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Anhydrous citric acid [character] Colorless crystal or white crystalline powder. Molecular formula: C6H8O7 Molecular weight: 192.1 In English [control] Citri Acid Anhydrous, citric acid anhydrous BP, citric acid anhydrous [main use] Mainly used in food, beverage industry as sour agent, flavoring agent and preservative, preservative. Still in the chemical industry, cosmetic industry and detergent industry as an antioxidant, plasticizer, detergent [packing] 25 kg bags, 25 pounds of bag, 1000kg bag packaging tray [storage] Storage to avoid light, sealed, cool and dry. [quality standard BP98, E330, USP24, enterprise standard Physical and chemical properties: the relative density is 1.542, the melting point of 153 DEG C (dehydration), refractive index 1.493~1.509 A colorless or white crystalline translucent particles, or white crystalline powder, often with a molecular crystal water, no smell, taste very acid, soluble in water, alcohol. The calcium salt in cold water than in hot water and easy to dissolve, this property often used for the identification and separation of citric acid. Crystallization control suitable temperature can obtain anhydrous citric acid. The acidic aqueous solution. Slightly weathering in dry air, deliquescent in wet air. More than 175 DEG C exothermic decomposition of water and carbon dioxide.