Citric acid is a natural occurring fruit acid, produced commercially by microbial fermentation of a carbohydrate substrate. Citric acid is the most widely used organic acid and pH-control agent in foods, beverages, pharmaceuticals and technical applications.
Citric acid anhydrous occurs as colourless 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.
1 Appearance Colourless or white crystal
2 Identification and solubility Pass the test
3 Clarity and colorless of solution 20% water solution clarity
4 Assay 99.5% to 101.0%
5 Humidity ≤0.5%
6 Sulphated ash ≤0.1%
7 Loss on drying 7.8-8.8%
8 Sulphate ≤150ppm
9 Oxalates ≤350ppm
10 Calcium ≤200ppm
11 Heavy metals ≤10ppm
12 Iron ≤50ppm