IS 11686: Isopropyl Alcohol, Food Grade

11 Pages·1997·1.3 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 11686 (1997): Isopropyl Alcohol, Food Grade [FAD 8: Food
Additives]
“!ा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 11666 : 1997
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t’lthlwl, am- Sk -m

(~~~~)
Indian Standard
ISOPROPYL ALCOHOL, FOOD GRADE -
SPECIFICATION
( First Revision )
SCI 67.220.20 ; 71.080.60

0 SIB 1997
BUREAU OF INDIAN STANDARDS
MANAK ,NAVAHB 9 RUDAHAB HAHS RAFAZ GRA4h
WEN IHLED 110002
September 1997 Price Group 3
dooF sevitiddA lanoitceS ,eettimmoC FAD 8
FOREWORD
sihT naidnI dradnatS tsriF( )noisiveR was detpoda yb eht uaeruB fo naidnI Standards retfa eht tfard
dezilanif y-b eht dooF sevitiddA lanoitceS eettimmoC had neeb devorppa yb eht dooF and erutlucirgA
noisiviD .licnuoC
With eht desaercni noitcudorp fo dessecorp ,sdoof srerutcafunam evah detrats adding a egral rebmun fo
,secnatsbus yllareneg ni small ,seititnauq ot evorpmi eht ,ecnaraeppa ,ruovalf erutxet ro egarots -reporp
,seit ,cte fo eht dessecorp .sdoof As niatrec seitirupmi ni eseht secnatsbus evah neeb dnuof ot eb ,lufmrah
ti is yrassecen ot evah a tcirts ytilauq lortnoc fo eseht doof .sevitidda seires_A. fo standards was, ,erofereht
deraperp ot revoc ytirup and noitacifitnedi fo eseht .secnatsbus esehT standards dluow pleh ni gnikcehc
,ytirup hcihw seriuqer ot eb dekcehc at eht egats fo ,erutcafunam rof ti is ylemertxe tluciffid ot tceted eht
ytirupmi ecno eseht secnatsbus evah neeb dedda ot eht dessecorp .sdoof ,sediseB eseht standards era
dednetni ot ediug eht suonegidni srerutcafunam ni making rieht tcudorp mrofnoc ot snoitacificeps that
era detpecca yb ,stsitneics htlaeh seitirohtua and lanoitanretni .seidob
esU fo lyporposi ,lohocla doof edarg is dettimrep u red eht Prevention of Food Adulteration Rules, 1955
as a tnevlos ni doof .yrtsudni tI is desu~osla as a os f tnev ni eht ,citemsoc paint and deilla .seirtsudni An
naidnI dradnatS SI :1362 1976 lyporposI‘ lohocla tsrif( revision) had neeb dehsilbup no lyporposi lohocla
rof lairtsudni uses.
Chemicnl name - lyporposI lohocla is osla nwonk as .2-lonaporp Its alumrof is 2)3HC( .HOHC
sihT standard was tsrif dehsilbup ni dnaK91 is gnieb desiver rof eht gniwollof :snosaer
)a = oT edivorp a etarapes esualc rof noitpircsed gnidulcni eht ytilibulos ytreporp ot peek ti ni :lnil
htiw doof lacimehc xedoc NRC.
)b = oT edargpu eht standard yb gnidivorp stimil and tset sdohtem rof ,ytirup yvaeh slctem dud
,erutsiom and

