Methylene chloride Ph.Eur 25LT Go Back

CASR

: 75-09-2

Molecular Formula

: ClCH2Cl

Molecular Weight

: 84.93
Specifications  
Appearance: Clear,colourless, volatile liquid.
Solubility: Sparingly soluble in water, miscible with ethanol (96%)
Identification A (Relative density, 20°C): 1.320 to 1.332
Identification B (Refractive index, 20±0.5°C): 1.423 to 1.425
Identification C (By IR): IR spectra of the sample should be concomitant with IR spectra of standard.
Identification D (By chemical test): A voilet color should produce.
Identification E (By Chemical test for chloride): A curdled, white precipitate should form which dissolves in ammonia
Acidity: Not more than 0.15 mL of 0.1M sodium hydroxide should require to change the color of indicator to blue
Relative density, 20°C: 1.320 to 1.332
Refractive index, 20°C ± 0.5°C: 1.423 to 1.425
Ethanol, 2-methylbut-2-ene and volatile impurities: Ethanol: 2.0% v/v max
Ethanol, 2-methylbut-2-ene and volatile impurities: 2-methylbut-2-ene: 300 ppm v/v max.
Impurity A (Carbon tetrachloride): 10 ppm v/v max
Impurity B (Chloroform): 50ppm v/v max
Sum of impurities other than ethanol and 2-methylbut-2-ene: 0.1% v/v max
Free Chlorine (Cl): No blue colour should develop
Water: 0.02% m/m max
Residue on evaporation: 20ppm max
Appearance of solution: Clear and colourless.
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