IS 2600-4: Methods of chemical analysis of zinc and zinc base alloys for die castings, Part 4: Determination of chromium by spectrophotometric method

9 Pages·1993·1 MB·English

by  Bureau of Indian Standards

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 2600-4 (1993): Methods of chemical analysis of zinc and
zinc base alloys for die castings, Part 4: Determination of
chromium by spectrophotometric method [MTD 9: Lead, Zinc,
Cadmium, Tin, Antimony and their Alloys]
“!ा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”

IS 2600 ( Part 4 ) : 1993

Indian Standard
METHODS OF CHEMICAL ANALYSIS OF
ZINC AND ZINC BASE ALLOYS FOR
DIE CASTINGS
PART 4 DETERMINATION OF CHROMIUM BY SPECTROPHOTOMETRIC METHOD
( First Revision J
UDC 669.5 : 543.42 [ 546.76 ] : 621-74-043

@ SIB 1993
BUREAU OF INDIAN STANDARDS
KANAM ,NAVAHB 9 RUDAHAB HAHS RAFAZ MARG
WEN IHLED 110002
February 1993 Price Group 1
sdohteM fo lacimehC sisylanA fo suorreF-noN Metals lanoitceS ,eettimmoC DTM 28
FOREWORD
sihT naidnI dradnatS ( tsriF noisiveR ) was detpoda yb eht uaeruB fo naidnI Standards, retfa
eht tfard dezilanif yb eht sdohteM fo lacimehC sisylanA fo suorreF-noN Metals lanoitceS
eettimmoC had neeb devorppa yb eht lacigrullateM gnireenignE noisiviD .licnuoC
SI 2600 was tsrif dehsilbup ni 1964. tI srevoc eht sdohtem rof noitanimreted fo ,reppoc ,nit
,nori ,muinimula ,muisengam muimdac and dael ni hgih ytirup cniz and cniz esab syolla rof eid
castings. ehT eettimmoC dediced ot esiver this standard otni parts, hcihw no noitacilbup dluow
edesrepus eht noitanimreted fo that tnemele nevig ni SI 2600 : 1964. gniruD this noisiver eht
dohtem rof noitanimreted fo ,lekcin ,muillaht muidni and muimorhc ni cniz and cniz esab yolla
castings has neeb .dedda
sihT standard ( traP 4 ) srevoc eht dohtem rof noitanimreted fo muimorhc yb cirtemotohportceps
.dohtem ehT rehto parts fo eht seires era as :swollof
SI 2600 sdohteM fo lacimehc sisylana fo cniz and cniz esab syolla rof eid castings:
traP 1 noitanTo;;;)E fo ,reppoc ,nori ,lekcin nit and muillaht yb cirtemotohportceps
traP 2 noitanimreteD fo ,reppoc ,nori dael and muimdac yb cimota noitprosba -ortceps
cirtem dohtem
traP 3 noitanimreteD fo muidni yb cimota noitprosba cirtemortceps dohtem
traP 5 noitanimreteD fo muinimula and muisengam yb cimota noitprosba cirtemortceps
dohtem
nI gnitroper eht tluser fo a tset ro sisylana edam ni ecnadrocca htiw this standard, fi eht lanif

,eulav devresbo ro ,detaluclac is ot eb dednuor ,ffo ti shall eb enod ni ecnadrocca htiw