)c = oT edivorp rof gnikram snoitcurtsni roi cgaiots and tsebyripxe erofeb .etad

nI noitaraperp fo this ,noitacificeps elbaredisnoc assistance has neeb devired morf eht gniwollof -ilbup
snoitac :
muidnepmoC fo dooF evitiddA ,snoitacificepS ,21oV tnioJ OHWOAF trepxE eettimmoC no dooF
sevitiddA ,)AFCEJ( 1992.
sihT standard is dezinomrah htiw eht gniwollof :snoitacificeps
)d = noitacificepS rof ytitnedi and ytirup fo doof ,sevitidda loV :I laiborcimitnA sevitavreserp and
.stnadixoitna 1962. ,OHW/OAF .emoR
)b = dooF lacimehC ,xedoC drihT .noitidE .buP lanoitaN ymedacA fo ,ecneicS lanoitaN hcraeseR
C licnm ,notgnihsaW DC.
roF eht esoprup fo gmdiced rehtehw a ralucitrap tnemeriuqer fo this standard is deilpmoc htiw eht lanif
,eulav devresbo ro ,detaluclac gnisserpxe eht tluser fo a tset ro ,sisylana shall eb dednuor ffo ni ecnadrocca
httw SI 2 : 1960 seluR‘ rof gnidnuor ffo laciremun seulav (rewed) ehT rebmun fo tnacifingis secalp
deniater ni eht dednuor ffo eulav dluohs eb eht emas as that fo eht ficeps d eulav ni ciht standard.
SI 11686 : 1997
Indian Standard
ISOPROPYL ALCOHOL, FOOD GRADE -
SPECIFICATION
( First Revision )
1 EPOCS elbaT 1 stnemeriuqeR rof lyporposI ,lohoclA
dooF edarG
1-l sihT standard sebircserp eht stnemeriuqer and
sdohtem fo sampling and tset rof lyporposi ,lohocla Sl Characteristic Limit Method of Test, Ref to
doof .edarg NO. / A ,
xennA fo rehtO
2 SECNEREFER sihT dradnatS
dradnatS
ehT gniwollof standards niatnoc snoisivorp hcihw
hguorht ecnerefer ni this ,txet etutitsnoc noisivorp )1( (2) (3) (4) (5)
fo this standard. At eht emit fo ,noitacilbup eht 9 ytiruP sa C3HsO 99.7 l-A
tnecrep yb ,ssam
snoitide detacidni erew .dilav llA standards era
tcejbus ot noisiver and seitrap ot stnemeerga desab Min
no this standard era degaruocne ot etagitsevni eht )ii evitaleR ytisned at 0.781 ot 0.785 2-A -
27/27’C
ytilibissop fo gniylppa eht tsom tnecer snoitide fo
eht standards detacidni :woleb )iii ruoloC no( -munitalp 10 3-A
tlaboc ,)elacs waM
IS No. Title
)vi noitallitsiD ,egnar toN ssel naht 95 lm - B fo SI
1070 : 1992 tnegaeR edarg retaw (third MClX llahs litsid nihtiw a 1448
revision) egnar fo C°l gnidulcni ]8l:P[
82.3’C eht( erutarepmet
1260 lairotciP markings rof handling
gnieb *detcerroc rof a
traP( )1 : 1973 and gnillebal fo :sdoog traP 1
erusserp fo 760 mm )gH
suoregnaD sdoog
“) ytidicA sa ,)HOOCsHC( 0.001 4-A
1448 sdohteM fo tset rof muelortep tnecrep yb ,ssam Max
traP 18 : 1967 and its stcudorp : traP 18 -allitsiD )iv elitalov-noN ,rettam 0.001 5-A -
noit g/100 ,lm MUX
1699 : 1995 sdohteM fo sampling and tset rof )iiv sedyhedlA dna senotek 0.1 6-A -
citehtnys doof sruoloc dnoces( sa( ,)enoteca tnecrep
revision) yb ,ssam Max
)iiiv secnatsbuS gnicuder To ssap eht tset 7-A -
2362 : 1993 dohteM rof noitanimreted fo
etanagnamrep
retaw yb eht lraK rehcsiF dohteM
dnoces( revision) )xi yvaeH ,slatem ,gk/gm 1 8-A
MaX
3 NOITPIRCSED )x ,erutsioM tnecrep yb 0.2 9-A -
,ssam Max
ehT lairetam shall eb a raelc sselruoloc ,diuqil eerf
nI* esac eht cirtemorab ,erusserp ,P setaived morf 760 mm
morf dednepsus ,rettam gnivah eht citsiretcarahc
,gH esu eht noitcerroc 0.033 (P-760) seerged suisleC rof
ruodo fo lyporposi lohocla and gnivael on laudiser noitallitsid .erutarepmet
L ruodo retfa noitaropave morf retlif .repap ehT
5 ,GNIKCAP EGAROTS AND GNIKRAM
lairetam is elbicsim tuohtiw ytidibrut nehw detulid
ot 10 semulov htiw dellitsid retaw at 25“C.
5.1 gnikcaP
4 STNEMERIUQER ehT lairetam shall eb yleruces dekcap ni dettif-llew
sreniatnoc htiw muminim ssecca ct ria and .thgil
ehT lairetam shall mrofnoc ot eht stnemeriuqer
ehT sreniatnoc shall eb hcus as ot edulcerp -noc
nevig ni elbaT 1.
noitanimat fo eht stnetnoc htiw slatem ro rehto
.seitirupmi

