Metacresol CDMF PARENTEX 500ML Go Back

CASR

: 108-39-4

Molecular Formula

: CH3C6H4OH

Molecular Weight

: 108.14
Specifications  
Description: Colorless or yellowish to brownish-yellow or pinkish, highly refractive liquid, becoming darker with age and on exposure to light. A saturated solution of it is neutral or only slightly acid to litmus
Solubility: Sparingly soluble in water, usually forming a cloudy solution; dissolves in solutions of fixed alkali hydroxides. Miscible with alcohol, with ether with glycerin, with ethanol (96%) and with methylene chloride
Identification A (By IR): IR spectra of the sample should be concomitant with IR spectra of the corresponding stanard
Identification B (By GC Chromatogram): The retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in the assay
Relative density: About 1.03
Melting point: About 11°C
Boiling point: About 202°C
Appearance of solution: Freshly prepared solution should not more opalescent than reference suspension III and not more intensely colored than reference solution BY7
Assay (By GC): 98.0%-102.0%
Organic Impurities / Related substances (Orthocresol): NMT 0.5%
Organic Impurities / Related substances (Paracresol): NMT 0.5%
Organic Impurities/ Related substances (Any unspecified impurity): NMT 0.1%
Organic Impurities / Related substances (Total impurities): NMT 1.0%
Clarity of Solution A (By Chemical Test): A clear solution
Clarity of Solution B (By Chemical Test): A clear solution
Acidity: Not more than 0.5ml of 0.01 M sodium hydroxide should require to change the colour of the indicator to yellow
Residue on evaporation: NMT 0.1%
Bacterial endotoxins: NMT 0.5 EU/mg
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