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Carboxymethyl cellulose

Carboxymethyl cellulose

Basic Information

CAS No.:9000-11-7
Molecular Formula: C8H16O8
Molecular Weight: 240.21

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Product Details

CMC is an important cellulose ether, a water-soluble anionic polymer obtained through chemical modification of natural fibers. It is soluble in both cold and hot water. It possesses unique and valuable physicochemical properties, including emulsifying and dispersing abilities, resistance to degradation, and physiological inertness, making it a widely used natural polymer derivative.


Chemical Properties

PropertyValue
Density1.050 g/cm3(Temp: 15-18 °C)
FEMA2239 | CARBOXYMETHYLCELLULOSE
Storage temp.2-8°C
SolubilityPractically insoluble in anhydrous ethanol. It swells with water to form a suspension and becomes viscid in 1 M sodium hydroxide.
Formpreswollen, microgranular
ColorWhite to off-white
Odorodorless
Stability:Stable. Combustible. Incompatible with strong oxidizing agents.
InChIInChI=1S/C6H12O6/c7-1-3(9)5(11)6(12)4(10)2-8/h1,3-6,8-12H,2H2
InChIKeyGZCGUPFRVQAUEE-UHFFFAOYSA-N
SMILESC(=O)C(O)C(O)C(O)C(O)CO
LogP-3.17
CAS DataBase Reference9000-11-7(CAS DataBase Reference)
EPA Substance Registry SystemCellulose, carboxymethyl ether (9000-11-7)


Safety Information

PropertyValue
WGK Germany1
RTECSFJ5700000
HS Code3912310000
ToxicityLD50 unreported in mammal (species unspecified): 13340mg/kg


Product Usage

Carboxymethyl Cellulose (CMC) is an important water-soluble cellulose derivative widely used in food, pharmaceutical, personal care, papermaking, and industrial applications. In the food industry, it acts as a thickener, stabilizer, and emulsifier to improve texture and product stability. In pharmaceuticals, it is used as an excipient and in controlled-release formulations to enhance tablet formation and drug release performance. In personal care products, such as toothpaste and detergents, it increases viscosity and system stability. It is also applied in papermaking and textiles as a sizing and finishing agent, offering good film-forming ability and compatibility.

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