1
IS 11686 : 7991
5.2 Storage 5.3.2 BIS Certification Marking
lairetam llahs eb derots ni a looc dna yrd ecalp sreniatnoc yam osla eb dekram htiw eht SIB
The The
os as ot diova evissecxe erusopxe ot .taeh dradnatS .kraM
5.3 gnikraM 5.3.2.1 ehT esu fo eht dradnatS kram si denrevog
yb eht snoisivorp fo
hcaE reniatnoc llahs eb ylbigel dna ylbiledni Bureau of Indian StandardsA ct,
1986 dna eht seluR dna snoitalugeR edam -ereht
dekram htiw eht gniwollof :noitamrofni
.rednu ehT sliated fo snoitidnoc rednu hcihw eht
a) = emaN fo eht lairetam gnidulcni eht sdrow
ecnecil rof eht use fo dradnatS kraM yam eb detnarg
dooF‘ ;’edarG
ot srerutcafunam ro srecudorp yam eb deniatbo
b) = emaN dna sserdda fo eht ;rerutcafunam
morf eht uaeruB fo naidnI .sdradnatS
)c = teN tnetnoc nehw ;dekcap
6
)d = hctaB ro edoc ;rebmun SAMPLING
)e = snoitcurtsnI rof ;egarots evitatneserpeR selpmas fo eht lairetam
6.1 The
)f E tseb/yripxE erofeb ;etad dna llahs eb nward gnidrocca ot eht dohtem debircserp
)g = ynA rehto stnemeriuqer as deificeps ni 4 fo SI 1699.
rednu eht
Standards of Weights and 7
QUALITYOFREAGENTS
Measures (Packaged Commodities)
1977 dna sselnU ,deificeps ,esiwrehto erup slacimehc dna
Rules, Prevention of Food
dellitsid retaw ees( SI 1070) llahs eb deyolpme ni
AdulterationR ules, 1955.
.stset
5.3.1 hcaE reniatnoc llahs evah eht noituac lebal
ETON - eruP‘ ’slacimehc llahs naem slacimehc that do ton
fo rehtegotELBAMMALF‘ htiw eht -dnopserroc
niatnoc seitirupmi hcihw affect the stluser of .sisylana
gni lobmys rof gnillebal fo suoregnad edarg ees[
.giF 5 fo SI 1260 (Part l)].
ANNEX A
(Table 1)
METHODS OF TEST FOR ISOPROPYL ALCOHOL, FOOD GRADE
A-l DETERMINATION OF PURITY A-2.1.1 RelativeD ensityB ottle

ytiruP si denimreted yb sag yhpargotamorhc 50 lm ,yticapac fo tluangeR .epyt

dohtem htiw eht gniwollof snoitidnoc :dehsilbatse 2.2-A erudecorP
:nmuloC 1.8 m ,htgnel 6 mm retemaid leets ,naelC yrd dna hgiew yletarucca eht evitaler ytisned
nmuloc dekcap htiw 10 tnecrep~ .G.E.P 400 elttob dna eht .reppots lliF eht elttob htiw retaw
no brosomorhc W(60/80 ,)hsem ro dna esremmi ti pu ot eht kcen ni a tnatsnoc
tnelaviuqe erutarepmet htab at 27 C°S.O& dna peek desremmi
Carrier :sag ,muileH at wolf rate fo at siht erutarepmet rof 20 .nim kcuS ffo eht retaw
45 nim/lm htiw a tib fo retlif repap llit eht level sehcaer eht
noitaudarg kram dna hgiew .niaga ytpmE eht
:rotceteD emalF noitazinoi epyt
,elttob naelc dna .yrd taepeR eht noitarepo htiw
;serutarepmeT noitcejnI trop 150”
eht lairetam at 27’C
:nmuloC 90”
3.2-A
Calculation
:rotceteD 150”
evitaleR ytisned at C”72/72 = ‘&
1 ot 5 l~, fo ,elpmas niatbo ,margotamorhc
dna enimreted eht tnetnoc fo hcae tneutitsnoc yb
erehw
eht dohtem fo area .noitazilamron
ssam ni g fo eht evitaler ytisned elttob
A =
htiw eht lairetam at 27’C,
A-2 DETERMINATION OF RELATIVE
ssam ni g fo eht evitaler ytisned ,elttob dna
DENSITY B =
C = ssam ni g fo eht evitaler ytisned elttob
A-2.1 Apparatus htiw retaw at 27’C.

