IS 14563-1: Textiles - Determination of formaldehyde, Part 1: Free formaldehyde

10 Pages·1998·1.2 MB·English

by  Bureau of Indian Standards

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in order to promote transparency and accountability in the working of every public authority,
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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.
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“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 14563-1 (1998): Textiles - Determination of
formaldehyde, Part 1: Free formaldehyde [TXD 5: Chemical
Methods of Test]
“!ा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””ै”
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“Knowledge is such a treasure which cannot be stolen”

IS1 4563 (Part 1 ) : 1998

Indian Standard
SELITXET - NOITANIMRETED FO EDYHEDLAMROF
PART 1 FREE FORMALDEHYDE
ICS 59.080.01

QBIS 1998
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEWDELHI 110002
July 1998 Price Group 2
lacimehC sdohteM fo tseT lanoitceS ,eettimmoC XT 05
FOREWORD
sihT naidnI dradnatS ( traP )1 was detpoda yb eht uaeruB fo naidnI Standards, retfa eht lfard dezilanif yb eht
lacimehC sdohteM fo tseT lanoitceS eettimmoC had neeb devorppa yb eht elitxeT noisiviD .licnuoC
sihT dohtem sdnopserroc ot eht esenapaJ dohtem deificeps ni eht esenapaJ waL .oN 112 fo 1973 waL( rof eht
lortnoc fo dlohesuoh sdoog gniniatnoc lufmrah secnatsbus .)
sihT standard sllac rof eht esu fo secnatsbus ro/dna serudecorp that yam eb suoirujni ot htlaeh fi etauqeda
snoituacerp era ton .nekat tI srefer ylno ot lacinhcet ytilibatius and seod ton evlosba eht resu morf lagel
snoitagilbo gnitaler ot htlaeh and ytefas at yna .egats elihW gnitfard this standard ti has neeb assumed that
eht noitucexe fo its snoisivorp is detsurtne ot yletairporppa deifilauq and decneirepxe .elpoep
nI gnitroper eht stluser 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 )’ .
SI 14563 ( traP )1 : 1998
Indian Standard
SELITXET - NOITANIMRETED FO EDYHEDLAMROF
PART 1 FREE FORMALDEHYDE
1 SCOPE calibration curve weekly to correct for slight changes in
the standard curve.
sihT standard ( traP 1 ) sebircserp a dohtem rof
gninimreted eht tnuoma fo eerf edyhedlamrof and 4.3 edyhedlamroF ,noituloS approximately 37
tnecrep v/w( ro .)w/w
edyhedlamrof detcartxe yltrap hguorht .sisylordyh ehT
dohtem nac eb deilppa ot eht gnitset fo elitxet samples
4.4 cilonahtE noituloS fo enodemiD
ni yna .mrof
eraperP yb gnivlossid gI fo enodemid -lyhtemid(
ehT erudecorp is dednetni rof esu ni eht egnar fo free lonicroser-ordyhid ro )enoidenaxeholcyc-lyhtemid5,5
and hydrolysed formaldehyde on the fabric between ni lonahte and yb gnitulid eht noitulos htiw lonahte
20 gk/gm and 3 500 gklgm nehw denimreted yb this ekamot 1OOml.
.dohtem nI esac eht eerf and desylordyh edyhedlamrof
is woleb eht rewol timil fo 20 gk/gm eht tluser is eraperP eht noitulos yletaidemmi erofeb .esu
detroper as ton‘ .’elbatceted
s SUTARAPPA
2 SECNEREFER
5.1 cirtemuloVdermqqtS Flasks, 50 ,lm 250 ,lm 500
ehT naidnI Standards detsil woleb era yrassecen .lmOOo1dnalm
stcnujda ot this standard:
5.2 Flask, 250 ,lm htiw .reppotS
IS No. Title
5.3 ,settepiP 1 ,lm 5 ml, 10 lm and 25 ml volume-trica nd
6359 : 1971 Method for conditioning oftextiles 5 ml detaudarg
1070 : 1992 tnegaeR edarg retaw ( third NOTE - An automatic pipette system of the same
revision ) accuracy as manual pipettes may be used.
5.4 ,setteruB 10 lm and 50 .lm
3 PRINCIPLE
5.5 cirtceleotohP retemiroloC ro retemortcepS
Formaldehyde is extracted from a textile sample with
,htgnelevaw( 4 12 .)mn
water at 4O’C. The amount of for maldehyde is then

