DIAZOMETHANE†
| CAS # | 334-88-3 |
|---|---|
| Formula |
CH₂N₂ |
| Synonyms |
azimethylene; azomethylene; diazirine |
| Physical description | Yellow gas with a musty odor. | ||
|---|---|---|---|
| Boiling point | -9°F | Molecular weight | 42.1 |
| Freezing point/melting point | -229°F | Vapor pressure | >1 atm |
| Flash point | Vapor density | 1.45 | |
| Specific gravity | Ionization potential | 9.00 eV | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 0861 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | XAD-2 tube (100/50 mg) coated with octanoic acid [SKC 226-23] | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 6-30 L |
||
| Sampling flow rate (TWA)* | 0.2 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | GC-FID | ||
| Method reference | NIOSH 2515 (partially validated) | ||
| Notes | |||
| Special requirements |
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Sampler/Sampling media | |
|---|---|
| Bulk Method |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA |
0.2 ppm (0.4 mg/m³) |
REL-TWA |
0.2 ppm (0.4 mg/m³) |
TLV-TWA |
0.2 ppm [1970] |
PEL-TWA |
0.2 ppm (0.4 mg/m³) |
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
| Notes: | Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
2 ppm |
|||||
| Carcinogenic classifications: IARC-3, TLV-A2 | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Diazomethane NIOSH: Pocket Guide to Chemical Hazards - Diazomethane Literature References
|
Last Updated Date : 12/22/2020