IS 4751: Potassium Metabisulphite, Food Grade

10 Pages·1994·1.2 MB·English

by  Bureau of Indian Standards

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IS 4751 (1994): Potassium Metabisulphite, Food Grade [FAD
8: Food Additives]
“!ान $ एक न’ भारत का +नम-ण”
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“Knowledge is such a treasure which cannot be stolen”

IS4751 : 1994
4mwf qll~l&iT%l~‘Eflq- d, *-f$@@
(Q-g;rfferor)
Indian Standard
POTASSIUM METABISULPHITE, FOOD
GRADE - SPECIFICATION
( First Revision )
UDC 664.099.4 : 546.322.24

@ BIS 1994
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002

December 1994
PriceGroup 2
dooF sevitiddA lanoitceS ,eettimmoC FAD 8
FOREWORD
sihT naidnI dradnatS tsriF( )noisiveR was detpoda yb eht uaeruB fo naidnI Standards, retfa eht tfard
dezilanif yb eht dooF sevitiddA lanoitceS eettimmoC had neeb devorppa yb eht dooF and erutlucirgA
noisiviD .ficnuoC
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 seitreporp
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 A seires fo standards is, ,erofereht gnieb
deraperp yb this uaeruB ot revoc ytirup and noitacifitnedi fo eseht .secnatsbus tI is depoh that eseht
standards dluow pleh ni gnikcehc ytirup hcihw seriuqer ot eb dekcehc at eht egats fo ,erutcafunam rof ti
is ylemertxe tluciffid dna( ni ynam sesac )elbissopmi 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 noitacificeps that era detpecca yb ,stsitneics htlaeh
seitirohtua and lanoitanretni .seidob
muissatoP etihplusibatein ylediw desu as doof ,evitavreserp is dettimrep rednu eht noitneverP dooF@
Adulteration Rules, 1955, as llew as Fruit Products Order, 19.55.
Chemical Names and Formula -The dezingocer lacimehc seman era muissatop etihplusibatem and
muissatop .etihplusoryp lacimehC alumrof .5OzSzK Its ralucelom thgiew is 222.23.
sihT standard was tsrif dehsilbup ni 1968. tI is gnieb desiver ot ekat otni noitaredisnoc eht stnemeriuqer
nevig ni eht gniwollof lanoitanretnI as llew as CEE Standards.
FAO dooF and noitirtuN repaP .oN 4 noitacificepS rof ytitnedi and ytirup gninekciht-fo ,stnega
gnikacitna ,stnega ,slaiborcimitna stnadixoitna and ;sreifislume dehsilbup yb eht tnioJ OHW/OAF
trepxE eettimmoC no dooF ,sevitiddA emoR 1978.

