Yellow gas with a musty odor.
Powerful methylating agent for acidic compound such as carboxylic acids, phenols, enols.
Registry Numbers and Inventories.
EC Index Number
Carcinogenic Category 2
Swiss Giftliste 1
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
Vapor density (air=1)
1.45 g/cm3 (20 C)
Solubility in water
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Cold-insulating gloves. Face shield or eye protectin in combination with breathing protection.
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.
Strong oxidizing agents.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use agent most appropriate to extinguish fire.
TLV: 0.2 ppm; 0.34 mg/m3 (ACGIH 1993-1994). OSHA PEL: TWA 0.2 ppm (0.4 mg/m3) NIOSH REL: TWA 0.2 ppm (0.4 mg/m3) NIOSH IDLH: 2 ppm
The toxological properties of this substance have not been fully investigated.
Symptoms: irritation eyes; cough, shortness breathing; headache, fatigue; flush skin, fever; chest pain, pulmonary edema, pneumonitis; asthma; liquid: frostbite Target Organs: Eyes, respiratory system.
Redness, burning sensation, pain, serious frostbite. See inhalation.
Redness, pain. See inhalation.
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.
USCG CHRIS Code