Merck
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C4888

Sigma-Aldrich

Carboxymethylcellulose sodium salt

Medium viscosity

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Synonym(s):
Sodium carboxymethylcellulose
CAS Number:
MDL number:

biological source

wood (pulp)

Quality Level

form

powder

color

light yellow

useful pH range

(20 °C, 10 g/L, 68 °F neutral)

viscosity

400-800 cP, 2 % in H2O(25 °C)(lit.)

mp

> 300.05 °C ((> 572.09 °F))

solubility

water: soluble

cation traces

Na: 6.5-9.5%

storage temp.

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);

InChI key

DPXJVFZANSGRMM-UHFFFAOYSA-N

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1 of 4

This Item
C5013419273C9481
form

powder

form

powder

form

powder

form

powder

color

light yellow

color

light yellow

color

-

color

light yellow

useful pH range

(20 °C, 10 g/L, 68 °F neutral)

useful pH range

(20 °C, 10 g/L, 68 °F neutral)

useful pH range

-

useful pH range

-

mp

> 300.05 °C ((> 572.09 °F))

mp

> 300.05  °C ((> 572.09 °F ))

mp

274 °C (dec.)

mp

> 300.05  °C ((> 572.09 °F ))

solubility

water: soluble

solubility

H2O: 10 mg/mL

solubility

-

solubility

water: soluble

General description

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.

Application

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.

Preparation Note

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.

Other Notes

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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