determined calorimetrically. 5.6 tseT ,sebuT retemirolac sebut ro retemortceps

.sebut
4 REAGENTS
5.7 retaW ,htaB at 40 f 2OC.
All reagents shall be of analytical reagent grade.
4.1 Distilled retaW ro tnegaeR edarG 5.8 ,sretliF edam from heat resistant glass having a
retaW gniylpmoC htiw SI 1070 pore size between 40 mp and 100 .mp
NOTE - Sintered glass crucible of porosity grade 2 meets
4.2 enotecalytecA tnegaeR ( Nash Reagent )
this requirement.
Dissolve 150 g of ammonium acetate in about 800 ml 5.9 ,ecnalaB etarucca ot 0.2 .gm
of reagent grade water, add 3 ml of glacial acetic acid
6 NOITARAPERP FO DRADNATS NOITULOS
and 2 ml of acetylacetone, transfer into a 1 000 ml
AND NOITARBILAC
volumetric flask and make up to the mark with water.
Store in a brown bottle. 6.1 noitaraperP
NOTE - The reagent slightly darkens in colour on eraperP an yletamixorppa 1 500 l/gm kcots noitulos of
standing during the first 12 h. Accordingly, the reagent
formaldehyde by diluting 3.8 ml of formaldehyde
should be stored for 12 h before use. Otherwise, the
solution to one litre with water. Determine the
reagent is useable over a ccnsiderable period of time, at
concentration of formaldehyde in the stock solution
least 6 weeks. Since the sensitivity may change slightly
over a long period of time, it is good practice to run a by a standard method given in Annex A
1
IS 14563 ( Part 1) : 1998
droceR eht etarucca noitartnecnoc fo this ETON - Storage may be in a polyethylene bag and
dezidradnats kcots .noitulos sihT kcots noitulos yam wrapped in aluminium foil to avoid diffusion of formal-
eb tpek rof at tsael ruof skeew and is desu ot eraperp dehyde through the pores of the bag. In: addition,
catalyst, or other compounds present in a finished,
standard .snoitulid
unwashed fabric may react with the foil if in direct
6.2 Dilution contact.
ehT tnelaviuqe noitartnecnoc fo eht edyhedlamrof ni morF eht ,elpmas tuc owt tset snemiceps otni small
eht tset ,nemiceps desab no eht mass fo gl fo eht tset seceip and hgiew yletamixorppa 1 g fo eht seceip ot
nemiceps and 100 lm fo ,retaw lliw eb 100 semit an ycarucca fo 10 .gm fI eht edyhedlamrof tnetnoc is
eht etarucca noitartnecnoc fo eht standard .noitulos ,wol esaercni eht tset nemiceps thgiew ot 2.5 g ni
redro ot eveihca a tneiciffus .ycarucca
6.2.1 Preparation of the Standard-Solution (S2)
roF hcae tset ,nemiceps tup eht dehgiew seceip otni a
etuliD 25 lm fo eht detartit standard noitulos gniniatnoc(
250 lm ksalf htiw reppots and add 100 lm fo .retaw
1.5 lm/gm fo ,)edyhedlamrof deraperp ni 6.1 htiw
reppotS ylthgit and ecalp ni a retaw bath at 40 f 2°C
retaw ot 500 lm ni a cirtemulov .ksalf sihT noitulos
rof 60 f 5 .nim ekahS eht ksalf at tsael yreve 5 .nim
sniatnoc 75 l/gm fo edyhedlamrof .)OYC(
nehT retlif eht noitulos otni rehtona ksalf hguorht a
6.2.2 Preparation of the Calibration-Solution glass .retlif
1 lm 2S ot 500 ,lm gniniatnoc 0.15 pg lm/O&C = 15 gk/gm O,HC no eht cirbaf
2 lm 2S ot 500 ,lm gniniatnoc 0.30 ug CYO/ml E 30 gk/gm O,HC no eht cirbaf
5 lm 2S ot 500 ,lm gniniatnoc 0.75 pg lm/O&C G 75 gk/gm O,HC no eht cirbaf
10 lm 2S ot 500 ,lm gniniatnoc 1.50 pg lm/O_,HC = 150 gk/gm CYO no eht cirbaf
15 lm 2S ot 500 ,lm gniniatnoc 2.25 ng CH,O/ml= 225 gk/gm CYO no eht cirbaf
20 lm 2S ot 500 gniniatnoc,lm 3.00 ug CYO/ml = 300 gk/gm CYO no eht cirbaf
30 lm 2S ot 500 ,lm gniniatnoc 4.50 pg lm/O,HC E 450 gcl/gm C&O no eht cirbaf
40 lm 2S ot 500 ,lm gniniatnoc 6.00 ug lm/O%C E 600 gkigm O,HC no eht cirbaf
etaluclaC eht tsrif redro noisserger evruc fo eht epyt nI esac fo ,etupsid esu a denoitidnoc lellarap
y = D + bx. sihT noisserger evruc lliw eb desu rof all nemiceps ot etaluclac a noitcerroc tneiciffeoc ot eb
.stnemerusaem fI eht tset snemiceps niatnoc a rehgih desu ni gnitcerroc eht mass fo eht tset nemiceps ot eb

