Phenol USP/Ph.Eur 500GM Go Back


: 108-95-2

Molecular Formula

: C6H5OH

Molecular Weight

: 94.11
Description: Colorless to light pink or faintly yellowish, interlaced or separate, needle-shaped crystals or white to light pink, crystalline mass. has a characteristic odor. Gradually darkens on exposure to light and air.
Solubility: Soluble in water, very soluble in alcohol, in ethanol (96%) in glycerin, in chloroform, in ether, in methylene chloride and in fixed and volatile oils; sparingly soluble in mineral oil.
Identification (By chemical test 1): A white precipitate should form which should dissolve at first but become permanent as more of the reagent add
Identification (By chemical test 2): A blue color should develop and become progressively more intense
Identification (By chemical test 3): A violet color should produce which should disappear on addition of 2-propanol
Assay (on Anhydrous basis): 99.00%-100.50%
Limit of Nonvolatile residue /Residue on evaporation: Not more than 0.05%
Clarity of solution and reaction: A solution is clear and is neutral or acid to litmus paper.
Appearance Solution: Solution should be clear and not more intensely coloured than reference solution B6
Acidity: Yellow solution.
Congealing temperature: Not lower than 39°C
Freezing point: Min. 39.5°C
Water: Not more than 0.5%
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