Water Treatment Chemicals


Citric acid is a naturally 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 monohydrate occurs as colourless crystals or as white, crystalline powder with a strongly acidic taste. It is efflorescent in dry air, very soluble in water, freely soluble in ethanol (96 %) and sparingly soluble in ether.

Citric acid monohydrate is non-toxic and has a low reactivity. It is chemically stable if stored at ambient temperatures. Citric acid monohydrate is fully biodegradable and can be disposed of with regular waste or sewage.

Synonym 2-Hydroxy-1,2,3-propanetricarboxylic acid monohydrate
Application A useful buffer component for antigen and epitope unmasking
CAS Number 5949-29-1
Purity ≥98%
Molecular Weight 210.14
Molecular Formula C6H8O7•H2O

Technical Information
Physical State Solid
Solubility Soluble in water (59.2 g/100 ml) at 20 °C, ethanol, ether, and water (84.0 g/100 ml) at 100 °C.
Storage Desiccate at room temperature
Melting Point 153 °C(anhydrous)
Boiling Point 558.5 °C at 760 mmHg (Predicted)
Density: 1.54 g/cm3