HEXACHLOROBENZENE
Chemical Identification | |
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CAS # | 118-74-1 |
Formula |
C₆Cl₆ |
Synonyms |
HCB; perchlorobenzene; pentachlorophenylchloride; phenyl perchloryl |
Physical Properties | |||
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Physical description | A white crystalline substance. | ||
Boiling point | 612°F | Molecular weight | 284.78 |
Freezing point/melting point | 441-444°F | Vapor pressure | 1 mmHg at 237.9°F |
Flash point | 468°F | Vapor density | 9.8 |
Specific gravity | 2.044 at 75.2°F | Ionization potential | |
Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
NFPA health rating | 1 | NFPA fire rating | 1 |
NFPA reactivity rating | 0 | NFPA special instruction | |
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Monitoring Methods Used by OSHA | ||||||
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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 Method | |
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Sampler/Sampling media |
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Bulk Method |
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On-Site Screening Techniques | ||||||
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Device | ||||||
Model/Type | ||||||
Sampling information (see manufacturer instructions) |
Exposure Limits | |||||||
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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 |
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REL-TWA |
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TLV-TWA |
0.002 mg/m³ [1994] |
PEL-TWA |
0.002 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 |
NA |
Skin notation |
NA |
Skin notation |
Y |
Skin notation |
Y |
Notes:
Not established |
Notes:
Not established |
Notes:
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Notes:
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Health factors: See NIH-NLM PubChem. | IDLH | ||||||
Carcinogenic classifications: IARC-2B, NTP-R, TLV-A3, EPA-B2 |
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 - Hexachlorobenzene NIOSH: Pocket Guide to Chemical Hazards - Hexachlorobenzene Literature References
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Last Updated Date : 12/31/2020