Citric acid monohydrate IP 5KG Go Back


: 5949-29-1

Molecular Formula

: C6H8O7.H2O

Molecular Weight

: 210.14
Description: Colourless crystals or a white, crystalline powder; slightly efflorescent in warm, dry air.(Note: The product may cause lumps or hardening over the storage).
Solubility: Very soluble in water, freely soluble in ethanol (95%), Sparingly soluble in ether.
Identification A (By IR): IR spectra of the sample should be concomitant with IR spectra of the corresponding standadrd
Identification B (By Chemical test): A white precipitate should form.
Identification C (By Chemical test): A 10.0% w/v solution is strongly acidic.
Appearance of Solution: The solution is clear and not more intensely coloured than reference solution YS7, BYS7 or GYS7.
Arsenic (As): NMT 1ppm
Barium(Ba): Any opalescence produced is not more intense than that of mixture of 5ml of solution A and 5ml of distilled water.
Calcium (Ca): NMT 200ppm
Heavy metals: NMT 10ppm
Iron (Fe): NMT 50ppm
Chlorides: NMT 50ppm
Sulphate (SO4): NMT 150ppm
Oxalic acid: Any pink colour produced is not more intense than that produced by carrying out the test using 0.2mg of oxalic acid dissolved in 4ml of water.
Readily carbonizable substances: Any colour prodced is not more intense than that of a mixture of 1.0 ml of CCS and 9.0 ml of FCS.
Sulphated ash: NMT 0.1%
Water: 7.5% to 9.0%
Assay (Anhydrous basis): Not less than 99.0% and Not more than 101.0%
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