Stibine
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). This gas has an offensive smell like hydrogen sulfide (rotten eggs).
Antimony, Sb Hydrogen, H | |
| Names | |
|---|---|
| IUPAC name
Stibane | |
| 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 |
| Vapor pressure | >1 atm (20°C) |
| Conjugate acid | Stibonium |
| Structure | |
| Trigonal pyramidal | |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
Extremely toxic, flammable |
| GHS labelling: | |
| 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) |
100 ppm (mouse, 1 hr) 92 ppm (guinea pig, 1 hr) 40 ppm (dog, 1 hr) |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 0.1 ppm (0.5 mg/m3) |
REL (Recommended) |
TWA 0.1 ppm (0.5 mg/m3) |
IDLH (Immediate danger) |
5 ppm |
| Related compounds | |
Related compounds |
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).
Infobox references | |
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