dooF lacimehC ,xedoC 1981 .buP lanoitaN ymedacA fo ,secneicS and lanoitaN hcraeseR ,licnuoC
notgnihsaW DC, USA
licnuoC evitceriD CEE/66/56 fo 26 yraunaJ 1965 gniyal nwod cificeps airetirc fo ytirup rof -reserp
sevitav dezirohtua rof esu ni sffutsdoof dednetni rof human .noitpmusnoc
nI this ,noisiver ytilibulos has neeb thguorb rednu noitpircsed and as nevig rednu etoN fo 3.1, ti is dednetni
ylno as noitamrofni gnidrager etamixorppa ytilibulos and is ton ot eb deredisnoc as a ytilauq .tnemeriuqer
ehT timil fo etahplusoiht and nori evah neeb edam erom tnegnirts and eht tnemeriuqer rof dael has neeb
detutitsbus yb yvaeh .slatem
An naidnI dradnatS no muissatop ,etihplusibatem cihpargotohp edarg SI( 500 : )0891 has osla neeb
dehsilbup yb eht .uaeruB
roF eht esoprup fo gnidiced 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
htiw SI 2 : 1960 seluR‘ rof gnidnuor ffo laciremun seulav (revised)‘. The rebmun fo tnacifingis secalp
deniater ni eht dednuor ffo eulav dluohs eb eht emas as that fo eht deificeps eulav ni this standard.
SI :1574 4991
Indian Standard
POTASSIUM METABISULPHITE, FOOD
GRADE - SPkIFICATION
( First Revision )
1 EPOCS means of identification or determination of purity and de-
pendence must be placed on other specifications.
sihT dradnats sebircserp eht stnemeriuqer dna eht
3.2 noitacifitnedI tseT
dohtem fo gnilpmas dna tset rof muissatop
etihplusibatem rof esu as doof .evitavreserp 3.2.1 noituloS fo eht lairetam llahs eb cidica ot a
noitulos fo lonehp .der
2 SECNEREFER
3.2.2 noituloS fo eht lairetam llahs eziruoloced a
ehT gniwollof. naidnI sdradnatS are yrassecen -da
noitulos fo .enidoi
stcnuj ot siht :dradnats
IS No. Title 3.2.3 A tnecrep-ol noitulos fo eht lairetam llahs
265 : 1993 cirolhcordyH dica ( htruof evig a evitisop tset rof muissatop nevig ni 3.2.3.1
revEon ) dna evitisop tset rof ’etihplus‘ nevig ni 3.2.3.2.
1070 : 1992 tnegaeR edarg retaw ( third
3.2.3.1 Test rof muissatop
revision )
1699 : 1994 sdohteM fo gnilpmas dna tset rof nehW muidos bitartrate si dedda ot a lartuen -ol
doof sruoloc ( dnoces revisiori ) tnecrep noitulos fo eht ,lairetam a etihw etatipicerp
4447 : 1994 muidoS ,etaozneb doof edarg llahs eb .demrof sihT etatipicerp llahs eb elbulos ni
(Jim revision ) ainomma dna ni snoitulos fo ilakla sedixordyh ro
.setanobrac
STNEMERIUQER
3
3.2.3.2
3.1 noitpircseD Test for sulphite
nehW etulid cirolhcordyh dica si dedda ot a lartuen
ehT lairetam llahs eb etihw ro ,sselruoloc -eerf
tnecrep-ol noitulos fo eht ,lairetam ruhplus
gniwolf ,slatsyrc enillatsyrc redwop ro selunarg
edixoid llahs eb decudorp hcihw yam eb dezingocer
yllausu gnivah na ruodo fo ruhplus .edixoid tI si
yb sti citsiretcarahc .ruodo sihT sag llahs nekcalb
yllaudarg sezidixo ni air ot .etahplus ehT lairetam
eht retlif repap denetsiom htiw suorucrem .etartin
si elbulos ni retaw tub elbulosni ni .lonahte
NOTE - The solubility is intended only as information 3.3 ehT lairetam llahs osla mrofnoc ot eht -eriuqer
regarding approximate solubility and Is not to be considered stnem nevig ni elbaT 1.
as a quality requirement and is of minor significance as a
elbaT 1 stnemeriuqeR rof muissatoP etihplusibateM
SI clloracterisuc Requinment Method of Test,
NO.
Ref to
)1( )2(
(3) (4)
9 ,ytiruP sa ,502s2K 90 Annex A
percent by mass, Min
ii) Water insoluble matter, percent 50.0 Annex B
by mass, Max
iiIj Thiosulphate, percent 0.1 Annex C
by mass Mar
iv) Arsenic ( as As ), mgkg, Mar 3.0 15 of IS 1699 : 1994
v) Iron ( as Fe ), mpntg, Max 5 Annex D
vi) Selenium ( as Se ), 30 Annex E
mg/kg, Mar
vii) Heavy metals, mgkg, Max 10 Annex F
viii) PH Acidic to litmus -
1
IS 4751: 1994
,GNIKCAP EGAROTS AND GNIKRAM
4s 4.3.2 BIS Certijication Marking
4.1 gnikcaP ehT tcudorp yam osla eb dekram htiw eht dradnatS
Mark
ehT lairetam shall eb yleruces dekcap ni dellif-llew
reniatnoc htiw a muminim ssecca ot ria and .thgil 4.3.2.1 ehT esu fo eht dradnatS Mark is denrevog
ehT sreniatnoc shall eb hcus as ot edulcerp -noc yb eht snoisivorP fo eht uaeruB fo naidnI Standards
noitanimat fo eht stnetnoc htiw slatem ro rehto ,tcA 1986 and eht seluR and snoitalugeR edam
.seitirupmi .rednuereht ehT sliated fo snoitidnoc rednu hcihw
eht ecnecil rof eht esu fo dradnatS Mark yam eb
4.2 egarotS
detnarg ot srerutcafunam ro srecudorp yam eb
ehT lairetam shall eb derots ni a dnalooc yrd ecalp deniatbo morf eht uaeruB fo naidnI Standards.
os as ot diova evissecxe erusopxe ot .taeh
5 GNILPMAS
4.3
Marking
evitatneserpeR samples fo eht lairetam shall eb
hcaE reniatnoc shall eb ylbigel and ylbiledni drawn gnidrocca ot eht dohtem debircserp ni 4 fo
4.3.1
dekram htiw eht gniwollof :noitamrofni SI 1699 : 1994.
a) emaN fo eht ,lairetam gnidulcni eht sdrow
6 STSET
dooF‘ ;’edarG
6.1 stseT shall eb deirrac tuo yb eht sdohtem as
)b ecruoS fo ;erutcafunam
deificeps ni 3.2 and 1oc 4 fo elbaT 1.
9 etaD fo ;erutcafunam
)d muminiM ten ;stnetnoc 6.2 Quality of Reagents
e) hctaB ro edoc ;rebmun and Unless deificeps ,esiwrehto erup slacimehc and dis-
9 ynA rehto stnemeriuqer as nevig rednu dellit retaw ees( SI 1070 : )2991 shall eb deyolpme
eht Standards of Weights and Measures ni .stset
(Packaged Commodities) Rules, 19771 NOTE-‘Pure chemicals’ shall mean chemicals that do not
Prevention of FoodAdulteration Rules, 1955. contain impurities which affect the experimental results.
ANNEX A
[ Table 1, Item )i( ]
DETERMINATION OF PURITY
A-l REAGENTS suounitnoc gnirrits and .looc esU ylno eht raelc
.noitulos
0.1 N, ylhserf
A-l.1 Standard Iodine Solution -
.dezidradnats
2-A PROCEDURE
-noc
A-l.2 Concentrated Hydrochloric Acid -
hgieW yletarucca tuoba 0.25 g fo eht lairetam and
gnimrof ot SI 265 : 1993.
add ti ot yltcaxe 50 lm fo standard enidoi noitulos
3.l-A dradnatS muidoS etahplusoihT noituloS - deniatnoc ni a glass dereppots ksalf and reppots eht
0.1 N, ylhserf .dezidradnats .ksalf wollA ot stand rof 5 ,setunim add 1 lm fo
detartnecnoc cirolhcordyh dica and etartit eht -xe
4.l-A
Starch Solution ssec fo enidoi htiw standard muidos etahplusoiht
xiM 1 g fo hcrats and 10 gm fo der cirucrem edidoi ,noitulos adding hcrats rotacidni noitulos sdrawot
and tneiciffus dloc retaw ot ekam a niht .etsap Add eht dne fo eht .noitartit hcaE lm fo 0.1 N enidoi is
200 lm fo gniliob ,retaw liob rof 1 etunim htiw tnelaviuqe ot 5.558 gm fo .502S2K
ANNEX B
[ Table 1, Item )ii( ]
NOITANIMRETED FO RETAW ELBULOSNI RETTAM
PROCEDURE
B-l
1.l-B evlossiD tuoba 10 g fo eht ,lairetam -ca a dehgiew Gooch elbicurc dettif htiw an sotsebsa
yletaruc ,dehgiew ni 50 lm fo .retaw retliF hguorht pad ro hguorht a dehgiew deretnis glass elbicurc

