334-88-3
Diazomethane
CAS: 334-88-3
Molecular Formula: CH2N2
334-88-3 - Names and Identifiers
| Name | Diazomethane |
| Synonyms | DIAZIRINE azimethane Diazomethane azimethylene Methane, diazo-(8CI,9CI) |
| CAS | 334-88-3 |
| EINECS | 206-382-7 |
334-88-3 - Physico-chemical Properties
| Molecular Formula | CH2N2 |
| Molar Mass | 42.03998 |
| Density | 1.45 g/cm3 |
| Melting Point | -145° |
| Boling Point | bp -23° |
| Appearance | Yellow gas |
| Odor | Musty odor (no accepted threshold value) |
| Exposure Limit | TLV-TWA 0.2 ppm (0.38 mg/m3 ) (ACGIH)PEL-TWA 0.2 ppm (0.38 mg/m3 ) (OSHA). |
| Refractive Index | 1.4180 (estimate) |
334-88-3 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | 45 - May cause cancer |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | 1953 |
| Hazard Class | 2.3 |
| Toxicity | LCLO inhal (cat) 175 ppm (10 min)PEL (OSHA) 0.2 ppm (0.4 mg/m3)TLV-TWA (ACGIH) 0.2 ppm (0.4 mg/m3) |
334-88-3 - References
| (IARC) carcinogen classification | 3 (Vol. 7, Sup 7) 1987 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| category | explosive articles |
| toxicity grade | high toxicity |
| Acute toxicity | inhalation-cat LC50: 175 PPM/10 months |
| explosive hazard characteristics | high heat, vibration, impact, and friction burst |
| flammability hazard characteristics | toxic NOx smoke from combustion |
| storage and transportation characteristics | light weight; Warehouse ventilation, away from open flame, high temperature, sunlight; And oxidant, combustible, separate storage of food raw materials |
| fire extinguishing agent | misted water, dry powder, carbon dioxide, stone powder |
| Occupational Standard | TWA 0.4 mg/m3; Tel 1.0 mg/m3 |
| spontaneous combustion temperature | 150°C; impure material expandes at lower temperature |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-and health-threatening concentration | 2 ppm |
Last Update：2024-04-10 22:29:15
