Boron sulfide

Boron sulfide
Names
IUPAC name
Boron sulfide
Other names
Boron sesquisulfide, Diboron trisulfide
Identifiers
3D model (JSmol)
ECHA InfoCard 100.031.355 Edit this at Wikidata
EC Number
  • 234-504-9
  • InChI=1S/B2S3/c3-1-5-2-4
    Key: ZVTQDOIPKNCMAR-UHFFFAOYSA-N
  • S=BSB=S
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
111.7 J/mol K
327 J/mol K
-240.6 kJ/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 source of H2S
GHS labelling:
GHS02: FlammableGHS06: ToxicGHS07: Exclamation mark
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)
[1]
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxideSpecial hazards (white): no code
2
3
3
Flash point 18°C (64.4°F)
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).
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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.

  1. ^ Material Safety Data Sheet, VWR, 2010, retrieved November 11, 2023