IS 6831: Caustic potash

19 Pages·1992·2 MB·English

by  Bureau of Indian Standards

इंटरनेट मानक
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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 6831 (1992): Caustic potash [CHD 1: Inorganic Chemicals]
“!ा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 6831 : 1992

)~*JvFfv
Indian Standard
CITSUAC POTASH - NOITACIFICEPS
(Second Revision)
First Reprint AUGUST 1996
UDC 661.312.1

0 BIS 1992
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARC
NEW D ELHI 110002
~(ovendwr 1992 PriccGroup 7
,sdicA seilaklA and sedilaH lanoitceS ,eettimmoC DHC 002
FOREWORD
sihT naidnI dradnatS ( dnoceS noisiveR ) was detpoda yb eht uaeruB fo naidnI Standards, retfa
eht tfard dezilanif yb eht ,sdicA seilaklA and sedilaH lanoitceS eettimmoC had neeb devorppa
yb eht lacimehC noisiviD licnuoC
sihT dradnatS was yllanigiro dehsilbup ni 1973. tI was desiver ni 1982 gnignahc eht lacinhcet
edarg as erup edarg as eht citsuac hsatop derutcafunam yb citylortcele ssecorp is fo hgih .ytirup
,oslA segnahc erew edam ni eht stnemeriuqer fo ,sedirolhc sUphates, ,nori yvaeh ,slatem setacilis
and lekcin rof erup and AR :sedarg ecniS citsuac hsatop is osla derutcafunam ni substantial
ytitnauq ni eyl ,mrof ti was dedulcni ni eht 5rst .noisiver emoS snoitacifidom erew osla edam ni
eht noitaraperp fo elpmas noitulos and sdohtem rof noitanimreted fo latot ,ytinilakla -anobrac
,set sedirolhc and sulphates.
nI this ,noisiver a etarapes edarg fo citsuac hsatop elbatius rof esu ni cinortcele yrtsudni has
neeb .detaroprocni An evitanretla dohtem rof edirolhc noitanimreted has osla neeb
.detaroprocni
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 : 1930 seluR‘ rof gnidnuor ffo laciremun seulav ( desiver >‘. ehT
rebmun fo tnacifingis secalp deniater ni eht dednuor ffo eulav dluohs eb eht emas as that
fo eht deificeps eulav ni this standard.
1s 6831: 1992
Indian Staridard
CAUSTIC POTASH - SPECIFICATION
( Second Revision )
I SCOPE 4 REQUIREMENTS
1.1 sihT standard sebircserp eht stnemeriuqer 4.1 noitpircseD
and sdohtem fo sampling and tset rof citsuac
.hsatop ehT dilos lairetam shall eb ni eht mrof fo stellep
ro sekalf gnivah a enillatsyrc .erutcurts tI shall
1.1.1 tI srevoc eht lairetam ni dilos and eyl eb eerf morf ,trid ngierof rettam and rehto
.smrof elbisiv .seitirupmi nI esac fo ,eyl ’eht lairetam
shall eb raelc and tnerapsnart ,diuqil eerf
morf elbisiv dednepsus .seitirupmi
2 REFERENCES
4.2 ehT lairetam shall ylpmoc htiw eht eriuqer
The naidnI Standards, detsil woleb era -secen stirem nevig ni elbaT 1 nehw detset gnidrocca ot
yras stcnujda ot this standard:
sdohtem debircserp ni xennA ,A. ecnerefeR ot
tnaveler sesualc fo xennA A is nevig ni 1oc 6 fo
SI No. Title
elbaT 1.
265 : 1987 cirolhcordyH dica ( third
revision ) 4.3 Optional Requirements for Pure Grade
266 : 1977 ciruhpluS dica ( second fI deriuqer yb eht ,resahcrup eht timil rof
revision )
cinesra shall eb as deerga ot neewteb eht
323 : 1959 deifitceR tirips ( revised ) resahcrup and eht .reilppus
1070 : 1992 tnegaeR edarg retaw - -icepS
noitacif ( 5 PACKING AND MARKING
third revision )
1260 lairotciP gnikram rof handling 5.1 fiacking
( traP 1 ) : 1973 and gnillebal fo sdoog : traP 1
suoregnaD sdoog (first revision ) ehT ni gk-05 erup hgih edarg ytisned fo eht elairentamelyhteylop shall bags eb dekcap ro ni

