Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Ashland Ambergum 1221 Sodium Carboxymethyl Cellulose

Ashland Ambergum 1221 is a high-viscosity sodium carboxymethyl cellulose (CMC) polymer designed for thickening, suspension, and stabilization in aqueous systems. Part of Ashland’s Ambergum CMC series, it offers excellent water solubility, pH stability, and rheology control—ideal for pharmaceuticals, food, and personal care formulations.
  • ashland ambergum 1221 sodium carboxymethyl cellulose_7278489f
  • ashland ambergum 1221 sodium carboxymethyl cellulose_7278489f

Features Of Ashland Ambergum 1221 Sodium Carboxymethyl Cellulose

  1. High-viscosity, low-substitution sodium carboxymethyl cellulose (CMC) optimized for thickening and suspension stability.

  2. Excellent water solubility with rapid hydration and minimal lump formation under moderate shear.

  3. Premium salt tolerance—maintains viscosity performance in formulations containing electrolytes up to 2% NaCl.

  4. Consistent rheological profile across pH 4–10, supporting broad formulation compatibility.

  5. Non-ionic character ensures compatibility with anionic surfactants and cationic polymers in complex systems.

Typical Applications Of Ashland Ambergum 1221 Sodium Carboxymethyl Cellulose

  1. Oilfield drilling fluids—used as viscosifier and fluid-loss control agent in water-based muds.

  2. Architectural coatings—provides rheology control, sag resistance, and brushability in latex paints.

  3. Agrochemical suspensions—stabilizes solid active ingredients in SC (suspension concentrate) formulations.

  4. Textile printing pastes—delivers sharp pattern definition and easy wash-off post-curing.

  5. Ceramic tile adhesives—enhances open time, workability, and non-sag performance on vertical substrates.

Specifications Of Ashland Ambergum 1221 Sodium Carboxymethyl Cellulose

Chemical TypeSodium carboxymethyl cellulose (CMC), low-substitution grade
Product FormFree-flowing white to off-white granular powder
AppearanceOdorless, fine granules with uniform particle size distribution
Viscosity (2% aqueous solution, 25°C, Brookfield RV, spindle #3, 20 rpm)1,800–2,400 mPa·s
pH (2% aqueous solution)6.5–8.5
Moisture Content (by loss on drying at 105°C)≤8.0%
Substitution (DS)0.60–0.75
Primary ApplicationsThickener, suspending agent, rheology modifier in industrial and specialty formulations


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