2
SI :1574 1994
(G .oN 4), ylsuoiverp dehsaw dna deird at 105 ot erehw
C°011 dna hsaw llew htiw .retaw yrD eht eudiser ot tM = ,ssam ni ,g fo eht ;eudiser dna
tnatsnoc ssam at 105 ot .C°011 2M = ,ssam ni ,g fo eht lairetam nekat rof
eht .tset
2.l-B rettaM elbulosni ni ,retaw
100 lM
tnecrep yb ssam = ~z
ANNEX C
[ Table 1, Item (iii) ]
NOITANIMRETED FO ETAHPLUSOIHT
C-l STNEGAER C-2 PROCEDURE
1.l-C muissatoP edimorB dna cirucreM edirolhC evlossiD 5 f 0.1 g fo eht elpmas ni dellitsid retaw
dna etulid ot 100 .lm ddA 10 lm fo eht tnegaer
Mixture ( The Reagent )
(C-1.1) to a lm-05 relsseN roebut elbatiusrehtoyna
evlossiD 25 g fo muissatop edimorb dna 25 g fo
tset ebut dna ni ti ylwols ettepip eno lm fo eht
cirucrem edirolhc ni 900 lm fo dellitsid retaw at
.noitulos oT rehtona lm-05 relsseN ebut ro yna
tuoba .C°25 .looC etuliD ot eno ertil dna wolla ot
rehto elbatius ebut dna 10 folm eht tnegaer (C-1.1),
dnats .thginrevo ,retliF fi yrassecen ot niatbo as
dna 2.0 lm fo dradnats muidos etahplusoiht -ulos
yltcefrep raelc .noitulos
.noit wollA htob eht sebut ot dnats rof 15 setunim
2.l-C Standard Thiosulphate Solution tuohtiw ,noitatiga neht etatiga ylluferac ot -sid
etubirt eht .ecnecselapo ehT ecnecselapo fo eht
ylhserF deraperp yb gnitulid 2.0 lm fo 0.1 N muidos
elpmas llahs ton eb erom naht taht eht ebut -noc
etahplusoiht ot eno .ertil
gniniat eht .dradnats
ANNEX D
[ T&e 1, Irem (v) ]
DETERMINATION OF IRON

