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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

Currently viewing:
IUPAC name:
sodium hydrogensulfite

Inventory

EC number:
231-548-0
EC name:
Sodium hydrogensulfite
CAS number:
7631-90-5
CAS number:
7631-90-5
Synonyms
Names:
E 222 FR-62 hidrogenosulfito de sodio (solucion acuosa) Hydrogen sodium sulfite Hydrogen sulfite sodium Hydrogenosulfite de sodium Monosodium sulfite Natriumhydrogensulfit Sodium acid sulfite SODIUM BISULFITE Sodium bisulfite (NaHSO3) Sodium bisulphite Sodium bisulphite (1:1) Sodium hydrogen sulfite Sodium Hydrogen Sulphite (1LB/BT) A.R. Sodium hydrogensulfate SODIUM HYDROGENSULFITE Sodium hydrogensulfite (aqueous solution) sodium hydrogensulphite Sodium sulfite (NaHSO3) Sulfurous acid monosodium salt Sulfurous acid, monosidum salt Sulfurous acid, monosodium salt Sulfurous acid, sodium salt (1:1)
E-222
Sodium bisulfite Monosodium sulfite
Sulfurous acid, monosodium salt
sodium bisulfite
sodium bisulphite
sodium hydrogensulfite sodium bisulfite sodium acid sulfite sulfurous acid, sodium salt
sulfurous acid, monosodium salt
Identifier:
IUPAC name
Sodium hydrogen sulfite
Identifier:
IUPAC name
sodium bisulfite
Identifier:
IUPAC name
sodium hydrogen sulfite
Identifier:
IUPAC name
sodium hydrogen sulfite (aqueous solution)
Identifier:
IUPAC name
sulfurous acid, monosodium salt
Identifier:
PubChem
Sodium Bisulfite
Identifier:
other: InChl
1S/Na.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+1;/p-1
Identifier:
other: Molecular formula
H2O3S.Na
Identifier:
other: Molecular formula
HNaO3S
Identifier:
other: Molecular formula
HO3S.Na
Identifier:
other: InChl
InChI = 1S/Na.H2O3S/c;1-4(2)3/h;4H,(H1,2,3)/q+1;/p-1
Identifier:
other: InChl
InChI=1S/Na.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+1;/p-1
Identifier:
other: Molecular formula
NaHSO3 H[Na+]O2[O-]S
Identifier:
other: Molecular formula
NaSO2OH
Identifier:
other: SMILES notation
OS(=O)[O-].[Na+]
Identifier:
other: SMILES notation
[Na+].OS([O-])=O
Identifier:
other: SMILES notation
[Na+].[O-]S(=O)O
Identifier:
other: SMILES notation
not applicable

Molecular and structural information

Molecular formula:
NaHSO3
Molecular weight:
104.061
SMILES notation:
[Na+].OS(=O)[O-]
InChl:
InChI=1/Na.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+1;/p-1
Structural formula:
Chemical structure

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