tnuoma fo edyhedlamrof than 500 gk/gm etulid eht used rof eht .tset
elpmas .noitulos
Cut eht tset nemiceps morf eht ,elpmas hgiew ti
yletaidemmi and again retfa .gninoitidnoc esU eseht
NOTE - This double dilution is necessary to have the seulav ot etaluclac eht noitcerroc tneiciffeoc ot owt
same formaldehyde concentration solutions as in the test
sregetni and esu eht tneiciffeoc ot etaluclac eht
solutions of the fabrics. If the fabric contains 20 mg/kg
denoitidnoc thgiew fo eht tset nemiceps desu rof eht
formaldehyde, a Ig specimen is extracted with 100 ml of
water, the solution contains 20 @g formaldehyde and elpmas .noitulos
from this follows, 1m l of test solution contains 0.2 pg
8 PROCEDURE
of formaldehyde.
8.1 tuP 5 lm fo eht deretlif tset nemiceps noitulos otni
7 NOI’MRAPERP AND GNINOITlDNOC OF TEST a ebut and 5 lm fo eht dracnats edyhedlamrof
SPECIMENS noitulos otni a rehtona tset .ebut Add 5 lm fo
enotecalyteca tnegaer noitulos ni hcae tset ebut and
oD ton noitidnoc eht elpmas esuaceb eht gniyrderp ekahs .meht
and ytidimuh ni noitcennoc htiw eht gninoitidnoc yam
8.2 peeK eht tset sebut tsrif ni a retaw bath at
esuac segnahc ni eht edyhedlamrof tnetnoc
40 f 2OC rof 30 f 5 nim and neht at tneibma -arepmet
fo eht .elpmas roirP ot tset erots eht elpmas ni a
erut rof 30 f 5 .nim gnikaT eht noitulos fo 5 lm fo
.reniatnoc
enotecalyteca tnegaer noitulos ni 5 lm fo retaw
2
SI 14563 ( Part 1 ) : 1998
gnivah neeb detaert ni eht emas yaw as eht blank disappears.
tnegaer and using a ,retemortceps erusaem eht
9 CALCULATION AND EXPRESSION OF THE
secnabrosba ni a 10 mm noitprosba llec at a -evaw
htgnel fo 4 12 mn against .retaw RE!3UIxS
8.3 fI ti is detapicitna that eht scirbaf evah 9.1 roF hcae tset nemiceps tcerroc eht ecnabrosba fo
eht tset nemiceps as :swollof
edyhedlamrof noitcartxe slevel fo erom than 500 /gm
kg, ro fi eht detaluclac slevel morf eht tset using eht
A=As-A,-A,
5 : 5 oitar era erom than 500 ,gk/gm etulid eht tcartxe
erehw
ot evig ecnabrosba ni eht egnar fo eht noitarbilac evruc
eht( noitulid rotcaf shall eb nekat otni tnuocca nehw A = detcerroc ,ecnabrosba
gnitaluclac eht .)stluser
derusaem ecnabrosba fo eht tset ,nemiceps
A, =
8.4 oT tnuocca rof eht tceffe fo yna seitirupmi ro
A, = derusaem ecnabrosba fo eht blank ,tnegaer
noitarolocsid ni eht tset nemiceps ,noitulos tup 5 lm
and
fo eht elpmas noitulos ni a etarapes tset ,ebut add 5
lm fo retaw daetsni fo enotecalyteca and taert ni eht derusaem ecnabrosba fo blank nemiceps
A,=
emas yaw as .evoba enimreteD eht ecnabrosba fo this ylno( ni esac fo noitarolocsid ro rehto
,noitulos ni eht emas yaw as ,evoba tub using retaw .)noitanimatnoc
as eht .lortnoc
enimreteD eht tnuoma fo eht edyhedlamrof ni lm&
8.5 ekaM at tsael owt lellarap .stset morf eht noitarbilac ,evruc using eht eulav fo eht
detcerroc .ecnabrosba
NOTE - Exposure of the developed yellow colour to
direct sunlight for a period of time will cause some fad- 9.2 etaluclaC eht tnuoma fo edyhedlamrof detcartxe
ing. If there is appreciable delay (for example, 1 h) in
rof hcae nemiceps )F( ot eht tseraen gk/gm using eht
reading the tubes after oolour development and strong
gniwollof :noitauqe
sunlight is present, care should be exercised to protect
the tubes such as by covering them with a formaldehyde cx 100
free enclosure. Otherwise the colour is stable for con- F= w
siderable time (at least overnight) and reading may be
erehw
delayed, if desired.
8.6 fI ereht is a tbuod that eht noitprosba yam ton eb C= noitartnecnoc fo edyhedlamrof ni noitulos ,ni(
eud ot edyhedlamrof tub rof elpmaxe ot an detcartxe @ml) sa daer morf eht noitarbilac ,hparg and
gniruoloc ,tnega yrrac tuo a noitamrifnoc ,tset htiw
mass fo tset nemiceps ni grams.
W=
enodemid ees( .)7.8
etaluclaC eht citemhtira naem fo eht owt .seulav
NOTE - Dimedone reacts with formaldehyde, and thus
no colour resulting from formaldehyde reaction will be fI eht tluser is less than 20 gkigm troper as ton‘ -