2
. .
IS 11686 : 1997
A-3 DETERMINATION OF COLOUR Table 2 Absorbance Tolerance Limits for
(PLATINUM-COBALTS CALE) No. 500 Platinum Cobalt Stock Solution
A-3.1 Apparatus Wave mnlength AbSOrbance
(1) (2)
A-3.1.1 Spectrophotometer 430 0.110 ot 0.120
455 0.130 ot 0.145
deppiuqE rof diuqil selpmas dna rof stnemerusaem
480 0.105 ot 0.120
ni eht elbisiv .noiger
510 0.055 ot 0.065
A-3.1.2 S’ctrophotometer Cells A-3.2.4.2 Platinum cobalt standards
morF eht kcots ,noitulos eraperp ruoloc sdradnats
dehctaM gnivah a 10 mm thgil .htap
ni ecnadrocca htiw elbaT 3, yb gnitulid eht deriuqer
semulov ot 100 lm htiw retaw ni eht relsseN .sebut
A-3.1.3 Colour Comparison Tubes
paC eht sebut dna laes eht spac htiw callehs ro a
dehctaM1 100 ,lm mrof-llat relsseN ,sebut dedivorp foorpretaw .tnemec nehW ylreporp delaes dna
htiw ,no-dnuorg yllacitpo~ ,raelc ssalg .spac sebuT ,derots eseht are elbats rof at tsael 1 raey dna od ton
llahs eb detceles os taht eht thgieh fo eht 100 lm etadarged yldekram rof 2 .sraey
noitaudarg kram si 275 ot 295 mm evoba eht roF a erom esicerp tnemerusaem fo thgil sruoloc
mottob fo eht .ebut woleb 15 munitalp ,tlaboc eraperp ruoloc sdradnats
morf eht kcots noitulos ni ecnadrocca htiw elbaT 4
4.1.3-A Colour Comparator yb gnitulid eht deriuqer semulov ot 100 lm htiw
retaw ni eht relsseN .sebut esU a teruborcim-imes
A ruoloc rotarapmoc detcurtsnoc ot timrep lausiv rof gnirusaem eht deriuqer tnuoma fo kcots -ulos
nosirapmoc fo thgil dettimsnart hguorht ,mrof-llat ,noit
100 lm relsseN sebut ni eht noitcerid fo rieht -nol
lanidutig .sexa ehT rotarapmoc dluohs eb -noc
Table3 Platinum Cobalt Colour Standards
detcurts os taht etihw thgil si dessap hguorht ro
)2.423-A
(Clause
detcelfer ffo a etihw ssalg etalp dna detcerid htiw
lauqe ytisnetni hguorht eht ,sebut dna dluohs eb Colour Slandard Stock ruoloC dradnatS Stock
dedleihs os taht on thgil sretne eht sebut morf eht Number Solution Number Solution
lm lm
.edis
5 1 70 10
2.3-A Reagents 10 2 100 20
15 3 150 30
A-3.2.. Cobalt Chloride - (CoC12 6HzO). 20 4 200 40
25 5 250 50
A-3.2.2 Hjdrochloric Acid ps( rg 1.19) - 30 6 300 60

