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CMC — Sodium Carboxymethyl Cellulose

Versatile anionic cellulose ether that thickens, binds and stabilizes — from drilling fluids and ceramics to detergents and water-based systems.

CAS No. 9004-32-4 HS Code 3912.31 (CN export 39123100) EINECS 618-378-6

One Polymer, Many Industrial Roles

CMC dissolves in water to form viscous, clear solutions with strong suspension power — available in viscosity and purity grades for every industry.

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Cold-water soluble — easy to add and dissolve with standard agitation.
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Strong thickening & suspension — stabilizes slurries, muds and dispersions.
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Salt-resistant grades — HV / LV types engineered for drilling fluids.
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Purity options — technical through food-grade on request.
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Cost-effective — economical water retention and binding at low dosage.
CMC sodium carboxymethyl cellulose powder sample
Technical Data

Typical Specifications

PropertyTypical Value
AppearanceWhite to yellowish powder or granules
Ionic typeAnionic
Degree of substitution (DS)0.60 ~ 0.95 (per grade)
Viscosity (1% or 2% solution)Low / medium / high (per grade)
PurityTechnical grade; food-grade on request
Moisture≤ 8.0%
pH (1% solution)6.5 ~ 8.5
Packaging25 kg PP woven bag with PE lining

Values are typical ranges — exact specification sheets per grade are available on request.

Grade Selection

Pick the Right CMC for Your Application

Tell us your process, required viscosity and purity level — we will recommend the right CMC grade and send samples.

For Oil Drilling

Drilling-Grade CMC (HV / LV)

Raises mud viscosity and controls fluid loss in water-based drilling fluids, with strong salt tolerance.

  • High-viscosity (HV) & low-viscosity (LV) types
  • Effective filtration control
  • Stable performance in brine muds
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For Ceramics & Tile

Ceramics-Grade CMC

Strengthens green bodies and suspends glaze slurries for smoother, more consistent ceramic production.

  • Green-body strength improvement
  • Glaze suspension & adhesion control
  • Clean burn-out during firing
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For Water-Based Systems

Industrial & Detergent Grade

Thickens and suspends in detergents, cleaners, paints and paper-coating systems at an economical cost.

  • Efficient thickening & anti-redeposition
  • Suspends solids in liquid products
  • Economical dosage in bulk formulas
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Applications

Where CMC Works Best

CMC is the most widely used cellulose ether — "the MSG of industry" — serving drilling, tile adhesive, wall putty, detergents and coatings.

Oil drilling fluids application

Oil and Gas Drilling

Largest-volume use. Viscosifier and fluid-loss reducer for water-based mud systems, onshore and offshore.

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Tile adhesive application with CMC

Tile Adhesive

Water retention and slip control for thin-bed tile adhesive — keeps ceramic and porcelain tiles adjustable and locked in place.

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Wall putty application with CMC

Wall Putty

Water retention and adhesion for interior and exterior wall putty and skim coats — better trowel feel and crack resistance.

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Detergent and personal care products

Detergents

Anti-redeposition agent in detergents; thickener and binder for toothpaste, creams and personal-care formulas.

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Water-based coatings application with CMC

Coating

Thickener, anti-settling and dispersing agent for water-based paints, printing inks and paper coating colours.

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Also used in: paper & textile sizing · textile printing paste · mining flotation · iron ore pellet binder · battery electrode binder · food & pharma grade.

Request CMC Quotation & Samples

Tell us your application, viscosity and purity requirement — we will recommend the right grade.

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