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Names | |
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IUPAC name
Carbon disulfide
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Systematic IUPAC name
Methanedithione | |
Other names
Carbon bisulfide
Dithiocarbonic anhydride[1] | |
Identifiers | |
3D model (JSmol)
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1098293 | |
ChEBI | |
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.000.767 |
EC Number |
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KEGG | |
PubChem CID
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RTECS number |
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UNII | |
UN number | 1131 |
CompTox Dashboard (EPA)
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Properties | |
CS2 | |
Molar mass | 76.13 g·mol−1 |
Appearance | Colorless liquid Impure: light-yellow |
Odor | Pleasant, ether- or chloroform-like Commercial: Foul, like rotten radish |
Density | 1.539 g/cm3 (−186°C) 1.2927 g/cm3 (0 °C) 1.266 g/cm3 (25 °C)[2] |
Melting point | −111.61 °C (−168.90 °F; 161.54 K) |
Boiling point | 46.24 °C (115.23 °F; 319.39 K) |
2.58 g/L (0 °C) 2.39 g/L (10 °C) 2.17 g/L (20 °C)[3] 0.14 g/L (50 °C)[2] | |
Solubility | Soluble in alcohol, ether, benzene, oil, CHCl3, CCl4 |
Solubility in formic acid | 4.66 g/100 g[2] |
Solubility in dimethyl sulfoxide | 45 g/100 g (20.3 °C)[2] |
Vapor pressure | 48.1 kPa (25 °C) 82.4 kPa (40 °C)[4] |
−42.2·10−6 cm3/mol | |
Refractive index (nD)
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1.627[5] |
Viscosity | 0.436 cP (0 °C) 0.363 cP (20 °C) |
Structure | |
Linear | |
0 D (20 °C)[2] | |
Thermochemistry | |
Heat capacity (C)
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75.73 J/(mol·K)[2] |
Std molar
entropy (S⦵298) |
151 J/(mol·K)[2] |
Std enthalpy of
formation (ΔfH⦵298) |
88.7 kJ/mol[2] |
Gibbs free energy (ΔfG⦵)
|
64.4 kJ/mol[2] |
Std enthalpy of
combustion (ΔcH⦵298) |
1687.2 kJ/mol[4] |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Inhalation hazards
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Irritant; neurotoxic |
Eye hazards
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Irritant |
Skin hazards
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Irritant |
GHS labelling:[5] | |
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Danger | |
H225, H315, H319, H361, H372 | |
P210, P281, P305+P351+P338, P314 ICSC 0022 | |
NFPA 704 (fire diamond) | |
Flash point | −43 °C (−45 °F; 230 K)[2] |
102 °C (216 °F; 375 K)[2] | |
Explosive limits | 1.3–50%[6] |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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3188 mg/kg (rat, oral) |
LC50 (median concentration)
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>1670 ppm (rat, 1 h) 15500 ppm (rat, 1 h) 3000 ppm (rat, 4 h) 3500 ppm (rat, 4 h) 7911 ppm (rat, 2 h) 3165 ppm (mouse, 2 h)[7] |
LCLo (lowest published)
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4000 ppm (human, 30 min)[7] |
NIOSH (US health exposure limits): | |
PEL (Permissible)
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TWA 20 ppm C 30 ppm 100 ppm (30-minute maximum peak)[6] |
REL (Recommended)
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TWA 1 ppm (3 mg/m3) ST 10 ppm (30 mg/m3) [skin][6] |
IDLH (Immediate danger)
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500 ppm[6] |
Related compounds | |
Related compounds
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Carbon dioxide Carbonyl sulfide Carbon diselenide |
Supplementary data page | |
Carbon disulfide (data page) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Carbon disulfide (also spelled as carbon disulphide) is an inorganic compound with the chemical formula CS2 and structure S=C=S. It is also considered as the anhydride of thiocarbonic acid.[8] It is a colorless, flammable, neurotoxic liquid that is used as a building block in organic synthesis. Pure carbon disulfide has a pleasant, ether- or chloroform-like odor, but commercial samples are usually yellowish and are typically contaminated with foul-smelling impurities.[9]
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