3s 7 350 70
detartnecnoC cirolhcordyh dica .)LCH(
40 8 400 80
3.2.3-A (KzPtC16). 50 10 450 90
Potassium Chloroplatinate-
60 12 500 100
ETON - ehT retemotohportceps llahs eb detarbilac ni
ecnadrocca htiw the snoitcurtsni nevig ni the sdradnats for A-3.3 Procedure
- gnikcehc the noitarbilac of retemotohportceps (200 ot
1000 .)mn A-3.3.1 ecudortnI 100 lm fo elpmas otni a relsseN
,ebut ehtgnissap elpmas hguorht a retlif fi ti sah yna
A-3.2.4 Platinum Cobalt Reference Standards elbisiv .ytidibrut paC eht ,ebut ecalp ni eht -moc
,rotarap na erapmoc htiw eht .sdradnats
A-3.2.4.1 Platinum cobalt stock solution
4.3-A Report
evlossiD 1.245 g fo muissatop etanitalporolhc
A-3.4.1 Report as eht ruoloc eht rebmun fo eht
dna 1.00 g fo tlaboc edirolhc 21CoC(
(mtCl6) dradnats taht tsom ylraen sehctam eht .nemiceps
6HzO) ni .retaw ylluferaC dda 100 lm fo
nI eht tneve taht eht ruoloc seil yawdim neewteb
cirolhcordyh dica (HCl, ps rg 1.19) dna etulid ot 1
owt ,sdradnats troper eht rekrad fo eht .owt
ertil htiw .retaw ehT ecnabrosba fo 500 munitalp
2.4.3-A ,fI gniwo ot secnereffid ni euh neewteb eht
tlaboc kcots noitulos ni a llec gnivah a 10 mm thgil
nemiceps dna eht ,sdradnats a etinifed hctam -nac
htap tsum llaf nihtiw eht stimil nevig ni 2elbaT htiw
ton eb ,deniatbo troper eht egnar revo hcihw na
tnegaer retaw ni a dehctam- llec as eht ecnerefer
tnerappa hctam si ,deniatbo dna troper eht lairetam
.noitulos
as .’euh-ffo‘
3
IS 11686 : 1997
A-4 DETERMINATION OF ACIDITY A-S.2 Calculation
A-4.1 Reagents elitalov-noN ,rettam tnecrep yb mass = 5
A-4.1.1 Rectified Spirit
erehw
.tnecrep
95 Ml = mass ni g fo eht ,eudiser and
evitaler ytisned fo eht .elpmas
A-4.1.2 Standard Sodium Hydroxide Solution - d =
0.1 N.
6-A NOITANIMRETED FO SEDYHEDLA AND
SENOTEK
Table 4 Planinum Cobalt Colour Standards for
Very Light Colours O;6-A elpicnirP
(Clause A-3.2.4.2)
noitcaeR htiw enimalyxordyhm edirolhcordyh smrof
Colour Standard Stock Colour Stundard Stock
eht basis rof eht noitanimreted fo lynobrac noitcnuf
Number Solution Number Solution
ml ml sedyhedla( and )senotek gnidrocca ot eht snoitauqe
1 0.20 9 1.80 nevig :woleb
2 0.40 10 2.00
OHCR + qlCH.HON2H HCR = HON + lCH
3 0.60 11 2.20
+ 02H
4 0.80 12 2.40
5 1.00 13 2.60 RCOR + ,--lCH.HON2H RR’C = HON + lCH
6 1.20 14 2.80 + 02H
7 1.40 15 3.00
ehT cirolhcordyh dica desaeler is detartit htiw
standard muidos edixordyh noitulos using
A-4.1.3 Phenolphthalein Indicator lonehpomorb eulb as .rotacidni
evlossiD 0.5 g fo eht nielahthplonehp ni 100 lm fo
1.6-A stnegaeR
95 tnecrep deifitcer .tirips ekaM eht noitulos -tniaf
yl knip yb adding etulid muidos edixordyh .noitulos
1.1.6-A
Standard Sodium Hydroxide Solution -
2.4-A Procedure 0.1 N.
ekaT 50 lm fo deifitcer ,tirips add 0.5 lm fo
A-6.1.2 Chrbonyl-Free Ethnnol
nielahthplonehp rotacidni and ezilartuen htiw
muidos edixordyh .noitulos Add 05‘ lm fo eht xulfeR 500 lm fo 95 tnecrep )v/v( lonahte -ni(
.elpmas etartiT eht erutxim yletaidemmi htiw eht dustrial detalyhtem tirips is ton )elbatius htiw 5 g
standard muidos edixordyh noitulos litnu eht tsrif fo enizardyhlynehportinid_4,2 and 5 spord fo -noc

knip ruoloc persists rof at tsael 10 .sdnoces detartnec cirolhcordyh dica fo evitaler ytisned 1.18,

