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dithionous acid

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Origin: China

Cas No: 15959-26-9

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

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CAS No.: 15959-26-9 Formula: H2O4S2 Molecular Weight: 130.14300

Description

Dithionous acid is a sulfur oxoacid with the chemical formula H2S2O4. It is unstable in pure form, but its salts, known as dithionites, are stable.
It was initially assumed that the C2 symmetric structure HOS(=O)-S(=O)OH is the most stable among molecules with the formula H 2S 2O 4 using ab initio calculations. The reason for this is the existence of intermolecular hydrogen bonds. It is now known that dithionous acid spontaneously decomposes to SO2 and S(OH)2.
Sodium dithionite is a white powder used as a reductant and a bleaching agent. It is also used to reduce the nitro group to an amino group in organic reactions.

Basic Info

Chemical Name	dithionous acid
Synonyms	Hydrosulfurous acid; Hyposulfurous acid; dithionige Saeure; H2S2O4; bis(hydroxidooxidosulfur)(S--S); hypodisulfurous acid;
CAS No.	15959-26-9
Molecular Formula	H2O4S2
Molecular Weight	130.14300
PSA	113.02000
LogP	1.07620