Product:       Methanol Chromatography Grade  CH₄O

Test

Limits

 Description

Solubility

Identification

UV Transmittance:

 Acidity

Alkalinity

 Clarity and color

 Relative density

 Acetone and aldehydes

 Reducing substances

 Non-volatile substances

 Water

Assay

A colorless, clear liquid, boiling at 65°; hygroscopic.

 Miscible with water, with absolute ethanol and with ether.

A.       Relative density 0.791 to 0.793.

B.       Refractive index 1.328 to 1.330.

C.       Infrared spectrophotometry, as same as methanol RS.

Lambda                                   Transmittance  

At 225 hm                                    min 50%

At 240 hm                                    min 80%

At 265 hm                                    min 98%

Not more than 0.45 ml NaOH 0.02N is required to produce a pink color.

Not more than 3 ppm.

Clear, and colorless.

0.791 to 0.793.

Not more than 0.003% as acetone.

The pink color is not completely discharged within 5 minutes.

Not more than 10 ppm.

Not more than 0.1% w/w

Not less than 99.5%

This material has been prepared following the good manufacturing practice (G.M.P.) and conforms above specification & requirements of BP2000