文档羧甲基纤维素e.docx

羧甲基纤维素（Carboxymethylcellulose）Carboxymethylcellulose

Contentanalysis;toxicity;limitsofuse;foodadditives;maximumpermissibleuse;maximumpermissibleresidue;standardcarboxymethylcellulose;reagentgradeprices

CarboxymethylcelluloseCAS:9004-32-4EnglishName:Carboxymethylcellulose

Englishsynonyms:B10;cmc2;s75m;7h3sf;carbo;;cmc7h;cmc7m;cmc41a;cmc4h1;cmc4m6

Carboxymethylcellulose

Chinesesynonym:cellulosegum;acidmethylcellulose;carboxymethylcellulose;sodiumcarboxymethylcellulose;carboxymethylcellulose;sodiumcarboxymethylcellulose;carboxymethylcellulosesodiumcarboxymethylcellulose;1M6;sodiumcarboxymethylcellulose(alkaline);carboxymethylcellulose(IM6)

CBNumber:CB5209844

Molecularformula:C6H7O2(OH)2CH2COONaMolecularweight:0

MOLFile:Molfile

Carboxymethylcellulose,chemicalpropertyMeltingpoint:274degreesC(Dec.)Density:1,6g/cm3

Solubility:H2O:,20,mg/mL,solubleForm:lowviscosity

Watersolubility:solubleMerck:141829

Stability:Stable.,Incompatible,with,strong,oxidizing,agents.

EPAchemicalinformation:Cellulose,

carboxymethyl,

ether,

sodium,salt(9004-32-4)

securityinformation

Dangerouscategorycode:40

Safetyinstructions:24/25

WGKGermany:1

RTECS:FJ5950000

F:3

CarboxymethylcelluloseMSDSCarboxymethylcellulose

Properties,usesandproductionprocessofcarboxymethylcellulose

Contentanalysis

Thepercentageofsodiumcarboxymethylcelluloseisreducedby

100bysubtractingthepercentageofthefollowingsodiumchlorideandsodiumglycolate.

Thecontentofsodiumchlorideisaccurate.Takethesampleabout5g,removea250m1beaker,addwater50mland30%hydrogenperoxide5ml,heat20minonthesteambath,andstiroccasionallyuntilcompletelydissolved.Cooling,usingsilversulfateandmercurysulfatepotassiumsulfateelectrode,donotstopstirring,addwater100mlandnitricacid10ml,andthenuse0.05mol/Lsilvernitratetitrationtotheendofthepotential.Pre