Citric acid is a natural fruit acid, produced commecially by microbial fermentation of a carbohydrate substrate.
Citric acid is the most widely used organic acid and pH-control agent in foods, beverage, pharmaceutical and technical application.

Citric acid anhydrous occurs as colorless crystals or as white, crystalline powder with a strongly acidic taste. It is very soluble in water, freely soluble in ethanol (96%) and sparingly soluble in ether.
Citric acid anhydrous is non-toxic and has a low reactivity. It is chemically stable if stored at ambient temperatures. Citric acid anhydrous is fully biodegradable and can be disposed of with regular waste or sewage.
Items | Specification |
Appearance | Colorless or white crystals granules or powders, extremely soluble in water, easy soluble in ethanol |
Solution color & clarity | Conform |
Assay (%) | 99.5-100.5 |
Light Transmittance (%) | ≥ 95.0 |
Moisture (%) | 7.5-9.0 |
Readily Carbonisablle Substance | ≤ 1.0 |
Sulphated Ash (%) | ≤ 0.05 |
Chloride (%) | ≤ 0.005 |
Sulphate (%) | ≤ 0.015 |
Oxalate (%) | ≤ 0.01 |
Calcium (%) | ≤ 0.02 |
Iron (mg/kg) | ≤ 5 |
Arsenic (mg/kg) | ≤ 1 |
Lead | ≤ 0.5 |
Water Insoluble Substances | Filtration time not more than 1 min; Filter membrane basically doesn't change color; Visual mottled particles not more than 3. |
