Diazomethane |
Synonyms & Trade Names Azimethylene, Azomethylene, Diazirine |
CAS No. 334-88-3 |
RTECS No. PA7000000 |
DOT ID & Guide |
FormulaCH2N2 |
Conversion 1 ppm = 1.72 mg/m3 |
IDLH 2 ppm
See: 334883 |
Exposure Limits NIOSH REL: TWA 0.2 ppm (0.4 mg/m3)
OSHA PEL: TWA 0.2 ppm (0.4 mg/m3) |
Measurement Methods
NIOSH 2515
See: NMAM or OSHA Methods |
Physical Description Yellow gas with a musty odor. [Note: Shipped as a liquefied compressed gas.] |
MW: 42.1 |
BP: -9°F |
FRZ: -229°F |
Sol: Reacts |
VP: >1 atm |
IP: 9.00 eV |
|
Fl.P: NA (Gas) |
UEL: ? |
LEL: ? |
RGasD: 1.45 |
|
| Flammable Gas [EXPLOSIVE!] |
Incompatibilities & Reactivities Alkali metals, water, drying agents such as calcium arsenate [Note: May explode violently on heating, exposure to sunlight, or contact with rough edges such as ground glass.] |
Exposure Routes inhalation, skin and/or eye contact (liquid) |
Symptoms irritation eyes; cough, short breath; headache, lassitude (weakness, exhaustion); flush skin, fever; chest pain, pulmonary edema, pneumonitis; asthma; liquid: frostbite |
Target Organs Eyes, respiratory system |
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Personal Protection/Sanitation (See protection codes)
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: When wet (flammable)
Change: No recommendation
Provide: Frostbite wash |
First Aid (See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support
|
Respirator Recommendations NIOSH/OSHA Up to 2 ppm:
(APF = 10) Any supplied-air respirator*
(APF = 50) Any self-contained breathing apparatus with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 1256 See MEDICAL TESTS: 0068 |
