DIFLUORODIBROMOMETHANE†
| CAS # | 75-61-6 |
|---|---|
| Formula |
CBr₂F₂ |
| Synonyms |
dibromodifluoromethane; Freon12B2; Halon1202 |
| Physical description | Colorless, heavy liquid or gas (above 76°F) with a characteristic odor. | ||
|---|---|---|---|
| Boiling point | 76°F | Molecular weight | 209.8 |
| Freezing point/melting point | -231°F | Vapor pressure | 620 mmHg |
| Flash point | Vapor density | ||
| Specific gravity | 2.29 at 59° | Ionization potential | 11.07 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.) | 0922 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | 2 CSC tubes (100/50 mg sections, 20/40 mesh) in series [SKC 226-01] | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 2.5-10 L |
||
| Sampling flow rate (TWA)* | 0.01-0.2 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | GC-FID | ||
| Method reference | NIOSH 1012 (fully 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 | Infrared spectrophotometer | ||||
|---|---|---|---|---|---|
| Model/Type | Miran 1A & 1B | ||||
|
Sampling information (see manufacturer instructions) |
0.04 ppm@9.2 µm |
|
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 |
100 ppm (860 mg/m³) |
REL-TWA |
100 ppm (860 mg/m³) |
TLV-TWA |
100 ppm [1962] |
PEL-TWA |
100 ppm (860 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 |
2000 ppm |
|||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Dibromodifluoromethane NIOSH: Pocket Guide to Chemical Hazards - Difluorodibromomethane Literature References
|
Last Updated Date : 12/28/2020