Hydrogen sulfide

H2SCAS 7783-06-434.08 g/mol

H2S

Properties

Molecular formula
H2S
Molar mass
34.08 g/mol
Exact mass
33.9877 Da
Density
0.95 g/mL
Melting point
−85.49 °C
Boiling point
−60.33 °C
Critical temperature
100.4 °C (373.5 K)ChemSep
Critical pressure
89.63 barChemSep
Acentric factor
0.094ChemSep
Enthalpy of formation (gas)
−20.63 kJ/molChemSep
pKa
7.04, 11.96
Flash point
260 °C
Water solubility
3.98 g/L (20 °C)
logP
0.11Crippen estimate
Polar surface area
0.0 Ų
H-bond donors / acceptors
0 / 0
Rotatable bonds
0

Hazards

Danger
Flammable (GHS02)Acute Toxic (GHS06)Environmental Hazard (GHS09)

Harmonised EU classification (CLP Annex VI, index 016-001-00-4), via PubChem.

Precautionary statements

P203, P210, P222, P260, P271, P273, P280, P284, P304+P340, P316, P320, P377, P381, P391, P403, P403+P233, P405, P501

Identifiers

CAS number
7783-06-4
SMILES
S
InChIKey
RWSOTUBLDIXVET-UHFFFAOYSA-N
InChI
InChI=1S/H2S/h1H2
Characterization data

Calculated from the structure, in the form journals print them.

¹H NMR
Predicted ¹H NMR (400 MHz, CDCl₃) δ 1.35 (s, 2H).
¹³C NMR
Predicted ¹³C NMR (101 MHz, CDCl₃) δ .
[M + H]+
[M + H]+ Calcd for H3S 34.9950
[M + Na]+
[M + Na]+ Calcd for H2NaS 56.9769
[M − H]−
[M − H]− Calcd for HS 32.9804

Weigh it out

Type any one amount. The others follow from the molar mass and density.

Names and synonyms

9 names
  • Hydrogen sulfide (H2S)
  • Hydrosulfuric acid
  • Stink damp
  • Sulfureted hydrogen
  • Sulfur hydride
  • Dihydrogen sulfide
  • Dihydrogen monosulfide
  • Sulfur dihydride
  • Sulfur hydride (SH2)

Work with Hydrogen sulfide

Elsewhere