China Industry Grade Carboxymethyl Cellulose Powder

CMC with a degree of substitution (DS) of 0.9-1.2 has good water solubility and stable viscosity, making it suitable for the food and cosmetics industries. CMC with a DS of 0.6-0.8 has poor water solubility but is lower in cost and is mostly used in industrial-grade scenarios (such as papermaking and coatings). The specific degree of substitution specification should be selected based on the product formulation requirements.

Food-grade CMC has been certified by authoritative organizations such as the Codex Alimentarius Commission (CAC) and the US FDA. In my country, it complies with the requirements of GB 1886.232-2021 'National Food Safety Standard Food Additive Sodium Carboxymethyl Cellulose'. Reasonable use will not cause harm to human health, and there is no special limit on the daily intake (ADI).

It is mainly affected by concentration (the higher the concentration, the greater the viscosity), temperature (the higher the temperature, the lower the viscosity), pH value (the viscosity is stable in a neutral or weakly alkaline environment, and strong acids/strong bases will destroy the structure and cause the viscosity to decrease), and electrolytes (high concentrations of salts will reduce viscosity). Conditions need to be adjusted according to the scenario during use.

If there is only slight clumping (no discoloration or odor), the lumps can be crushed and dissolved. If the solution is transparent and free of impurities, it will not affect the use. If there is severe clumping and accompanied by discoloration and odor, it means that it may have absorbed moisture and deteriorated. Do not use it.

The shelf life of unopened products is 24 months from the date of production. After opening, they must be sealed immediately to avoid prolonged exposure to air to prevent moisture absorption and caking.