेट मानक 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. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 14251 (1995): Captan, Technical [FAD 1: Pesticides and Pesticides Residue Analysis] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS14251 : 1995 ~fI<ff14 4'..,c/? REAFFIRMED 2'''''. (~tA,~-~ 11111'111, ofI • ,~ • Indian Standard CAPTAN, TECHNICAL - SPECIFICATION (FirstReprintDECEMBER 1996) UDC 632.951CAP ©BIS 1995 BUR EAu 0 FIN DI AN STA·;NDAItD S MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 NOHIftb,' 1995 AMENDMENT NO.1 FEBRUARY 2007 TO IS 14251: 1995CAPTAN, TECHNICAL SPECIFICAnON (Page 2, AnnexA, clause A-2.2.3, line7) - Delete "Carry out a blank titrationalso t• (FAD 1) aeproaraptlyunit,8m:NewoeihLIJda PesticidesSectionalCommittee,FAD1 FOREWORD This IndianStandardwas adoptedbythe Bureauof IndianStandardsafter the draft finalized bythe PesticidesSectionalCommittee,hadbeenapprovedbytheFoodandAgricultureDivisionCouncil. Captan,technicalisemployedinthepreparationoffungicidal formulations. Captanistheacceptedcommonnamebythe InternationalOrganizationforStandardization(ISO) for N-(trichloromethylt'hio)-4-Cyclohexene-l, 2-dicarboxymide. The empiricalandstructural formulae and molecularmassofcaptanaregivenbelow: EmpiricalFormulae StructuralFormula Molecularmass o cq.-SCCI J 300.6 o Inthepreparationofthisstandard,dueconsiderationhas beengiven totheprovisionsoftheInsecticides Act, 1968 and the Rulesframed thereunder andStandards ofWeight.s and Measures (Packaged Com modities)Rules, 1977.However,thisstandardissubjecttotherestrictionsimposedunderthesewherever applicable. Forthepurposeofdecidingwhetheraparticularrequirementofthisstandardiscompliedwith,thefinal value,observedorcalculated,expressingtheresultofatestoranalysis,shallberoundedoffinaccordance with IS2 : 1960 'Rules for roundingoff numerical values (revised)·. The number ofsignificant places retainedintherounded offvalueshould bethesameas thatof the specifiedvalueinthis standard. IS 14251: 1995 Indian Standard CAPTAN, TECHNICAL - SPECIFICATION 1 SCOPE 5 MARKING Thisstandard prescribesthe requirementsand the 5.1 Thecontainersorsacksshallbemarkedlegibly methodsofsamplingandtest forcaptan,technical. and indeliblywith the following information: 2 REFERENCES a) Nameofthe material; The Indian Standards listed below are necessary b) Nameofthemanufacturer; adjunctstothisstandard: c) Batch number; d) Dateofmanufacturer; IS No. Title e) Dateofexpiry; 6940: 1982 Methodsoftestforpesticidesand f) Captan content, percent by mass (mlmv, theirformulations (first revision) Minimum; 8069: 1989 High density polyethylene g) Netmass inkilograms; and (HDPE)woven sacks for packing h) Any other information required under the pesticides (secondrevision) Insecticides Act, 1968 and Rules framed 8190(Part 1) : Requirement for packing of pes thereunderandtheStandardsofWeightsand 1988 ticides: Part 1 Solid pesticides Measures (Packaged Commodities) Rules, (secondrevision) 1977. 10946: 1984 Methods of sampling for techni 5.2 HIS Certification I\larking calgradepesticides 3 REQUIREMEN1'S Theproductmayalso bemarkedwith the standard mark. 3.1 Description The material shall be in the form of light yellow 5.2.1 The useofthe StandardMarkisgovernedby powder,free fromextraneousimpuritiesandadded the provisions ofBureau ofIndian Standards Act, modifyingagents. 19S6 and the Rules and Regulations made there under. The details of conditions under which the 3.2 The material shall comply with the require licencefortheuscofStandardMarkmaybegranted mentsgiven in Table 1. to manufacturers or producers may be obtained 4 PACKING from the Bureau ofIndian Standard. The materialshall be packed in mild steel/tinplate 6 SAMPIJN(; or fibre-board containers or HDPE woven sacks (see IS8069: 1989).Thecontainersshallalsocom Representative samples of the material shall be plywith the general requirements asspecified in 2 drawn asprescribed in IS10946: 1984. of IS8190(Part 1) : 1988. "rubleI Requirements for Captun,Technical (Clause 3.2) sa Charactertstlc No. CINo.of IS6940:1982 (1) (2) (3) (5) i) Captancontent,percentbymass(In!ln). 90.0 A Min ii) Moisturecontent,percentbymass(In/,,.,). 1.5 4 Max iii) Freeionicchloride(asNaCI)percentby 2.0 B mass(mlm),Max 1 IS 14251 :1995 ANNEX A [Table 1,Item (i) ] DETERMINATIONOFCAPTANCONTENT A-I TITRATIONMETHOD After refluxing, add cautiously 5 ml hydrogen peroxide,boilforanother 10minutes.Ensure that A-l PRINCIPLE volumedoesnotgodownbelow80ml, Add more Captanishydrolyzedwithdilutesodiumhydroxide hydrogen peroxideand boil to bring the solution and the inorganicchlorine is determinedbyVol practically colourless, Cool, add 10m1nitricacid, hardmethod. 