|ACUTE HAZARDS / SYMPTOMS||PREVENTION||FIRST AID / FIRE FIGHTING|
|FIRE||Highly flammable.||NO open flames, NO sparks and NO smoking.||Use water in large amounts, powder, alcohol-resistant foam, carbon dioxide.|
|EXPLOSION||Vapour/air mixtures are explosive.||Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.||In case of fire: keep drums, etc., cool by spraying with water.|
|Inhalation||Cough. Dizziness. Drowsiness. Headache. Sore throat. Unconciousness.||Use ventilation, local exhaust or breathing protection.||Fresh air, rest. Refer for medical attention.|
|Skin||MAY BE ABSORBED! Dry skin. Redness. Pain. Further see Inhalation.||Protective gloves.||Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .|
|Eyes||Redness. Pain.||Wear safety spectacles.||First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.|
|Ingestion||Abdominal pain. Nausea. Vomiting. Further see Inhalation.||Do not eat, drink, or smoke during work.||Rinse mouth. Refer for medical attention .|
|PACKAGING & LABELLING|
|Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer. Personal protection: self-contained breathing apparatus.||
UN Hazard Class: 3; UN Pack Group: II
|EMERGENCY RESPONSE||SAFE STORAGE|
Transport Emergency Card: TEC (R)-30S1234 or 30GF1-I+II.
NFPA Code: H2; F3; R2.
|Fireproof. Separated from strong oxidants. Cool. Keep in the dark. Well closed. Store only if stabilized.|
Physical State; Appearance
VERY VOLATILE COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.
Occupational exposure limits
Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour and through the skin.
Effects of short-term exposure
Effects of long-term or repeated exposure
|PHYSICAL PROPERTIES||ENVIRONMENTAL DATA|
Boiling point: 42°C
Melting point: -105°C
Relative density (water = 1): 0.86
Solubility in water, g/100ml at 20°C: 33
Vapour pressure, kPa at 20°C: 44
Relative vapour density (air = 1): 2.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.7
Flash point: °C c.c. (o.c.)
Auto-ignition temperature: 237°C
Explosive limits, vol% in air: 1.6-17.6
Octanol/water partition coefficient as log Pow: 0
An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert.
Check for peroxides prior to distillation; eliminate if found.
Methylal is metabolized to methanol and formaldehyde and may exhibit the same toxic reactions as these compounds.
See also ICSC0057 Methanol and 0275 Formaldehyde.
Card has been partly updated in April 2005.
See sections Occupational Exposure Limits, Emergency Response.
See Also: Toxicological Abbreviations