D-l REAGENTS D-l.5 Standard norI -noituloS margorcimOl .eF
D-i.1 Bromine Solution D-2 ERUDECORP
eraperP a detarutas noitulos fo enimorb yb -tatiga
oT eno marg fo eht elpmas dda 2 lm fo cirolhcordyh
gni 2 ot 3 lm fo enimorb htiw 100 lm fo dloc retaw
dica dna etaropave ot ssenyrd no a .htab-maets
ni a ssalg dereppots ,elttob eht reppots fo hcihw
evlossiD eht eudiser ni 2 lm fo cirolhcordyh dica
dluohs eb detcairbul htiw .muelortep erotS ni a looc
dna 20 lm fo ,retaw dda a wef spord fo enimrob
ecalp dna tcetorp morf .thgil
,noitulos dna liob eht noitulos ot evomer eht
D-l.2 cirolhcordyH Acid .enimorb ,looC etulid htiw retaw ot 25 ,lm neht dda
50 gm fo muinomma etahplusrep dna 5 lm fo -ma
D-l.3 Ammonium Persulphate
muinom etanaycoiht .noitulos ynA der ro knip
D-l.4 Ammonium Thiocyanate Solution ruoloc llahs ton deecxe taht decudorp ni a lortnoc
evlossiD fog8 muinomma etanaycoiht (NHKNS), gniniatnoc 1.0 lm .fo dradnats nori noitulos (10
ni tneiciffus retaw ot ekam 100 .lm margorcim ).eF

