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Sodium hydrogen sulfite

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EntityQ407891· pop 33· linked from 217 articles

Sodium hydrogen sulfite

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Also known as monosodium salt of sulfurous acid, sodium acid bisulfite, sodium bisulphite, Bisulfite de sodium, sodium hydrogensulfite, Sodium bisulfite, Natriumbisulfit

chemical compound

Chemical data

Formula
HNaO3S
Molecular weight
104.06 g/mol
IUPAC name
sodium hydrogen sulfite
SMILES
OS(=O)[O-].[Na+]
InChIKey
DWAQJAXMDSEUJJ-UHFFFAOYSA-M
Polar surface area
79.6 Ų
H-bond donors
1
H-bond acceptors
4
Formal charge
0

via PubChem

Wikidata facts

Subclass of
acid salt
Has part
carbon
Mass
103.95440917200001
Show 10 more facts
chemical formula
NaHSO₃
canonical SMILES
[Na+].[O-]S(=O)O
NIOSH Pocket Guide ID
0561
density
1.34
solubility
29
time-weighted average exposure limit
5
melting point
150
NCI Thesaurus ID
C73837
subject has role
antioxidant
Commons category
Sodium hydrogen sulfite
Sources (3)

via Wikidata · CC0

~4 min read

Encyclopedic overview

Sodium bisulfite (or sodium bisulphite, sodium hydrogen sulfite) is a chemical mixture with the approximate chemical formula NaHSO3. Sodium bisulfite is not a real compound, but a mixture of salts that dissolve in water to give solutions composed of sodium and bisulfite ions. It appears in form of white or yellowish-white crystals with an odor of sulfur dioxide. Sodium bisulfite is used in a variety industries such as a food additive with E number E222 in the food industry. It is also used as a reducing agent for applications in the textile and cosmetics industries.

Synthesis

Excerpted from Wikipedia’s “Sodium hydrogen sulfite” article, available under the CC BY-SA 4.0 licence.