Methanol
Physical Data
German Version French Version
 

H3C-OH
methyl alcohol  CH4O  M 32,04 g/Mol
GHS-symbol inflammableGHS-symbol: toxicGHS-Symbol: Target Organ Toxicity

Production

From ending of the 18th century until about 1920 methanol was produced nearly exclusively by dry destillation (pyrolysis) of Wood in absence of oxygen. Afterwards methanol was produced by a synthetic gas mixture (CO/H2 and CO2/H2 deriving from the gasification of charcoal) by high pressure hydrogenation. Today methanol is produced by catalytic low pressure hydrogenation with copper catalysts at 50-100 bar and a temperature of 200-300 oC.

Usage

Production of formaldehyde and methyl esters as well as a polar solvent.

Physiology

Oral applicated as well as inhalated methanol is poissoness. Symptoms: weak heart or muscle, convulsions, shivering, reduction of vision power up to blindness. Methanol in alcoholic beverages is only reduced after falling short of a blood alcohol concentration of about 30 mg/dl, because of a elimination mechanism similar to Ethanol by the ADH system. Delta alcoholics according Jellinek with constant blood alcohol levels accumulate the methanol in their blood. Results above 10 mg/l indicates abused consumption.

Custom Search

 

 

 

Last Update: 11/04/2010 - IMPRINT - FAQ