2088 : 1983 sdohteM rof noitanimreted fo dlim leets drums denil htiw wol ytisned ;ylop
cinesra ( .enelyhte ehT lacitylana tnegaer edarg and
second revision )
cinortcele edarg lairetam shall eb dekcap ni
sdohteM rof modnar sampling
4905 : 1968 glass .selttob
3 GRADES 5.2 Marking
erehT shall eb eerht sedarg fo eht lairetam ehT sreniatnoc shall eb yleruces desolc and
as :swollof ylbigel and ylbiledni dekram htiw eht gniwollof
:noitamrofni
)a Pure - elbatiuS rof esu ni eht -cafunam
erut fo soaps, cilaxo dica and rehto a) ,emaN mrof and edarg fo eht ;lairetam
muissatop .sdnuopmoc tI yam osla eb
desu rof ssecorp gnivargne and -argohtil f-9 teN mass;
yhp and rof erutcafunam fo stcudorp ekil lc noitacidnI fo eht ecruos fo ;rerutcafunam
ffutseyd and muissatop .etanagnamrep
d) hctaB rebmun ni edoc ro ;esiwrehto and
‘4 Analytical Reagent ( AR ) - elbatiuS rof
esu as tnegaer ni lacitylana .krow )e ehT sdrow “CORROSIVE, ELDNAH
HTIW CARE” htiw etairporppa lebal ot
c) Electronic Grade ( ER ) - elbatiuS rof esu etacidni eht drazah [ see IS 1260
ni cinortcele .seirtsudni ( traP 1 ) : 1973 ] at a tnenimorp .ecalp
IS 6831 : 1992
Table 1 Requirements for Caustic Potash
( Ciauses 4.2 and 5.2.1 )
Sl No. Characteristic Requirement Methods of Test
~_-_---h -----7 feR( ot lC .oN
Pure AR ER in Annex A )
)1( )2( (3) (4) )5( )6(
9 latoT* ytinilakla sa( ,)HOK tnecrep yb 87.0 87.0 87.0 3-A
,ssam Min
)ii setanobraC ( sa ,O&K ,) tnecrep yb ,ssam 1.0 0-l 1 o. 4-A
XlCM
)iii sedirolhC ( sa 1CK ,) ,mpp MUX 300.0 40.0 40.0 5-A
)vi setahpluS ( as ;OS,K ,) ,mpp Max 50.0 50.0 20.0 6-A
)v Phosphates ( as ,OP ,) tnecrep yb ,ssam xaM - 00IO 5 0.000 5 7-A
)iv norI ( as eF ), ,mpp XUM 25.0 5.0 5.0 8-A
)iiv yvaeH slatem ( sa bP ,) ,mpp xaM IO.0 5.0 5.0 9-A
)iiiv elbulosnI ,rettam tnecrep yb ,ssam xaM - 0.01 0.005 01-A
)xi muidoS ( sa Na ,) tnecrep yb ,ssam xaM 1.0 0.5 0.05 11-A
)x cinesrA ( sa sA ,) tnecrep yb ,ssam Max - OGIO 1 IKGO 1 21-A
)ix setartiN ( sa NOI ,) tnecrep yb ,ssam xaM - lWO - 31-A
)iix, setaciliS ( sa lOiS ) ,mpp xaM 200.0 50.0 40.0 41-A
)iiix mdinimulA ( as. Al ,) tnecrep yb ,ssam XUM - 0.002 0+01 51-A
)vix muinommA stlas ( sa ,)&HN tnecrep yb - oOI+o 5 - 61-A
,ssam Max
muiclaC dna muisengam ( sa Ca ),_ tnecrep 0.002 5 0+02 71-A
)vx
yb ,ssam Max
)ivx lekciN ( sa Ni ,) ,mpP Max 20.0 o-01 - 81-A
)iivx Zinc ( sa nZ ,) tnecrep yb ,ssam Max - 04!Q15 - 91-A
nI* case fo eht lairetam ni eyl ,mrof the latot ytinilakla ( as )HOK llahs eb 45 ot 50 tnecrep yb .ssam
ehT stimil debircserp rof rehto scitsiretcarahc llahs ton deecxe nehw detaluclac ot a latot alkalinity of
87.0 tnecrep yb .ssam
5.2.1 In the case of lacitylana tnegaer ,edarg deniatbo morf the uaeruB of naidnI .sdradnatS

