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Methanol Absolute 99.5% AR Reagent

Cas Number:67-56-1
Formula:CH4O
Molar Mass:32.04
EC Number:200-659-6

Quantity:
  • AR
  • LABOR
  • 128202104

Methanol Absolute 99.5% AR Reagent


Cas Number:67-56-1

Formula:CH4O

Molar Mass:32.04

EC Number:200-659-6


Physicochemical properties:

It is same as methanol but with very little moisture.


Usage:

It is used to prepare Karl Fischer reagent for the determination of trace moisture in alcohols, saturated hydrocarbons, benzene, chloroform and pyridine.


Packing:

500ml/25L/200L




Item of Analysis

Standard

Assay,%

99.5 min

Density(20℃),g/ml

0.791~0.793

Miscibility with water

to pass test

Evaporating leavings,%

0.001 max

Moisture,%

0.05 max

Acidity (as H+) mmol/g

0.0004 max

Alkalinity (as OH-) mmol/g

0.00008 max

Carboxide(as CO),%

0.005 max

Really carbonized substances

to pass test

Substance reducing potassium permanganate(as O),%

0.0005 max


Symbol 

Signal word 

Danger

Hazard statement

H225


H301+H311+H331

H370

Precautionary statements—Prevention

P210


P233


P240


P241


P242


P243


P260


P264


P270


P271


P280

Precautionary statements—Response

P301+P310+P330


P303+P361+P353


P304+P340+P311


P308+P311


P361+P364


P370+P378

Precautionary statements—Storage

P403+P233


P403+P235


P405

UN No.

1230

Hazard Class

3+6.1

Package Group

II

Flashpoint

9.7 °C

Boiling point

64.7°C

Freezing point

-98°C



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