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![]() Antimony, Sb Hydrogen, H | |
Names | |
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IUPAC name
Stibane
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Other names
Antimony trihydride
Hydrogen antimonide | |
Identifiers | |
3D model (JSmol)
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ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.149.507 |
EC Number |
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795 | |
PubChem CID
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RTECS number |
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UNII | |
UN number | 2676 |
CompTox Dashboard (EPA)
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Properties | |
SbH3 | |
Molar mass | 124.784 g/mol |
Appearance | Colourless gas |
Odor | unpleasant, like hydrogen sulfide |
Density | 5.48 g/L, gas |
Melting point | −88 °C (−126 °F; 185 K) |
Boiling point | −17 °C (1 °F; 256 K) |
slightly soluble | |
Solubility in ethanol | soluble[1] |
Vapor pressure | >1 atm (20°C)[2] |
Conjugate acid | Stibonium |
Structure | |
Trigonal pyramidal | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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Extremely toxic, flammable |
GHS labelling: | |
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Danger | |
H220, H370 | |
P210, P260, P264, P270, P307+P311, P321, P377, P381, P403, P405, P501 | |
NFPA 704 (fire diamond) | |
Flash point | Flammable gas |
Lethal dose or concentration (LD, LC): | |
LCLo (lowest published)
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100 ppm (mouse, 1 hr) 92 ppm (guinea pig, 1 hr) 40 ppm (dog, 1 hr)[3] |
NIOSH (US health exposure limits): | |
PEL (Permissible)
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TWA 0.1 ppm (0.5 mg/m3)[2] |
REL (Recommended)
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TWA 0.1 ppm (0.5 mg/m3)[2] |
IDLH (Immediate danger)
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5 ppm[2] |
Related compounds | |
Related compounds
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Ammonia Phosphine Arsine Bismuthine Triphenylstibine |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Stibine (IUPAC name: stibane) is a chemical compound with the formula SbH3. A pnictogen hydride, this colourless, highly toxic gas is the principal covalent hydride of antimony, and a heavy analogue of ammonia. The molecule is pyramidal with H–Sb–H angles of 91.7° and Sb–H distances of 170.7 pm (1.707 Å). The smell of this compound from usual sources (like from reduction of antimony compounds) is reminiscent of arsine, id est garlic-like.
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