Carbon tetrabromide
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"CBr4" redirects here. For the Transport Canada location, see Clinton/Bleibler Ranch Aerodrome.
Carbon tetrabromide, CBr4, also known as tetrabromomethane, is a bromide of carbon. Both names are acceptable under IUPAC nomenclature.
Quick Facts Names, Identifiers ...
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Names | |||
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Preferred IUPAC name
Tetrabromomethane[1] | |||
Other names
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Identifiers | |||
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3D model (JSmol) |
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Abbreviations | R-10B4[citation needed] | ||
1732799 | |||
ChEBI | |||
ChemSpider |
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ECHA InfoCard | 100.008.355 | ||
EC Number |
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26450 | |||
MeSH | carbon+tetrabromide | ||
PubChem CID |
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RTECS number |
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UNII | |||
UN number | 2516 | ||
CompTox Dashboard (EPA) |
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Properties | |||
CBr4 | |||
Molar mass | 331.627 g·mol−1 | ||
Appearance | Colorless to yellow-brown crystals | ||
Odor | sweet odor | ||
Density | 3.42 g mL−1 | ||
Melting point | 94.5 °C; 202.0 °F; 367.6 K | ||
Boiling point | 189.7 °C; 373.4 °F; 462.8 K decomposes | ||
0.024 g/100 mL (30 °C) | |||
Solubility | soluble in ether, chloroform, ethanol | ||
Vapor pressure | 5.33 kPa (at 96.3 °C) | ||
−93.73·10−6 cm3/mol | |||
Refractive index (nD) |
1.5942 (100 °C) | ||
Structure | |||
Monoclinic | |||
Tetragonal | |||
Tetrahedron | |||
0 D | |||
Thermochemistry | |||
Heat capacity (C) |
0.4399 J K−1 g−1 | ||
Std molar entropy (S⦵298) |
212.5 J/mol K | ||
Std enthalpy of formation (ΔfH⦵298) |
26.0–32.8 kJ mol−1 | ||
Gibbs free energy (ΔfG⦵) |
47.7 kJ/mol | ||
Std enthalpy of combustion (ΔcH⦵298) |
−426.2–−419.6 kJ mol−1 | ||
Hazards | |||
GHS labelling: | |||
Danger | |||
H302, H315, H318, H335 | |||
P261, P280, P305+P351+P338 | |||
NFPA 704 (fire diamond) | |||
Flash point | noncombustible[3] | ||
Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
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NIOSH (US health exposure limits): | |||
PEL (Permissible) |
none[3] | ||
REL (Recommended) |
TWA 0.1 ppm (1.4 mg/m3) ST 0.3 ppm (4 mg/m3)[3] | ||
IDLH (Immediate danger) |
N.D.[3] | ||
Safety data sheet (SDS) | inchem.org | ||
Related compounds | |||
Other anions |
Carbon tetrafluoride Carbon tetrachloride Carbon tetraiodide | ||
Other cations |
Silicon tetrabromide Germanium tetrabromide Tin(IV) bromide | ||
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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