1gferricsulphateand 1ml saturatedferricnitrate or ferricalum solution. Add from aburette50ml A-2.1 Reagents silver nitrate solution. Add 5 ml nitrobenzene, A-2.1.1 Acetone- A R grade. shake and titrate with standard potassium thiocyanatesolution. A-2.t.2·MethWtO/,- A R grade. NOTE- Adroportwoofphenopthalineindicatorsolution A-2.t.3 Hydrogen Peroxide- 30 percent (v/v). maybeaddedatthebeginningandifnecessary,moresodium hydroxide solution should be added to keep the digestion A-2.1.4 Sodium HydroxideSolution- 0.3N. mixturealkaline. A-2.1.S SilverNitrateSolution- 0.1 N. A-2.Z.3 Transfer another too-mt aliquot of the A-2.1.6 Standard Potassium Thiocyanate Solution solution obtained in A-2.2.i to another 500-ml -O.IN. Erlenmeyerflask. Add40rnlwater,10mlnitricacid and 1g ferricsulphate. Carryout titration under A-2.i.7 NitricAcid- 1.1(v/V). identicalconditionsas giveninA-2.2.2 butwithout A-2.I.S FerricSulphate- A R grade. refluxing. Complete the titration within two minutes.Carryoutablanktitration also. A-2.1.9 FerricAlumSolution orFemeNitrate Solutionsaturated A-2.3 Calculation A-2.i.tO Nitrobenzene Caplancontent, percentbymass= A-2.i.11 PhenopthalineIndicatorSolution [<V2 - VI) O.I00~ x x 2.5 x N x 100] _ 5.142Y A-2.2 Procedure A-l.2.i Weighaccurately(a quantityofthesample containing1g) ofcaptanand transferto a250-ml where = volumetricflask. Add 125 mlacetone to the flask V2 Volume,in ml,of standard potassium andshake for30seconds andshaking iscontinue thiocyanate solution required for after every 3 minutes for 15 minutes to dissolve blank; = solublematerial.Addmethanoluptothemarkand VI Volume, in ml, of potassium mix thoroughly. Let insolublematerialsettle.Ad thiocyanate solution required for just thevolumeagain,ifrequired. sample; A-2.2.2 Transfer 100 ml aliquot to a suitable N = Normality of standard potassium thiocyanatesolution; refluxing flask with addition of methanol as = described in A-2.2.1. Add50mlsodiumhydroxide M mass, in g,of the sample taken forthe solution and reflux for one hour in alkaline test;and medium.Thedigesuon mixtureshouldbe alkaline Y = Free ionicchloridecontent, percentby whenthedigestion isfinished. mass(seeAnnexB). 2 IS 14251 : 1995 ANNEX B [ Table 1,IIel11 (iii) ] DETER~IINATION OF FREE IONIC CIILORIDECONTENT B-1 REAGENTS B-3 CAl.JCUIATION n-1.1 SilverNitrateSolution - 0.1 N. Free ionic chloride content (as NaCl), percent bymass B-l.2 FerricAlum IndicatorSolution _ (V:,! - ~/l) x 5.846 x N B-1.3 Standard Potassium Thiocyanate Solution - M -O.IN. where B-l.4 Dilute NitricAcid - 10percent (v/v). V2 = Volume, in rnl, of standard potassium B-2 })ROCEDURE thiocyanate solution used for blank titration; Weigh about 1 g of the sample into a 2S0-ml VI = Volume, in ml, of standard potassium Erlenmeyerflask.Add50mlwaterand 10mtdilute thiocyanate solution required for nitricacid. Add 25mlsilver nitrate solution and 2 sample; ml of the ferric alum indicator solution. Titrate N = Normality of standard potassium against standard potassium thiocyanate solution thiocyanatesolution used;and till faint red colour isobtained. Carry out a blank M = Mass, in g,ofthe sample taken for the titration also. test. 3 BureauofIndian Standards BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmoniousdevelopment of the activities of standardization,markingand quality certificationof goods and attendingtoconnectedmattersinthecountry. Copyright BIS has the copyrightof all its publications. No part of thesepublicationsmay be reproducedin anyform without the prior pennission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and- sizes, type or grade designations. EnquiriesrelatingtocopyrightbeaddressedtotheDirector(Publication),BIS. Review ofIndian Standards Amendmentsare issuedtostandardsas theneedarisesonthe basisof comments. Standardsarealsoreviewed periodically;a standardalongwith amendmentsisreaffirmedwhensuch reviewindicatesthatnochangesare needed;if the review indicatesthatchangesare needed,itistakenup forrevision. Usersof IndianStandards shouldascertain thattheyare in possessionof thelatestamendmentsoreditionby referringto thelatestissue of'BIS Handbook' and'Standards MonthlyAdditions'. This Indian StandardhasbeendevelopedfromDoc:No. FAD 1(272 ). AmendmentsIssued SincePublication AmendNo. DateofIssue TextAffected BUREAUOFINDIANSTANDARDS Headquarters: ManakBhavan,9BahadurShahZafarMarg,NewDelhi110002 Telegrams:Manaksanstha Telephones: 323 01 31, 323 83 75, 323 94 02 (Common toalloffices) RegionalOffices: Telephone Central : Manak Bhavan, 9BahadurShahZafarMarg 323 76 17,323 3841 NEW DELHI 110002 Eastern : 1/14 C.I.T.SchemeVIIM,V.I.P.Road,Maniktola 33784 99,3378561 { CALCUTIA 700054 33786 26, 337 9120 Northern : SCO 335-336, Sector34-A, CHANDIGARH 160022 603843 { 602025 Southern : C.I.T.Campus,IVCrossRoad,MADRAS600113 23502 16,2350442 { 235 15 19,23523·15 Western : Manakalaya,E9 MIDe,Marol, Andheri(East) 8329295,8327858 { MUMBAI400093 832 78 91, 832 7892 Branches AHMADABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. PATNA. THIRUVANANTIIAPURAM. Reprograpby Unit,81S,NewDelhi,India