observed. .’elbatceted

8.7 roF enodemid ,noitamrifnoc tup 5 lm fo eht elpmas
10 TEST REPORT
noitulos ni a tset ebut detulid( erehw ,yrassecen
ees 7 ,) add 1 lm fo cilonahte noitulos fo enodemid ehT tset troper shall edulcni eht gniwollof
and .ekahs noitamrofni :
Warm eht noitulos ni a retaw bath at 40 f 2°C rof )a etaD nehw eht elpmas was ,deviecer eht snaem
10 f 1 ,setunim neht add 5 lm fo enotecalyteca ,tnegaer ni hcihw ti was derots roirp ot tset and eht etad
ekahs and eunitnoc ot mraw eht noitulos ni a retaw ti was ;detset
bath at 40 f 2°C rof 30 f 5 .setunim evaeL eht
)b noitpircseD fo eht elpmas ;detset
noitulos llits at moor erutarepmet rof 30 f 5 .setunim
enimreteD eht ecnabrosba fo eht noitulos using a
)c Mass fo eht tset nemiceps and, fi ,deriuqer eht
lortnoc noitulos deraperp ni eht emas yaw as ,evoba noitcerroc tneiciffeoc rof eht mass;
tub htiw retaw daetsni fo eht elpmas .noitulos
ehT ecnabrosba morf edyhedlamrof at 412 mn )d egnaR fo eht noitarbilac ;hparg
IS 14563 ( Part 1) : 1998
e) tnuomA fo edyhedlamrof detcartxe morf eht )f ,noitaiveD yb tnemeerga ro ,esiwrehto morf
,elpmas desserpxe as ni ;2.9 and eht erudecorp .deificeps
ANNEX A
( Clause 6.1 )
NOITAZIDRADNATS FO EDYHEDLAMROF KCOTS NOITULOS
l-A LARENEG 5-A PROCEDURE
ehT kcots noitulos gniniatnoc yletamixorppa 1500 /gp ettepiP 50 lm fo muidos etihplus otni eht reyemnelrE
lm fo edyhdlamrof shall eb yletarucca dezidradnats ni .ksalf Add owt spord fo nielahthplomyht rotacidni and
redro ot eraperp a esicerp noitarbilac evruc rof esu ni a wef spord fo ciruhplus ,dica fi ,yrassecen litnu eht
cirtemirolac .sisylana eulb ruoloc disappears.
ettepiP 10 lm fo eht kcots edyhedlamrof noitulos otni
2-A ELPICNIRP
eht ksalf eht( eulb ruoloc lliw .)raeppaer etartiT eht
An touqila fo eht kcots noitulos is detcaer htiw an ssecxe noitulos htiw ciruhplus dica litnu eht eulb ruoloc is
fo muidos etihplus dewollof yb a kcab noitartit htiw .degrahcsid droceR eht emulov fo ciruhplus dica
dica noitulos ni eht ecneserp fo nielahthplomyht as noitulos .desu
.rotacidni
NOTES
3-A SUTARAPPA
1 The volume of sulphuric acid should be approximately
25 ml.
1.3-A Volumetric Pipette, 10 ml.
2 A calibrated pH meter may be used in place of
2.3-A cirtemuloV Pipette, 50 ml. thymolphthalein indicator, in which case the end point
is reached at pH = 9.5.
A-3.3 Burette, 50 ml.
yrraC tuo eht erudecorp ni .etacilpud
A-3.4 Erlenmeyer Flask, 150 ml.
6-A SNOITALUCLAC
A-4 BEAGENTS 1 lm fo 0.01 l/lom ciruhplus dica is lauqe ot 0.6 gm
fo .edyhedlamrof etaluclaC eht edyhedlamrof
A-4.1 Sodium Sulphite, Na,SO, = 1 ;1Vom deraperp
yb gnivlossid 126 g fo suordyhna Na,SO, rep .ertil snoitartnecnoc ni eht kcots noitulos ni( )ln~;;;.: morf
eht gniwollof noitauqe :

