ACETYLENE TETRABROMIDE (1,1,2,2-TETRABROMOETHANE)
Chemical Identification | |
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CAS # | 79-27-6 |
Formula |
C₂H₂Br₄ |
Synonyms |
symmetrical tetrabromoethane; TBE; tetrabromoacetylene; tetrabromoethane; 1,1,2,2-tetrabromoethane |
Physical Properties | |||
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Physical description | Pale-yellow liquid with a pungent odor similar to camphor or iodoform. | ||
Boiling point | 474°F (decomposes) | Molecular weight | 345.7 |
Freezing point/melting point | 32°F | Vapor pressure | 0.02 mmHg |
Flash point | Vapor density | ||
Specific gravity | 2.97 | Ionization potential | |
Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
NFPA health rating | 3 | NFPA fire rating | 0 |
NFPA reactivity rating | 1 | 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.) | 0080 | |||||
Sampling group | ||||||
Sampler/Sampling media | Silica gel tube (150/75 mg) [SKC 226-10] | |||||
Sampling time* | ||||||
Sampling volume (TWA)* | 50-100 L |
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Sampling flow rate (TWA)* | 0.2-1 L/min |
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Sampling volume (STEL/Peak/C)* | ||||||
Sampling flow rate (STEL/Peak/C)* | ||||||
Analytical method instruments | GC-FID | |||||
Method reference | NIOSH 2003 (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 Method | |
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Sampler/Sampling media |
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 |
1 ppm (14 mg/m³) |
REL-TWA | TLV-TWA |
0.1 ppm (inhalable fraction and vapor) [2005] |
PEL-TWA |
1 ppm (14 mg/m³) |
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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:
See Appendix D - Substances With No Established RELs. |
Notes: | Notes: | ||||
Health factors: See NIH-NLM PubChem. | IDLH |
8 ppm |
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Carcinogenic classifications: Not listed | Notes: | ||||||
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: |
Additional Resources and Literature References |
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NOAA: CAMEO Chemicals - Acetylene tetrabromide NIOSH: Pocket Guide to Chemical Hazards - Acetylene tetrabromide Literature References
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Last Updated Date : 12/15/2020