1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE†
| CAS # | 76-12-0 |
|---|---|
| Formula |
CCl₂FCCl₂F |
| Synonyms |
Refrigerant 112; Halocarbon 112; 1,2-difluoro-1,1,2,2-tetrachloroethane; Freon112 |
| Physical description | Colorless solid or liquid (above 77°F) with a slight, ether-like odor. | ||
|---|---|---|---|
| Boiling point | 199°F | Molecular weight | 203.8 |
| Freezing point/melting point | 77°F | Vapor pressure | 40 mmHg |
| Flash point | Vapor density | ||
| Specific gravity | 1.65 | Ionization potential | 11.30 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.) | 2339 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | CSC tube (100/50 mg) [SKC 226-01] | ||
| Sampling time* |
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| Sampling volume (TWA)* |
0.5-2 L |
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| Sampling flow rate (TWA)* |
0.01-0.035 L/min |
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| Sampling volume (STEL/Peak/C)* |
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| Sampling flow rate (STEL/Peak/C)* |
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| Analytical method instruments | GC-FID | ||
| Method reference | NIOSH 1016 (partially validated) | ||
| Notes |
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| Special requirements |
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* 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 |
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|---|---|
| Bulk Method |
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| Device | Infrared spectrophotometer | ||||
|---|---|---|---|---|---|
| Model/Type | Miran 1A & 1B | ||||
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Sampling information (see manufacturer instructions) |
0.5 ppm @ 9.8 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 |
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|---|---|---|---|---|---|---|---|
| PEL-TWA |
500 ppm (4170 mg/m³) |
REL-TWA |
500 ppm (4170 mg/m³) |
TLV-TWA |
50 ppm [2007] |
PEL-TWA |
500 ppm (4170 mg/m³) |
| PEL-STEL |
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REL-STEL |
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TLV-STEL |
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PEL-STEL |
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| PEL-C |
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REL-C |
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TLV-C |
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PEL-C |
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| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
| Notes: |
Notes:
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Notes:
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Notes:
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| Health factors: See NIH-NLM PubChem. | IDLH |
200 ppm |
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| Carcinogenic classifications: Not listed |
Notes:
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
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Additional Resources and Literature References
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NOAA: CAMEO Chemicals - 1,1,2,2,-Tetrachloro-1,2-difluoroethane NIOSH: Pocket Guide to Chemical Hazards - 1,1,2,2,-Tetrachloro-1,2-difluoroethane Literature References
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Last Updated Date : 12/19/2018