Methanol Ph.Eur 2.5LT Go Back

CASR

: 67-56-1

Molecular Formula

: CH3OH

Molecular Weight

: 32.04
Specifications  
Appearance: Clear, colourless, volatile, hygroscopic liquid.
Solubility: Miscible with water and with methylene chloride.
Boiling point: About 64°C
Identification A (By Refractive index, 20±0.5°C): 1.328 to 1.330
Identification B (By IR): IR spectra of the sample should be concomitant with reference spectrum of methanol
Acidity or alkalinity: Not more than 0.9ml of 0.01M sodium hydroxide is required to change the colour of the indicator to pink.
Relative density (20°C): 0.791 to 0.793
UV absorbance profile (10mm cell) at 230nm: 0.15 max
UV absorbance profile (10mm cell) at 250nm: 0.05 max
UV absorbance profile (10mm cell) at 270nm: 0.02 max
UV absorbance profile (10mm cell) at 290nm: 0.01 max
Impurity A (Benzene): 2ppm v/v max
Related substances (Any impurity): 0.1% max
Related substances (Total impurity): 0.3% max
Reducing substances: The pink color should not be completely discharge within 5 min.
Residue on evaporation: 10ppm max
Water: 0.1% max
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