2.4-A ,nielahthplomyhT 10 l/g ni .lonahte
emuloV fo ciruhplus dica desu ni( %)lm 0.6 x 1000
3.4-A ciruhpluS ,dicA ,OS& = 0.01 .lhom emuloV fo elpmas desu ni( )lm
etaluclaC eht egareva fo eht stluser and esu eht
NOTE - This reagent may be purchased in a
standardized form or should be standardized using a noitartnecnoc denimreted evoba ni gniraperp eht
standard sodium hydroxide solution. noitarbilac evruc rof eht cirtemirolac .sisylana
Bureau of Indian Standards
SIB is a yrotutats noitutitsni dehsilbatse rednu eht Bureau c?fh?dian StandardsAct, 1986 ot etomorp suoinomrah
mempaleved fo eht seitivitca fo ,noitazidradnats gnikram and ytilauq noitacifitrec fo sdoog and gnidnetta ot
detcennoc srettam ni eht .yrtnuoc
Copyright
SIB has eht thgirypoc fo all its .snoitacilbup oN trap fo eseht snoitacilbup yam eb decudorper ni yna mrof tuohtiw
eht roirp noissimrep ni gnitirw fo .SIB sihT seod ton edulcerp eht eerf ,esu ni eht esruoc fo gnitnemelpmi eht
standard, fo yrassecen ,sliated hcus as slobmys and ,sezis epyt ro edarg .snoitangised seiriuqnE gnitaler ot
thgirypoc eb desserdda ot eht rotceriD ,)snoitacilbuP( .SIB
Review oi Indiaa Standards
stnemdnemA era issued ot standards as eht deen sesira no eht basis fo .stnemmoc era-sdradnatS osla deweiver
;yllacidoirep a standard gnola htiw stnemdnema is demriffaer nehw hcus weiver setacidni that on segnahc era
;dedeen fi eht weiver setacidni that segnahc era ,dedeen ti is nekat up rof .noisiver sresU fo naidnI Standards
dluohs niatrecsa that yeht era ni noissessop fo eht tsetal stnemdnema ro noitide yb gnirrefer ot eht tsetal issue
fo SIB‘ ’koobdnaH and sdradnatS‘ : ylhtnoM .’snoitiddA
sihT naidnI dradnatS has neeb depoleved morf toD : .oN XT 05 ( 0302 .)
Amendments Issued Since Publication
dnemA .oN etaD fo eussI txeT detceffA
BUREAU OF INDIAN STANDARDS
:sretrauqdaeH

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