CITRIC ACID MONOHYDRATE
Properties:
At room temperature, citric acid is a white crystalline powder. It can exist either in an anhydrous (water-free) form or as a monohydrate. The anhydrous form crystallizes from hot water, whereas the monohydrate forms when citric acid is crystallized from cold water. The monohydrate can be converted to the anhydrous form by heating it above 74 c. Citric acid also dissolves in absolute (anhydrous) ethanol (76 parts of citric acid per 100 parts of ethanol) at 15 degrees celsius. In chemical structure, citric acid shares the properties of other carboxylic acids. When heated above 175 c, it decomposes through the loss of carbon dioxide and water.
Description:
Colorless or white crystalline powder
General characteristic:
Molecular Formula: C6H8O7 · H2O
Molecular Weight: 210.14
Specification:
Characters: A white, crystalline powder, colorless crystals or granules
Identification: To pass test
Appearance of solution: To pass test
Readily carbonisale substances: To pass test
Oxalic acid: Max. 350 ppm
Aluminium: Max. 0.2 ppm
Sulphates: Max. 150 ppm
Heavy metals: Max. 10 ppm
Water: 7.5%~9.0%
Sulphated ash: Max. 0.1%
Bacterial endotoxins: To pass test
Assay: 99.0%~100.5%
Application:
Citric acid monohydrate is mainly used as an acidulating, flavoring and preservative in foods and beverages. It is also used as an antioxidant, plasticizer and detergent builder.
Package:
The packing of Citric acid monohydrate includes 25kg net, 500kg net and 1000kg net per bag with or without pallet.
Storage:
Kept in a light-proof, well-closed, dry and cool place.
Standard specifications:
BP93, BP98, USP2003, USP24, USP26, E330