Sodium sulfite heptahydrate

HCID 160916

Notes Reactions

Substructure search Find similar structures

Basic information

CAS: 10102-15-5
Standard SMILES: O.O.O.O.O.O.O.O=S([O-])[O-].[Na+].[Na+]
InChIKey: WMJRPJZQQSSDBU-UHFFFAOYSA-L
Molecular formula: H14Na2O10S
Average molar mass: 252.15 g/mol
Monoisotopic mass: 252.01030621

Names & identifiers

Preferred name: Sodium sulfite heptahydrate
IUPAC: disodium;sulfite;heptahydrate
English name: SODIUM SULFITE HEPTAHYDRATE
Molecular formula: H5NaO4S
Molecular weight: 124.09

Names & synonyms

Sodium sulfite heptahydrateSodium sulfite heptahydrate (2:1:7)Dinatrium-sulfit-7-wasserSulfurous acid, disodium salt, heptahydratesodium sulphite heptahydrate4YS288TJUISulfurous acid, sodium salt, heptahydrateDinatrium-sulfit-7-wasser [IUPAC]DISODIUM SULFITE, HEPTAHYDRATESODIUM SULFITE HEPTAHYDRATE [EP IMPURITY]SODIUM SULFITE HEPTAHYDRATE [EP MONOGRAPH]Dinatrium-sulfit-7-wasser (IUPAC)

Show more names

SODIUM SULFITE HEPTASODIUM SULPHITE 7H2OSODIUM SULFITE 7 H2OSodiumsulfite7-hydrateSODIUMSULPHITEHEPTAHYDRATESulfurous acid disodium·7hydratesodiumsulfiteheptahydrate(2:1:7)Sodium Sulfite Heptahydrate,>98%sulfurous acid, sodium salt hydrate

SODIUM SULFITE HEPTAHYDRATE (EP IMPURITY)SODIUM SULFITE HEPTAHYDRATE (EP MONOGRAPH)RefChem:887904806-204-310102-15-5disodium;sulfite;heptahydrateSulfurous acid, disodium salt, heptahydrate (9CI)Sulfurous Acid Sodium Salt Heptahydrate

Database identifiers

CAS: 10102-15-5
PubChem CID: 160916
DTXSID: DTXSID8043949
UNII: 4YS288TJUI
EC Number: 806-204-3

Properties

Computed structural properties

Topological polar surface area: 89.4 Å²
Hydrogen bond donors: 7
Hydrogen bond acceptors: 11
Rotatable bonds: 0
Heavy atoms: 13
Formal charge: 0
Complexity: 18.8

Physicochemical properties

Density: 1.56 · 1.560
storage temp.: 0 · 0-6°C
solubility: Freely soluble in water, very slightly soluble in ethanol (96 per cent).
form: white monoclinic crystals
color: white monoclinic crystals, crystalline; unstable
Water Solubility: 1.6 parts · soluble 1.6 parts H2O, ~30 parts glycerol; slightly soluble alcohol [MER06]
InChI: InChI=1S/Na.H2O3S.H2O.H/c;1-4(2)3;;/h;(H2,1,2,3);1H2;
InChIKey: UYXGJBBRCQYJLX-UHFFFAOYSA-N
SMILES: S(O)(O)=O.[NaH].O
CAS DataBase Reference: 10102 · 10102-15-5(CAS DataBase Reference)
FDA UNII: 4 YS288TJUI · 4YS288TJUI
Symbol(GHS): 7 · GHS07
Signal word: Warning
Hazard statements: 302 · H302
Precautionary statements: 264 · P264-P270-P301+P312-P330-P501

Safety & regulation

GHS classification

GHS Classification · 4 items

Warning

H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]

P264, P270, P301+P317, P330, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 38 reports by companies from 1 notifications to the ECHA C&L Inventory.

Hazard information

Regulatory Information · 2 items

Chemical: Sulfurous acid, disodium salt, heptahydrate

Sulfurous acid, disodium salt, heptahydrate: Does not have an individual approval but may be used under an appropriate group standard

Hazard Classes and CategoriesAcute Tox. 4 (100%)

Safety data

Signal word: Warning
Symbol(GHS): GHS07
Hazard statements: H302
Precautionary statements: P264-P270-P301+P312-P330-P501

Chemistry & industry

Applications

UsesSodium sulfite is mainly used for the manufacture of detergents and in the Kraft process of paper pulping. Sodium sulfite is also used as a fining agent, to help remove small air bubbles from molten glass, in the glass industry.

UsesAntioxidant.