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Acetylene tetrabromide

Synonyms & Trade Names
Symmetrical tetrabromoethane; TBE; Tetrabromoacetylene; Tetrabromoethane; 1,1,2,2-Tetrabromoethane
CAS No.
79-27-6
RTECS No.
KI8225000
DOT ID & Guide
2504 159
Formula
CHBr2CHBr2
Conversion
1 ppm = 14.14 mg/m3
IDLH
8 ppm
See: 79276
Exposure Limits
NIOSH REL
: See Appendix D
OSHA PEL
: TWA 1 ppm (14 mg/m3)
Measurement Methods

NIOSH 2003
See: NMAM or OSHA Methods
Physical Description
Pale-yellow liquid with a pungent odor similar to camphor or iodoform. [Note: A solid below 32°F.]
MW:
345.7
BP:
474°F (Decomposes)
FRZ:
32°F
Sol:
0.07%
VP:
0.02 mmHg
IP:
?
Sp.Gr:
2.97
Fl.P:
NA
UEL:
NA
LEL:
NA
Noncombustible Liquid
Incompatibilities & Reactivities
Strong caustics; hot iron; reducing metals such as aluminum, magnesium & zinc
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, nose; anorexia, nausea; headache; abdominal pain; jaundice; leukocytosis (increased blood leukocytes); central nervous system depression
Target Organs
Eyes, respiratory system, liver, central nervous system
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Water flush promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

OSHA

Up to 8 ppm:
(APF = 10) Any supplied-air respirator
(APF = 50) Any self-contained breathing apparatus with a full facepiece

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 1235   See MEDICAL TESTS: 0005
 

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