ACETYLENE TETRABROMIDE (1,1,2,2-TETRABROMOETHANE)

Chemical Identification
Chemical Identification
CAS # 79-27-6
Formula

C₂H₂Br₄

Synonyms

symmetrical tetrabromoethane; TBE; tetrabromoacetylene; tetrabromoethane; 1,1,2,2-tetrabromoethane

Physical Properties
Physical Properties
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
Monitoring Methods Used by OSHA
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

Sampling flow rate (TWA)*

0.2-1 L/min

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
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
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
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
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)

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:

See 29 CFR 1910.1000 Table Z-1.

Notes:

See Appendix D - Substances With No Established RELs.

Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

8 ppm

Carcinogenic classifications: Not listed Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Acetylene tetrabromide

NIOSH: Pocket Guide to Chemical Hazards - Acetylene tetrabromide

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 1,1,2,2-Tetrabromoethane. See annual publication for most recent information.
  • Reid, J.B.: Saturated methyl halogenated aliphatic hydrocarbons (Chapter 62). In: Patty's Toxicology, 5th Ed., Vol. 5, Bingham, E., Cohrssen, B., Powell, C.H. eds. New York: John Wiley & Sons, Inc., pp. 185-189, 2001.
  • Morrow, L.A., Callender, T., Lottenberg, S., Buchsbaum, M.S., Hodgson, M.J., and Robin, N.: PET and neurobehavioral evidence of tetrabromoethane encephalopathy. J. Neuropsychiatry Clin. Neurosci. 2(4) : 431-435, 1990.
  • Van Duuren, B.L., Goldschmidt, B.M., Loewengart, G., Smith, A.C., Melchionne, S., Seldman, I. and Roth, D.: Carcinogenicity of halogenated olefinic and aliphatic hydrocarbons in mice. J. Natl. Cancer Inst. 63(6): 1433-1439, 1979.

Last Updated Date : 12/15/2020