the mumixam stimil for the scitsiretcarahc nevig
6 GNILPMAS
ni co1 4 of elbaT 1 llahs osla eb nevig ni the
.lebal 6.1 ehT erudecorp for gniward the -tneserper
evita selpmas of the lairetam dna rieht airetirc
5.23 ehT sreniatnoc may osla eb dekram htiw for ytimrofnoc llahs eb as debircserp ni
the dradnatS Mark. ehT sliated yam eb .BxennA
ANNEX A
( Clause 4.2, and Table 1 )
SDOHTEM FO TSET ROF CITSUAC HSATOP
A-l YTILAUQ FO STNEGAER ,sisylana
A-l.1 sselnU deificeps ,esiwrehto erup slacimehc 2-A DERAPERP ELPMAS NOITULOS
dna dellitsid water ( see SI 1070 : 1992 ) llahs 1.2-A I n a gnihgiew elttob htiw a ssalg-dnuorg
eb desu ni tests. stopper, hgiew the lairetam ( dilos or eyl ),
ot the tseraen 0.01 g tnelaviuqe ot a elttil ssel
NOTE - eruP* ’slacimehc llahs naem slacimehc taht
do ton niatnoc seitirupmi hcihw tceffa eht stluser fo naht 50 g of citsuac potash.

2
__
IS 6831 : 1992
A-2.1.1 Solid Material eb desu rof enituor sisylana and dohteM B shall
eb desu as a eerefer .dohtem
evlossiD eht lairetam ( ni yletamixorppa
A-2.1 )
200 lm fo retaw and looc ti ot moor -arepmet
.erut refsnarT eht noitulos ot a lm-005 -eno A-4.1 Double Indicator Method - dohteM A.
kram cirtemulov ksalf and etulid ylraen ot eht
.kram looC again ot eht moor ,erutarepmet A-4.1.1 Reagents
etulid ot eht kram and xim .ylhguoroht ehT
1.1.1.4-A 1 N and
noitulos thus deraperp shall eb desu rof eht Standard hydrochloric acid -
0.1 N.
tneuqesbus .stset
2.1.2-A A-4.1.1.2 Methyl orange indicator
Liquid Material
refsnarT eht lairetam ( ees 1.2-A ) yltcerid ot a evlossiD 0.1 g fo lyhtem egnaro ni 100 lm fo
.retaw
lm-005 kram-eno cirtemulov ksalf and etulid
htiw .retaw looC ot moor ,eruttarepmet etulid
3.1.1.4-A
ot eht kram and xim .ylhguoroht ehT noitulos Phenolphthalein indicator solution
thus deraperp shall eb desu rof .stset
evlossiD 0.1 g fo nielahthplonehp redwop ni 60
NOTE - citsuaC hsatop yldipar .secseuqiled tI si lm fo deifitcer tirips ( ees SI 323 : 1959 ) and
osla citsuac ol cinagro .rettam tI dluohs eb tpek etulid htiw retaw ot 100 .lm
ni a ylthgit desolc reniatnoc dna deldnah htiw
rebbur sevolg .no
2.1.4-A
Procedure
3-A NOITANlMRETED FO LATOT
ettepiP tuo 25 lm fo eht deraperp elpmas -ulos
YTINILAKLA
noit ( ees 2-A > otni a lacinoc ksalf and add 2 ot
3 spord fo nielahthplonehp .rotacidni etartiT
1.3-A stnegaeR
ti against standard cirolhcordyh dica noitulos
1.1.3-A 1 N. ( 1 N ) up ot a elttil erofeb eht dne .tniop ekaT
Standard Hydrochloric Acid -
this gnidaer as rehtruF etartit ti against
A.
2.1.3-A Methyl Orange Indicator standard cirolhcordyh dica ( 0.1 N ) llit eht
knip ruoloc just disappears. ekaT this gnidaer
evlossiD 0.1 g lyhtem egnaro ni 100 lm fo .retaw
as .B nehT add 2 ot 3 spord fo lyhtem egnaro
rotacidni and eunitnoc noitartit against
2.3-A erudecorP
standard cirolhcordyh dica ( I-0 N ) ot a hsidder
refsnarT yltcaxe 20 lm fo eht deraperp elpmas egnaro .ruol’oc ekaT this gnidaer as C.
noitulos ( ees 2-A ) ot a lm-005 lacinoc .ksalf
Add yletamixorppa 80 lm fo retaw and 5 spord 3.1.4-A
Calculation
fo lyhtem egnaro rotacidni and etartit against
standard cirolhcordyh dica litnu eht ruoloc fo setanobraC ( as ,OC,K ,)
eht rotacidni segnahc morf wolley ot .egnaro tnecrep yb mass = 276 ( C Nx)B-
-M
3.3-A noitaluclaC
erehw
latoT ytinilakla ( as HOk ,) N = ytilamron fo standard cirolhcordyh
tnecrep yb mass VxN dica ( O.lN ;) and
=- x 140
M
mass, ni g, fo eht lairetam ni eht
erehw M=
touqila nekat rof this .tset
=v ,emulov ni ,lm fo standaid -ordyh
