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C4888

Sigma-Aldrich

Carboxymethylcellulose sodium salt

Medium viscosity

Sinônimo(s):

Sodium carboxymethylcellulose

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About This Item

Número CAS:
Número MDL:
Código UNSPSC:
12352201
NACRES:
NA.25

fonte biológica

wood (pulp)

forma

powder

cor

light yellow

faixa de pH útil

(20 °C, 10 g/L, 68 °F neutral)

viscosidade

400-800 cP, 2 % in H2O(25 °C)(lit.)

pf

> 300.05 °C ((> 572.09 °F))

solubilidade

water: soluble

traços de cátion

Na: 6.5-9.5%

temperatura de armazenamento

room temp

InChI

1S/C6H12O6.C2H4O2.Na/c7-1-3(9)5(11)6(12)4(10)2-8;1-2(3)4;/h1,3-6,8-12H,2H2;1H3,(H,3,4);

chave InChI

DPXJVFZANSGRMM-UHFFFAOYSA-N

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Descrição geral

This product is a medium viscosity carboxymethylcellulose (CMC); the viscosity of a 2% solution in water at 25 C is 400-800 centipoise (cps). The viscosity is both concentration and temperature dependent. As the temperaure increases, the viscosity decreases. As the concentration increases, the viscosity increases.

Low, medium and high viscosity CMCs are all used as suspending agents. Low viscosity CMC is usually used in "thin" aqueous solutions. Medium viscosity CMC is used to make solutions that look like a syrup. High viscosity CMC is used to make a mixture, which resembles a cream or lotion.

Aplicação

Soluble carboxymethylcelluloses (CM-cellulose; CMC) available in varying viscosities are used as viscosity modifiers (thickeners) to stabilize emulsions and as a chemical dispersants of oils and other carbon structures such as nanotubes. CMCs are used in the development of biostructures such as biofilms, emulsions and nanoparticles for drug delivery. Carboxymethylcellulose, medium viscosity, may be used to make solutions the consistency of syrup.

Nota de preparo

The product is soluble in water (20 mg/ml).
The key to dissolving carboxymethylcellulose is to add the solid carefully to the water so that it is well dispersed (well-wetted). Adding the solid in portions may be necessary. Adding water to the dry solid produces a "clump" of solid that is very difficult to dissolve; the solid must be added to the water. Stir gently or shake intermittently; do not stir constantly with a magnetic stirring bar. High heat is not needed and may actually slow down the solubilization process. A mixing device, such as an impeller-type agitator which produces a vortex, would allow the powder to be drawn into the liquid, but it may produce some shearing.

Outras notas

To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

Eyeshields, Gloves, type N95 (US)


Certificados de análise (COA)

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