|CAS #: 109-99-9||Tetramethylene oxide
| UN #: 2056
| EINECS #: 203-726-8
|ACUTE HAZARDS||PREVENTION||FIRE FIGHTING|
|FIRE & EXPLOSION||Highly flammable. Vapour/air mixtures are explosive.||NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.||Use water in large amounts, powder, alcohol-resistant foam, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.|
|PREVENT GENERATION OF MISTS!|
|SYMPTOMS||ACUTE HAZARDS||FIRST AID|
|Inhalation||Cough. Dizziness. Headache. Nausea. Sore throat. Unconsciousness.||Use ventilation, local exhaust or breathing protection.||Fresh air, rest. Refer for medical attention.|
|Skin||Dry skin. Redness. Pain.||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||See Inhalation.||Do not eat, drink, or smoke during work.||Rinse mouth. Refer for medical attention .|
|SPILLAGE DISPOSAL||CLASSIFICATION & LABELLING|
|Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Ventilation. 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.||
According to UN GHS Criteria
|Fireproof. See Chemical Dangers. Store only if stabilized.|
|PHYSICAL & CHEMICAL INFORMATION|
Physical State; Appearance
Formula: C4H8O / (CH2)3CH2O
|EXPOSURE & HEALTH EFFECTS|
Routes of exposure
Effects of short-term exposure
Effects of long-term or repeated exposure
|Occupational exposure limits|
TLV: 50 ppm as TWA; 100 ppm as STEL; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans).
MAK: 150 mg/m3, 50 ppm; peak limitation category: I(2); skin absorption (H); carcinogen category: 4; pregnancy risk group: C.
EU-OEL: 150 mg/m3, 50 ppm as TWA; 300 mg/m3, 100 ppm as STEL; (skin)
|P-Cresol or hydroquinone are commonly used stabilizers.
Use of alcoholic beverages enhances the harmful effect.
An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert.
The odour warning when the exposure limit value is exceeded is insufficient.
Check for peroxides prior to distillation; eliminate if found.
Symbol: F, Xi; R: 11-19-36/37; S: (2)-16-29-33
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See Also: Toxicological Abbreviations