cirolhc dica desu rof ;noitartit ehT-ETON gnidaer A hcihw si nekat htiw 1 N
cirolhcordyh dica lliw eb detrevnoc ot eht tnelaviuqe
N= ytilamron fo standard cirolhcordyh emulov fo 0.1 N cirolhcordyh dica erofeb gnitaluclac
;dica and semulov B dna .C
mass, ni g, fo eht lairetam ni eht
M=
touqila nekat rcf eht .tset 2.4-A cirtemoesaG dohteM - dohteM .B
4-A NOITANIMRETED FO SETANOBRAC 0.2.4-A Principle
0.4-A owT ,sdohtem ,yleman dohteM A elbuoD ehT emulov fo nobrac edixoid devlove morf a
rotacidnI dohteM and dohteM B cirtemoesaG noitrop fo eht tset elpmas yb noitcaer htiw
dohteM evah neeb .debircserp dohteM A shall etulid cirolhcordyh dica is .derusaem
3
_ _.., _-..
IS 6831:1992
1.2.4-A Reagents 3.3.4-A Evolution and Measurement of Carbon
Dioxide
A-4.2.1.3 Distilled water, or water of equivalent
yB snaem fo a gnitarapes ,lennuf ruop 35 lm fo
purity, free from cabon dioxide at room
12 N cirolhcordyh dica otni ksalf taking erac
A
temperature
ot diova ssol fo gas. ehT ytidica fo eht
etanimilE yna nobrac edixoid tneserp rehtie yb noitulos ni eht ksalf is thus yletamixorppa 2 N
gniliob retaw rof 10 setunim and gnilooc ti ni retfa eht noitulove fo nobrac .edixoid taeH
eht ecnesba fo cirehpsomta nobrac ,edixoid ,ro eht ksalf and maintain eht noitulos at gniliob
erom ,ylpmis yb gnilbbub ria eerf morf nobrac tniop rof 5 setunim elihw gninnur dloc retaw
edixoid hguorht ti rof 15 setunim hguorht eht .resnednoc nehT pots gnitaeh and
add erom fo eht deruoloc dica noitulos yb
ehT ria is deerf morf nobrac edixoid yb passing snaem fo eht gnitarapes ,lennuf gnirewol eht
ti hguorht a nmuloc gniniatnoc stellep fo muidos gnillevel elttob F llits rehtruf ot ekam eht
.edixordyh erotS eht retaw ni an erehpsomta noitulos ni eht ksalf A esir ni eht resnednoc
eerf morf eht nobrac .edixoid ebut up ot kcoc R,. nehT esoic eht rettal and
wait rof 5 setunim ot wolla eht gas ot hcaer eht
2.1.2.4-A Hydrochloric acid - 1 N. erutarepmet fo eht retaw .tekcaj erusaeM eht
emulov fo gas Vat cirehpsomta erusserp and
P
3.1.2.4-A Sodium ,edirolhc coloured acid solution at eht erutarepmet t fo retaw ni eht .tekcaj
roF this esoprup evom eht gnillevel elttob
F
evlossiD 26 g fo muidos ,edirolhc ni .retaw
ot gnirb eht deruoloc dica noitulos ot eht emas
Add 5 lm fo ciruhplus dica ( evitaler ytisned level htob ni eht ksalf alld ni eht etterub
B;
= 1.83 .) etuliD ti ot 1000 ,lm add a wef daer eht emuiov fo eht .rettal Adjust eht pots
spord fo 0.05 tnecrep lyhtem egnaro rotacidni skcoc and that eht etterub and
R, R, so B
noitulos and xim .ylhguoroht rebrosba C era ,detcennoc neht esiar eht
gnillevel elttob that eht gas is derrefsnart
4.1.2.4-A F so
Sodium hydroxide solution - 1 N. ot eht rebrosba erehw eht nobrac edixoid is
.debrosba nehT refsnart eht debrosba-non gas
as nwohs ni .giF 1.
A-4.2.2 Apparatus - kcab ot etterub yb gnirewol eht gnillevel
B
elttob and, retfa adjusting eht level fo eht
3.4-A erudecorP F
edixordyh noitulos ot eht eguag kram no
a
1.3.4-A ,hgieW ot eht tseraen 0.01 g, eht tset rebrosba C, esolc pots kcoc R, and daer eht
elpmas ( dilos ro eyl ) gnidnopserroc ot emulov fo eht laudiser gas. taepeR eseht
yletamixorppa 4 ot 5 g fo citsuac .hsatop snoitarepo litnu a tnatsnoc emulov IV is
.deniatbo ehT ecnereffid ni eht emulov
2.3.4-A Preparation of the Apparatus -V( V, ) stneserper eht nobrac edixoid
deniatnoc ni eht tset ,noitrop derusaem at
lliF etterub B fo eht apparatus htiw eht deruoloc cirehpsomta erusserp and at eht erutarepmet fo

