Boron sulfide
| Names | |
|---|---|
| IUPAC name
Boron sulfide | |
| Other names
Boron sesquisulfide, Diboron trisulfide | |
| Identifiers | |
3D model (JSmol) |
|
| ChemSpider | |
| ECHA InfoCard | 100.031.355 |
| EC Number |
|
PubChem CID |
|
CompTox Dashboard (EPA) |
|
| |
| |
| Properties | |
| B2S3 | |
| Molar mass | 117.80 g/mol |
| Appearance | colorless crystals |
| Density | 1.55 g/cm3, solid |
| Melting point | 563 °C (1,045 °F; 836 K) |
| Boiling point | decomposes at high T |
| decomposes | |
| Solubility | soluble in ammonia |
| Structure | |
| monoclinic, mP40, SpaceGroup = P21/c, No. 14 | |
| B: planar, sp2 | |
| Thermochemistry | |
Heat capacity (C) |
111.7 J/mol K |
Std molar entropy (S⦵298) |
327 J/mol K |
Std enthalpy of formation (ΔfH⦵298) |
−240.6 kJ/mol |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
source of H2S |
| GHS labelling: | |
| Danger | |
| H225, H260, H301, H311, H315, H318, H335 | |
| P210, P223, P231+P232, P280, P302+P352, P303+P361+P353, P305+P351+P338, P312, P402+P404, P405 | |
| NFPA 704 (fire diamond) | |
| Flash point | 18 °C (64 °F; 291 K) |
| Safety data sheet (SDS) | trc-canada.com |
| Related compounds | |
Related compounds |
BCl3 Lawesson's reagent |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Boron sulfide is the chemical compound with the formula B2S3. It is a white, moisture-sensitive solid. It has a polymeric structure. The material has been of interest as a component of "high-tech" glasses and as a reagent for preparing organosulfur compounds. It is the parent member of the thioborates.