3
493!1:1574
IS
ANNEX E
[Table 1,I fem (vi)]
NOITANIMRETED FO MUINELES
STNEGAER ylsuoipoc ,devlove dna eunitnoc gnitaeh yltneg rof
El
a wef setunim ot erusne noitisopmoced fo yna -xe
1.lE Selenium Stock Solutlon ssec .edixorep fI eht noitulos si hsinworb ni ruoloc
Transfer 120.0 gm fo cillatem muineles )eS( otni a eud ot desopmocednu cinagro ,rettam dda a llams
1 lm-000 cirtemulov ,ksalf dda 100 lm fo etulid noitrop fo eht edixorep noitulos dna taeh niaga ot
cirtin dica (1 ni 2), mraw yltneg no a htab-maets ot etihw cirolhcrep dica ,semuf gnitaeper fi yrassecen
tceffe ,noitulos dna etulid ot emulov htiw .retaw litnu noitisopmoced fo eht cinagro rettam si -moc
’refsnarT 5.0 lm fo siht noitulos otni a )m-002 etelp dna a sselruoloc noitulos si .deniatbo ,looC
cirtemulov ,ksalf etulid ot emulov htiw ,retaw dna dda 10 lm fo ,retaw dna retlif otni a 200 mm x 25
.xim hcaE ertilillim fo siht noitulos sniatnoc 3 mm .ebut-tset hsaW eht retlif htiw toh retaw litnu
margorcim fo muineles noi .)eS( eht etartlif serusaem 20 ,lm dda 20 lm fo
cirolhcordyh dica dna .xim
E-l.2 dradnatS muineleS noituloS
E-2 ERUDECORP
tsuJ roirp ot ,esu refsnart 20.0 lm fo muineles kcots
noitulos (60 margorcim )eS otni a 200 mm x 25 ecalP eht tset sebut gniniatnoc eht dradnats
mm tset ebut dda 20 lm fo cirolhcordyh ,dica dna muineles noitulos dna eht elpmas noitulos ni a
.xim ,htab-retaw dna taeh litnu eht erutarepmet fo eht
noitulos sehcaer .C°04 oT hcae ebut dda 400 gm fo
E-l.3 elpmaS noituloS
cibrocsa ,dica rits litnu ,devlossid dna niatniam at
refsnarT fog0.2 elpmaseht aot lm-052 reyemnelrE C°04 rof 30 .setunim looC eht ,noitulos etulid htiw
,ksalf dna ylsuoituac dda 10 lm fo 30 tnecrep retaw ot 50 ,lm dna .xim ynA knip ruoloc decudorp
negordyh .edixorep retfA eht laitini noitcaer sah yb eht elpmas llahs ton deecxe taht decudorp yb eht
,dedisbus dda 6 lm fo 70 tnecrep cirolhcrep ,dica .dradnats
taeh ylwols litnu etihw semuf fo cirolhcrep dica are
ANNEX F
[ Table 1,I tem )iiv( ]
TSET
FOR IIFAVY METALS

eudiser ni lm fo .retaw ehT noitulos steem eht
F-l PROCEDURE 25
stnemeriuqer fo eht yvaeh latem tset as nevig ni
evlossiD 2 g muissatop etihplusibatem ni 20 lm fo ~ xen J fo SI 4447 : 1994 gnisu 20 margorcim fo
,retaw dda 5 lm fo cirolhcordyh .dica etaropavE ot dael noi (Pb) ni eht lortnoc t,oitn/05( .)A
tuoba 1 lm no a maets htab dna evlossid eht

4
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Amendments Issued Since Poblication
~~
dnemA .oN etaD fo Issue Text Affected
UAERUB FO NAIDNI SDRADNATS
:sretrauqdaeH

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