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Acide dithioneux

Acide dithioneux
Image illustrative de l’article Acide dithioneux
Structure de l'acide dithioneux.
Identification
Synonymes

acide hydrosulfureux
acide hypodisulfureux

No CAS
PubChem 24490
ChEBI 29253
SMILES
InChI
Propriétés chimiques
Formule H2O4S2
Masse molaire[1] 130,143 ± 0,011 g/mol
H 1,55 %, O 49,17 %, S 49,28 %,

Unités du SI et CNTP, sauf indication contraire.

L'acide dithioneux est un oxoacide de soufre de formule chimique H2S2O4. Il est très instable sous sa forme pure[2] mais ses sels, appelés dithionites, sont stables.

Références

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  1. Masse molaire calculée d’après « Atomic weights of the elements 2007 », sur www.chem.qmul.ac.uk.
  2. Drozdova, Steudel, Hertwig et Koch, « Structures and Energies of Various Isomers of Dithionous Acid, H2S2O4, and of Its Anion HS2O4- 1 », The Journal of Physical Chemistry A, vol. 102, no 6,‎ , p. 990–996 (DOI 10.1021/jp972658d, Bibcode 1998JPCA..102..990D)

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Acide dithioneux
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