Citric Acid Anhydrous USP/Ph.Eur 25KG Go Back

CASR

: 77-92-9

Molecular Formula

: C6H8O7

Molecular Weight

: 192.13
Specifications  
Appearance/Description: Colorless, translucent crystals or white granular to fine crystalline powder
Solubility: Very soluble in water, freely soluble in ethanol (96%),very slightly soluble in ether.
Melting point: About 153°C, with decomposition.
Identification (By IR): IR spectra of the sample should be concomitant with IR spectra of standard
Identification (By chemical test 1): The solution should be strongly acidic.
Identification (By chemical test 2): A red colour should develop.
Identification (By chemical test 3): A white precipitate should form.
Identification (By Water): 1.0% max
Appearance of Solution: The solution should be clear and colourless or not more intensely coloured than reference solution Y7, BY7 or GY7.
Clarity of solution: The sample solution should show the same clarity as that of water or its opalescence is not more pronounced than standard suspension.
Colour of solution: The sample solution should not more intensely colored than standard solutions
Readily carbonizable substances: The solution should not be more intensely coloured than reference standard
Oxalic acid: 360ppm max.
Sulfates: 150ppm max
Water: 1.0% max
Sulphated ash / Residue on ignition: 0.1% max
Assay (Anhydrous basis): 99.5%-100.5%
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