SI 2 : 1960 seluR‘ rof gnidnuor ffo laciremun seulav ( revised )‘.
IS 2600 ( Part 4 ) : 1993
Indian Standard
SDOHTEM FO LACIMEHC SISYLANA FO
CNIZ DNA CNIZ ESAB SYOLLA ROF
EID SGNITSAC
PART 4 DETERMINATION OF CHROMIUM BY SPECTROPHOTOMETRIC METHOD
First Revision
( )
1 SCOPE 5.2 Reagents
sihT standard ( traP 4 ) sebircsed eht dohtem 5.2.1 Dilute SuIphuric Acid, I : 4 (v/v )
rof noitanimreted fo muimorhc up ot 0.02
.tnecrep 5.2.2 Nitric Acid, dr = 1.42 ( gnimrofnoC ot
SI 264
: 1976 ).
2 REFERENCES
5.2.3
Potassium Permanganate Solution, 0.1 N
ehT gniwollof naidnI Standards era yrassecen
stcnujda ot this standard: .tnecrep
5.2.4 Sodium Azide Solution, 0.5
SI .oN Title 5.2.5 tnecrep
Diphenyl Carbazide Solution, 0.25
ni .enoteca
264 : 1976 cirtiN dica ( dnoces revision )
1817 : 1961 sdohteM fo sampling -non
5.2.6 1 lm =
suorref slatem rof lacimehc Standard Chromium Solution (
OOO*O 1 g Cr )
sisylana
1070 : 1992 tnegaeR edarg retaw ( third evlossiD 0.025 g fo erup muimorhc ni 10 lm fo
etulid ciruhplus dica ( 1 : .)4 Add a wef spord
revision )
fo cirtin dica retfa noitelpmoc fo .noitcaer
emuF tuo eht cirtin .dica looC and ekam up ot
3 SAMPLING
250 .lm
elpmaS shall eb drawn and deraperp ni -rocca
ecnad htiw eht erudecorp laid nwod ni 5.2.6.1 Standard chromium solution ( 1 lm =
SI 1817 : 1961. 10 gLt Cr )
4 QUALITY OF REAGENTS evlossiD 10 lm fo standard muimorhc noitulos
( 5.2.6 ) ni 100 lm fo .retaw
Unless deificeps ,esiwrehto lacitylana edarg
stnegaer and dellitsid retaw ( ees SI 1070 : 1992 )
5.2.6.2 1 lm =
shall eb deyolpme ni eht .tset Standard chromium solution (
1 pg Cr )
5 DETERMJNATION OF CHROMIUM BY evlossiD 10 lm fo standard muimorhc noitulos
SPECTROPHOTOMETRIC METHOD ( ni 100 lm fo .retaw
5.2.6.1 )
5.1 Outline of the Method
5.3 Procedure
ehT elpmas is devlossid ni etulid ciruhplus dica
and a wef spord fo cirtin dica and dewolla ot 5.3.1 hgieW yletarucca 2.0 g fo eht .elpmas
.emuf tI is neht detulid htiw dellitsid retaw evlossiD ni etulid ciruhplus dica ( 1 : .)4 Add
and deliob ot evlossid salts. muimorhC is wef,a spord fo cirtin .dica ekaT ot .semuf
dezidixo htiw etulid muissatop etanagnamrep etuliD htiw retaw and .liob Add muissatop
,noitulos ssecxe fo hcihw is devomer htiw etanagnamrep noitulos ( 0.1 N ) pord yb pord
muidos .ediza An touqila fo this noitulos is llit a knip ruoloc persists. eunitnoC ot liob rof
detaert htiw lynehpid edizabrac and eht -rosba 10 .setunim ekaM erus that eht knip ruoloc
ecnab derusaem at 540 .mn persists gnirud .gniliob
.IS 2600 ( Part 4 ) : 1993
oT the gniliob noitulos add muidos ediza debircsed ni 5.3.1. Note the ecnabrosba of each
noitulos ( 0.5 tnecrep ) drop yb drop llit the noitulos itna draw a noitarbilac evruc htiw
etanagnamrep ruoloc sraeppasid .yletelpmoc smargillim of muimorhc dna .ecnabrosba
diovA excess of the .ediza looC dna ekam
pu ot 100 .lm ,retliF fi dednepsus selcitrap 5.4 noitaluclaC
are .tneserp ekaT 20 lm of the raelc edam pu
.noitulos ddA 1 ot 2 lm of lynehpid edizabrac trevnoC the cirtemotohportceps gnidaer of the
noitulos dna ekam pu ot 25 .lm erusaeM the elpmas otni smargillim of muimorhc morf the
ecnabrosba at 540 .mn noitarbilac evruc dna etaluclac the egatnecrep
of muimorhc as :swollof
5.3.2 Blank
4A
yrraC tuo a knalb noitanimreted gnisu emas ,muimorhC tnecrep yb mass = ___ x 100
tnuoma of stnegaer dna gniwollof the erudecorp m
as deificeps ni 5.3.1 tub tuohtiw the .elpmas
where
5.3.3 noitarbilaC
M = ,ssam ni ,gm of muimorhc ;dnuof dna
ekaT 0, 1, 2, 3 dna 4 lm of the dradnats
muimorhc noitulos ( 5.2.6.2 ) dna proceed as m = ,ssam ni ,gm of the elpmas .nekat
Standard Mark
ehT esu fo eht dradnatS Mark is denrevog yb eht snoisivorp fo eht
Bureau of Indian
and eht seluR and snoitalugeR edam .rednuereht ehT dradnatS Mark
Standards Act, 1986
no stcudorp derevoc yb an naidnI dradnatS syevnoc eht ecnarussa that yeht evah neeb
decudorp ot ylpmoc htiw eht stnemeriuqer fo that standard rednu a llew denifed metsys
fo ,noitcepsni gnitset and ytilauq lortnoc hcihw is desived and desivrepus yb SIB and
detarepo yb eht .recudorp dradnatS dekram stcudorp era osla ylsuounitnoc dekcehc yb
SIB rof ytimrofnoc ot that standard as a rehtruf .draugefas sliateD fo snoitidnoc rednu
hcihw a ecnecil rof eht esu fo eht dradnatS Mark yam eb detnarg ot srerutcafunam ro
srecudorp yam eb deniatbo morf eht uaeruB fo naidnI Standards.
Bureau of Indian Standards
SIB si a yrotutats noitutitsni dehsilbatse rednu the uaeruB of naidnI Standards Act, 1986 to
etomorp suoinomrah tnempoleved of the seitivitca of ,noitazidradnats gnikram dna ytilauq
noitacifitrec of goods dna gnidnetta ot detcennoc srettam ni the .yrtnuoc
Copyright
BIS has the thgirypoc of lla sti .snortacilbup No part of these snoitacilbup yam eb decudorper
ni yna mrof tuohtiw the roirp noissimrep ni gnitirw of .SIB sihT does ton edulcerp the free ,esu
ni the esruoc of gnitnemelpmi the ,dradnats of yrassecen ,sliated hcus as slobmys dna ,sezis epyt
or grade .snoitangised seiriuqnE gnitaler ot thgirypoc eb addressed ot the rotceriD
( snoitacilbuP ), .SIB
noisiveR of Indian Standards
stnemdnemA are deussi ot sdradnats as the deen sesira no the sisab of .stnemmoc sdradnatS
are osla dev,tiver ;yllacidoirep a dradnats gnola htiw stnemdnema si demriffaer nehw hcus weiver
setacidni that on segnahc are ;dedeen fi the weiver setacidni that segnahc are ,dedeen ti si nekat
pu for ,noisiver sresU of naidnI sdradnatS dluohs niatrecsa that yeht are ni noissessop of the
tsetal stnemdnema or noitide yb gnirrefer ot the tsetal eussi of ‘BLS .koobdnaH dna sdradnatS‘
ylhtnoM .’snoit-iddA stnemmoC no siht naidnI dradnatS yam eb tnes ot SIB gnivig the gniwollof
:ecnerefer
Dot : No DTM 28 ( 3779 )
Amendments issued Since Publication
dnemA No. Date of eussI Text Affected
UAERUB FO NAIDNI SDRADNATS
:sretrauqdaeH

