Benzoic acid IP 500GM Go Back


: 65-85-0

Molecular Formula


Molecular Weight

: 122.12
Description: Colourless, light crystals, scales or needles.
Solubility: Freely soluble in ethanol(95%), in chloroform and in ether; slightly soluble in water but soluble in boiling water, it soluble in fixed oil.
Identification A (By Chemical test): A buff coloured precipitate should produce.
Identification B (by UV absorbance test): Absorbance maxima should be only at 225nm and absorbance at 225 nm should be about 0.8.
Identification C (By Chemical test): Solution should be acidic to methyl red solution
Identification D (By melting point): 121° C - 123°C
Appearance of solution: Clear and colourless solution.
Arsenic (As): NMT 2ppm
Heavy metals: NMT 10ppm
Readily oxidizable substances: Not more than 0.5ml of 0.1M potassium permanganate should be require.
Readily carbonizable substances: The colour of the solution should not be more intense than that of reference solutionYS5.
Cinnamic acid: No odour of benzaldehyde should develop.
Chlorinated compounds: Any opalescence produced in the sample solution should not more intense than standard.
Sulphated ash: NMT 0.1%
Water: NMT 0.7%
Assay: 99.5% - 100.5% on anhydrous basis.
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