THIONYL CHLORIDE
| CAS # | 7719-09-7 |
|---|---|
| Formula |
Cl₂OS |
| Synonyms |
sulfinyl chloride; sulfur chloride oxide; sulfurous dichloride; sulfurous oxychloride; thionyl dichloride |
| Physical description | Colorless to yellow to reddish liquid with a pungent odor like sulfur dioxide. | ||
|---|---|---|---|
| Boiling point | 169°F | Molecular weight | 119.0 |
| Freezing point/melting point | -156°F | Vapor pressure | 100 mmHg at 70°F |
| Flash point | Vapor density | ||
| Specific gravity | 1.64 | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | 4 | NFPA fire rating | 0 |
| NFPA reactivity rating | 2 | NFPA special instruction | W: Reacts violently or explosively with water. |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | |||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | |||
| Sampling time* | |||
| Sampling volume (TWA)* | |||
| Sampling flow rate (TWA)* | |||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | |||
| Method reference | |||
| 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 | REL-TWA | TLV-TWA | PEL-TWA | ||||
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C |
1 ppm (5 mg/m³) |
TLV-C |
0.2 ppm [2009] |
PEL-C |
1 ppm (5 mg/m³) |
|
| Skin notation |
NA |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
|
Notes:
Not established |
Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
0.2 ppm/2 ppm/10 ppm |
|||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Thionyl chloride NIOSH: Pocket Guide to Chemical Hazards - Thionyl chloride Literature References
|
Last Updated Date : 01/13/2021