|CAS #: 109-87-5||Dimethoxymethane
| UN #: 1234
| EINECS #: 203-714-2
|ACUTE HAZARDS||PREVENTION||FIRE FIGHTING|
|FIRE & EXPLOSION||Highly flammable. Heating will cause rise in pressure with risk of bursting. Vapour/air mixtures are explosive. Risk of fire and explosion on contact with strong oxidizing agents or strong bases.||NO open flames, NO sparks and NO smoking. NO contact with strong oxidizing agents or strong bases. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.||Use water spray, dry powder, carbon dioxide, alcohol-resistant foam. In case of fire: keep drums, etc., cool by spraying with water.|
|SYMPTOMS||ACUTE HAZARDS||FIRST AID|
|Inhalation||Cough. Dizziness. Drowsiness. Headache. Sore throat. Unconsciousness.||Use ventilation, local exhaust or breathing protection.||Fresh air, rest. Refer for medical attention.|
|Skin||Dry skin.||Protective gloves.||First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again.|
|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. Do NOT induce vomiting. Refer for medical attention .|
|SPILLAGE DISPOSAL||CLASSIFICATION & LABELLING|
|Consult an expert! Personal protection: filter respirator for organic vapours of low boiling point adapted to the airborne concentration of the substance. Remove all ignition sources. Cover the spilled material with sand or other non-combustible material. Collect leaking liquid in covered containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.||
According to UN GHS Criteria
DANGERHighly flammable liquid and vapour
Causes eye irritation
May cause drowsiness or dizziness
|Fireproof. Separated from strong oxidants and strong bases. Cool. Keep in the dark. Well closed. Store only if stabilized. Store in an area without drain or sewer access.|
|PHYSICAL & CHEMICAL INFORMATION|
Physical State; Appearance
Formula: C3H8O2 / CH2-(OCH3)2
|EXPOSURE & HEALTH EFFECTS|
Routes of exposure
Effects of short-term exposure
Effects of long-term or repeated exposure
|Occupational exposure limits|
TLV: 1000 ppm as TWA.
MAK: 3200 mg/m3, 1000 ppm; peak limitation category: II(2); pregnancy risk group: C; (DFG 2017)
|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.
Environmental effects from the substance have been investigated but none have been found.
See ICSCs 0057 and 0275.
|All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.|
See Also: Toxicological Abbreviations