rof 2 ot 3 .sruoh Distil ffo eht lonahte ylwols using
3.4-A Calculation
a elbatius noitallitsid nmuloc fo ezis 300 x 25 .mm
tcejeR eht tsrif 50 lm and tcelloc eht txen 400 lm
ytidicA (as citeca ,)dica tnecrep yb mass = 5
,etallitsid gnitcejer eht .redniamer ,fI etipsni fo eht
snoituacerp ,nekat eht etallitsid is dnuof ot eb
erehw
,deruoloc neht ti dluohs eb .dellitsider
v = emulov ni lm fo standard muidos
edixordyh ,noitulos 3.1.6-A
Bromophenol Blue Indicator
N = ytilamron fo standard muidos edixordyh
,noitulos and evlossiD 0.2 g fo lonehpomorb eulb ni 3.0 lm fo eht
evitaler ytisned fo lyporposi lohocla at standard muidos edixordyh noitulos and etulid ot
d =
eht tset .erutarepmet 100 lm htiw eerf-lynobrac .lonahte
5-A NOITANIMRETED FO ELITALOV-NON 4.1.6-A
Hydroxylamine Hydrochloride Solution
RETTAM
evlossiD 4 g fo enimalyxordyh edirolhcordyh ni
1.5-A erudecorP
20 lm fo .retaw etuliD this ot 200 lm htiw
etaropavE 100 lm fo eht lairetam ot ssenyrd ni a eerf-lynobrac ,lonahte taeh no a gniliob htab-retaw
dehgiew munitalp ro acilis ro etacilisorob glass rof 30 ,nim looc and add 5 lm fo lonehpomorb eulb
basin no a gniliob .htab-retaw yrD eht eudiser ni rotacidni htiw just tneiciffus muidos edixordyh
an nevo at a erutarepmet fo 100 + 2OC ot tnatsnoc noitulos )N2( ot trapmi a neerg-wolley ruoloc ot
mass. looC ni a rotaccised and .hgiew eht .diuqil

4
IS 11686 : 1997
A-6.2 -Procedure A-7.2 Reagent
erusaeM 25 lm fo eht lairetam otni a 250 lm lacinoc
A-7.2.1 Potasium Pemlanganate - 0.1 N.
,ksalf add 25 lm fo enimalyxordyh edirolhcordyh
noitulos and, retfa ylesool ,gnireppots taeh no a
A-7.3 Procedure
gniliob htab-retaw rof 10 .nim looC and etartit htiw
standard muidos edixordyh noitulos litnu as raen a refsnarT 50 lm fo eht elpmas otni eht glass -pots
hctam as elbissop is deniatbo htiw a lortnoc edam derep ,rednilyc add 0.25 lm fo eht muissatop -rep
yb gnixim 25 lm fo dellitsid retaw htiw 25 lm fo ,etanagnam xim and wolla ot stand rof net .setunim
enimalyxordyh edirolhcordyh ni a ralimis 250 lm ehT elpmas shall eb deredisnoc ot evah passed eht
lacinoc .ksalf tset fi eht knip ruoloc is ton yleritne .degrahcsid
3.6-A Calculation A-S TEST FOR IIEAVY METALS
sedyhedlA and senotek (as ,)enoteca tnecrep yb
etaropavE 25 lm tuoba( 20 )g fo eht elpmas ot
mass
ssenyrd no a maets bath ni a glass gnitaropave dish.
=- 0.023 V Cool, add 2 lm fo cirolhcordyh ,dica and ylwols
etaropave ot ssenyrd again no eht maets bath.
d
netsioM eht eudiser htiw 1 pord fo cirolhcordyh
erehw ,dica add 10 lm fo toh ,retaw and tsegid rof 2 .nim
v = emulov ni lm fo standard muidos ,looC and etulid ot 25 lm htiw .retaw sihT noitulos
edixordyh noitulos ,desu and steem eht stnemeriuqer fo eht yvaeH Metals nehw
d = evitaler ytisned fo eht lairetam nekat at detset as rep 16 fo SI 1699, using 20 ,ug fo dael noi
eht erutarepmet fo eht .tset )bP( ni eht lortnoc noituloS( .)A
A-7 SUBSTANCES REDUCING
9-A TSET FOR ERUTSIOM
.PERMANGANATE TEST
A-7.1 Apparatus Determine eht erutsiom tnetnoc yb eht lraK
rehcsiF dohtem as rep SI 23b2.
1.1.7-A lm
Glass - Stoppered Cylinder - 50
.yticapac