Anhydrous Citric Acid

Anhydrous Citric Acid

(Sodium Citrate)

一.Product description

Sodium citrate is an organic acid sodium salt which is white granules or white crystalline powder, often containing a molecule of crystal water, odorless, extremely sour taste, soluble in water, alcohol, and ether. By controlling the appropriate temperature during crystallization can obtain anhydrous citric acid. Aqueous solutions are acidic.


Physical and chemical properties:Relative density 1.542, melting point 153°C (water loss), refractive index 1.493~1.509, solution crystallization critical temperature 36.6°C (crystallization above 36.6°C is anhydrous citric acid,below 36.6°C is citric acid monohydrate).


  1. It is used in the cement and gypsum industries as a retardant forsetting time agent. The additional amount is small, and the effect is noticeable.
  2. In the food and beverage industry, it is used as a sour agent, acidity agent, flavoring agent, and preservative.
  3. Used as antioxidants, plasticizers, and detergents in the chemical industry, cosmetics industry, and washing industry.

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