dica noitulos hguorht gnillevel elttob eht retaw .tekcaj
F.
ruoP otni rebrosba C emos fo eht muissatop
4.3.4-A
edixordyh noitulos ( wener this noitulos retfa Calculation
100 snoitanimreted .) With etterub B and setanobraC
rebrosba C dellif up ot pots kcoc R, and -arg ( sa ,OC&I ,)
noitaud kram a ,ylevitcepser and pots skcoc R, tnecrep yb mass = 222-O 7 $$&; x v
and ,desolc ecalp eht tset noitrop ni ksalf
R, A
ni eht esac fo dilos ,lairetam evlossid ti ni erehw
(
yletamixorppa 30 lm fo retaw .) etuliD ot P = cirehpsomta ,erusserp ni mm ,gH at
yletamixorppa 40 lm os as ot ecuder eht daed eht emit fo ;noitanimreted
ecaps ot a emulov ylthgils retaerg than 100 lm ruopav ,erusserp ni mm ,gH fo eht
( emulov evoba eht level fo eht diuqil ni ksalf P = deruoloc dica noitulos at eht -arepmet
A plus eht emulov fo resnednoc ebut D up ot erut fo eht retaw ni eht ;tekcaj
kcoc ecalP ni eht ksalf eerht nialecrop ro
R, ). t I ,erutarepmet ni seerged Celsius, fo eht
glass balls, tuoba 1 mm ni ,retemaid and a wef
retaw ni eht ;tekcaj
seceip fo ecimup gnivah a latot emulov -orppa
yletamix lauqe ot that fo eht balls. reppotS V = ,emulov ni ,lm fo gas erofeb noitprosba
fo itobrac ;edixoid
eht ksalf and esolc eht pots kcoc tcennoC
R.
ksalf htiw etterub hguorht eht pots kccc ,v = ,emulov ni ,lm fo gas retfa noitprosba
A B R,
and rewol eht gnillevel elttob kcehC eht fo nobrac ;edixoid and
F.
ssenthgit fo eh.t apparatus yb yletairporppa mass, ni g, fo eht lairetam nekat rof
M =
handling eht skcoc and eht gnillevel .elttob eht .tset
4
Is6831:1992
WATER
t/ 50 ml

Fm. 1 ASEMBLY OF APPARATUS FOR DLXBRMINATIONO F CARBONATES
BY GA~EOMETRICM ETHOD
5