Thiocarbonic acid

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Thiocarbonic acid
Trithiocarbonic acid.svg
IUPAC name
carbonotrithioic acid
Other names
Trithiocarbonic acid
594-08-1 YesY
Jmol-3D images Image
PubChem 68982
Molar mass 110.22 g/mol
Appearance red, oily liquid
Density 1.483 g/cm3(liquid)
Melting point −26.8 °C; −16.3 °F; 246.3 K
Boiling point 58 °C; 136 °F; 331 K
Related compounds
Related compounds
Carbonic acidThiosulfuric acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Thiocarbonic acid is an inorganic acid which is related to carbonic acid. Its chemical formula is H2CS3.

It can be synthesized through the reaction of hydrosulfide and carbon disulfide:

Physical properties of thiocarbonic acid
CS2 + SH → S2CSH
S2CSH + OH → CS32− + H2O[1]

Thiocarbonic acid decomposes when heated:

H2CS3 → CS2 + H2S (g)


  1. ^ (simplified Chinese)《无机化学丛书》(张青莲 主编).第三卷 碳硅锗分族.4.3.2 二硫化碳及有关化合物.P97