METHYLAL | ICSC: 1152 (April 2017) |
Dimethoxymethane Formal Formaldehyde dimethylacetal Methylene dimethylether |
CAS #: 109-87-5 |
UN #: 1234 |
EC Number: 203-714-2 |
ACUTE HAZARDS | PREVENTION | FIRE FIGHTING | |
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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 | PREVENTION | FIRST AID | |
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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 |
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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 DANGER
Highly flammable liquid and vapourCauses eye irritation May cause drowsiness or dizziness Transportation |
STORAGE | |
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. | |
PACKAGING | |
Airtight. |
METHYLAL | ICSC: 1152 |
PHYSICAL & CHEMICAL INFORMATION | |
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Physical State; Appearance
Physical dangers
Chemical dangers
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Formula: C3H8O2 / CH2-(OCH3)2 |
EXPOSURE & HEALTH EFFECTS | |
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Routes of exposure
Effects of short-term exposure
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Inhalation risk
Effects of long-term or repeated exposure
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OCCUPATIONAL EXPOSURE LIMITS |
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TLV: 1000 ppm as TWA. MAK: 1600 mg/m3, 500 ppm; peak limitation category: II(2); pregnancy risk group: C |
ENVIRONMENT |
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Environmental effects of the substance have been adequately investigated, but no significant effects have been found. |
NOTES |
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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 ICSCs 0057 and 0275. |
ADDITIONAL INFORMATION | ||
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EC Classification |
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See Also: Toxicological Abbreviations