nature
Solubility: easily soluble in water, insoluble in organic solvents (such as ethanol, acetone)
01
Viscosity: CMC with different degrees of substitution and molecular weight has different viscosity ranges (low, medium, high viscosity)
02
Stability: Good acid and alkali resistance, but may degrade under strong acid (pH < 3) or strong alkaline (pH > 10) conditions.
03
Film-forming property: It can form transparent films, suitable for coating applications.
04
Production process
Raw material preparation: Natural cellulose (such as cotton linters, wood pulp) as raw materials
01
Alkalinization treatment: Cellulose reacts with NaOH to produce alkali cellulose.
02
Etherification reaction: Alkali cellulose reacts with sodium chloroacetate (ClCH₂COONa) to introduce carboxymethyl groups.
03
Neutralization and purification: pH adjustment, removal of by-products (e.g. NaCl)
04
Drying and crushing: obtain powdered CMC product.
05
Application Areas
Thickeners & Stabilizers: Used in ice cream, yogurt, sauces, etc.
Tablet Binders: Improving Drug Formability
Medical dressings: promote wound healing.
Drilling fluid additives: increase mud viscosity and prevent well wall collapse.
Printing and dyeing paste: improving dye uniformity
Toothpaste thickener: improves paste stability.
Safety and environmental protection
Safety:
Food-grade CMC is certified as a safe additive (E466) by FDA and EFSA.
Non-carcinogenic and non-mutagenic.
Environmental protection:
Biodegradable, in line with the trend of green chemistry.
Wastewater discharge needs to be controlled during the production process
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