What is Sodium Carboxymethyl Cellulose (CMC) CAS 9004-32-4?

CMC is a water-soluble cellulose ether derived by introducing carboxymethyl sodium groups onto the cellulose backbone. It is commonly known as cellulose gum, carmellose sodium, or E466 in food applications.

What is the difference between food grade CMC and detergent grade CMC?

Food grade CMC, such as E466, is highly purified and must meet strict purity and heavy metal limits. Detergent or technical grades are often less purified and are formulated for thickening, anti-redeposition, or suspension rather than consumption.

How do Degree of Substitution and viscosity affect CMC performance?

Degree of Substitution controls charge density and solubility behavior, while viscosity controls thickening and water retention. Higher or lower DS and viscosity grades can be selected for food, pharmaceutical, oil drilling, detergent, or other industrial formulations.

Does Sodium Carboxymethyl Cellulose dissolve easily in cold water?

It is water-soluble, but standard powder can form gel-coated lumps called fish-eyes if added too quickly. Instant CMC grades, slow addition under agitation, or pre-blending with dry ingredients help produce a smooth solution.

What are the main applications of Sodium CMC CAS 9004-32-4?

In food it stabilizes proteins, thickens sauces and syrups, and retains moisture in bakery products. It is also used as a pharmaceutical binder or disintegrant, in personal care, and in industrial grades for oil drilling and detergent systems.

Sodium Carboxymethyl Cellulose (CMC) CAS 9004-32-4

Sodium Carboxymethyl Cellulose, also called CMC, cellulose gum or E466, CAS 9004-32-4, is a water-soluble cellulose ether supplied for food, pharmaceutical and industrial applications. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 9004-32-4
Synonyms: Cellulose Gum, Sodium CMC, Carboxymethyl cellulose sodium salt, CMC-Na, E466, Carmellose sodium
Molecular Formula: [C₆H₇O₂(OH)x(OCH₂COONa)y]ₙ
Grade: Food Grade (E466), Pharmaceutical Grade, Industrial/Oil Drilling Grade.
Package: 25kg Multi-ply Kraft Paper Bag with PE inner liner or 1000kg Jumbo Bag

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Product Description

Sodium Carboxymethyl Cellulose CAS 9004-32-4 is a water-soluble cellulose ether, also known as CMC or cellulose gum, with repeat-unit formula [C6H7O2(OH)x(OCH2COONa)y]n.

Synonyms: Cellulose Gum; Sodium CMC; Carboxymethyl cellulose sodium salt; CMC-Na; E466; Carmellose sodium.

CAS: 9004-32-4.

As a cellulose ether polymer, it is described by its repeat-unit formula rather than a fixed molecular weight.

It appears as a white to off-white powder or granules.

Food grade CMC such as E466 is highly purified and must meet strict purity and heavy metal limits.

Degree of Substitution controls charge density and solubility, while viscosity controls thickening and water retention.

It is water-soluble, but standard powder can form gel-coated lumps called fish-eyes if added too quickly.

In food it stabilizes proteins, thickens sauces and syrups, and retains moisture in bakery products.

It is used as a pharmaceutical binder and in detergent and oil drilling grades.

Higher viscosity grades give stronger thickening and water retention.

Instant or slowly-hydrating grades reduce lump formation during mixing.

Store in a cool, dry, well-ventilated area in tightly closed containers to prevent moisture pickup.

Protect from moisture and direct sunlight.

Confirm appearance, degree of substitution, viscosity, moisture and heavy metals as required.

Use dust masks or respirators and eye protection during handling, and wash skin contact with soap and water.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade and specification, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Sodium Carboxymethyl Cellulose (CMC) CAS 9004-32-4?

A: CMC is a water-soluble cellulose ether derived by introducing carboxymethyl sodium groups onto the cellulose backbone. It is commonly known as cellulose gum, carmellose sodium, or E466 in food applications.
Q:
What is the difference between food grade CMC and detergent grade CMC?

A: Food grade CMC, such as E466, is highly purified and must meet strict purity and heavy metal limits. Detergent or technical grades are often less purified and are formulated for thickening, anti-redeposition, or suspension rather than consumption.
Q:
How do Degree of Substitution and viscosity affect CMC performance?

A: Degree of Substitution controls charge density and solubility behavior, while viscosity controls thickening and water retention. Higher or lower DS and viscosity grades can be selected for food, pharmaceutical, oil drilling, detergent, or other industrial formulations.
Q:
Does Sodium Carboxymethyl Cellulose dissolve easily in cold water?

A: It is water-soluble, but standard powder can form gel-coated lumps called fish-eyes if added too quickly. Instant CMC grades, slow addition under agitation, or pre-blending with dry ingredients help produce a smooth solution.
Q:
What are the main applications of Sodium CMC CAS 9004-32-4?

A: In food it stabilizes proteins, thickens sauces and syrups, and retains moisture in bakery products. It is also used as a pharmaceutical binder or disintegrant, in personal care, and in industrial grades for oil drilling and detergent systems.

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