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Names | |||
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Preferred IUPAC name
1,2-Dibromoethane[1] | |||
Other names | |||
Identifiers | |||
3D model (JSmol)
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Abbreviations | EDB[citation needed] | ||
605266 | |||
ChEBI | |||
ChEMBL | |||
ChemSpider | |||
ECHA InfoCard | 100.003.132 | ||
EC Number |
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KEGG | |||
MeSH | Ethylene+Dibromide | ||
PubChem CID
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RTECS number |
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UNII | |||
UN number | 1605 | ||
CompTox Dashboard (EPA)
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Properties | |||
C2H4Br2 | |||
Molar mass | 187.862 g·mol−1 | ||
Appearance | Colorless liquid | ||
Odor | faintly sweet[2] | ||
Density | 2.18 g mL−1 | ||
Melting point | 9.4 to 10.2 °C; 48.8 to 50.3 °F; 282.5 to 283.3 K | ||
Boiling point | 129 to 133 °C; 264 to 271 °F; 402 to 406 K | ||
0.4% (20 °C)[2] | |||
log P | 2.024 | ||
Vapor pressure | 1.56 kPa | ||
Henry's law
constant (kH) |
14 μmol Pa kg−1 | ||
Refractive index (nD)
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1.539 | ||
Thermochemistry | |||
Heat capacity (C)
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134.7 J K−1 mol−1 | ||
Std molar
entropy (S⦵298) |
223.30 J K−1 mol−1 | ||
Std enthalpy of
combustion (ΔcH⦵298) |
−1.2419–−1.2387 MJ mol−1 | ||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards
|
carcinogen[2] | ||
GHS labelling: | |||
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Danger | |||
H301, H311, H315, H319, H331, H335, H350, H411 | |||
P261, P273, P280, P301+P310, P305+P351+P338 | |||
NFPA 704 (fire diamond) | |||
Flash point | 104 °C (219 °F; 377 K) | ||
Lethal dose or concentration (LD, LC): | |||
LD50 (median dose)
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LC50 (median concentration)
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1831 ppm (rat, 30 min) 691 ppm (rat, 1 hr)[3] | ||
LCLo (lowest published)
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200 ppm (rat, 8 hr) 400 ppm (guinea pig, 3 hr)[3] | ||
NIOSH (US health exposure limits): | |||
PEL (Permissible)
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TWA 20 ppm C 30 ppm 50 ppm [5-minute maximum peak][2] | ||
REL (Recommended)
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Ca TWA 0.045 ppm C 0.13 ppm [15-minute][2] | ||
IDLH (Immediate danger)
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Ca [100 ppm][2] | ||
Related compounds | |||
Related alkanes
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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1,2-Dibromoethane, also known as ethylene dibromide (EDB), is an organobromine compound with the chemical formula C
2H
4Br
2. Although trace amounts occur naturally in the ocean, where it is probably formed by algae and kelp, substantial amounts are produced industrially. It is a dense colorless liquid with a faint, sweet odor, detectable at 10 ppm. It is a widely used and sometimes-controversial fumigant.[4] The combustion of 1,2-dibromoethane produces hydrogen bromide gas that is significantly corrosive.[5]
Ullmann
was invoked but never defined (see the help page).