kanaM ,navahB 9 rudahaB Shah rafaZ Marg, New ihleD 110002

senohpeleT : 331 IO 31, 331 13 75 smargeleT : ahtsnaskanaM
( nommoC ot lla seciffO )
lanoigeR seciffO : enohpeleT
lartneC : kanaM ,navahB 9 rudahaB Shah rafaZ Marg r 331 01 31
WEN IHLED 110002 331 13 75
nretsaE : 4l/l .C .I .T emehcS IIV M, V. 1. .P Road, alotkinaM 378499, 378561
ATTUCLAC 700054 37 86 26, 37 86 62
53 38 43, 53 16 40
nrehtroN SC0 445-446, Sector 35-C, CHANDIGARH 160036
53 23 84
235 02 16, 235 04 42
nrehtuoS C. I. T. Campus, IV Cross Road, SARDAM 600113
235 15 19, 235 23 15
nretseW ,ayalakanaM E9 ,CDIM ,loraM irehdnA ( East ) 632 92 95, 632 78 58
YABMOB 400093 632 78 91, 632 78 92
sehcnarB .DABADAMHA .EROLAGNAB .LAPOHB .RAWHSENABUHB .EROTABMIOC
.DABADIRAF .DABAIZAHG .ITAHAWUG .DABAREDYH .RUPIAJ .RUPNAK
.WONKCUL .ANTAP .MARUPAHTNANAVURIHT

detnirP at Printwell Printers. Aliearh, India