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Sodium selenite

Sodium selenite is the inorganic compound with the formula Na2SeO3. This salt is a colourless solid. The pentahydrate Na2SeO3(H2O)5 is the most common water-soluble selenium compound.

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Further Information

Identifiers

CAS Number: (hydrate: 26970-82-1) 10102-18-8 (hydrate: 26970-82-1)

JSmol: Interactive image

ChEBI: CHEBI:48843

ChEMBL: ChEMBL112302

ChemSpider: 23308

ECHA InfoCard: 100.030.230

EC Number: 233-267-9

KEGG: D10530

PubChem: 24934

RTECS number: VS7350000

UNII: HIW548RQ3W

UN number: 2630

Properties

Chemical formula: Na2O3Se

Molar mass: 172.95 g·mol

Appearance: colourless solid

Density: 3.1 g/cm

Melting point: decomposes at 710 °C

Solubility in water: 85 g/100 mL (20 °C)

Solubility: alcohol

Structure

Crystal structure: tetragonal

Pharmacology

ATC code: WHOA12CE02

Hazards

Safety data sheet: ICSC 0698

EU classification: T+

R-phrases: R23 R28 R31 R43 R51/53

S-phrases: (S1/2) S28 S36/37 S45 S61

NFPA 704:

Related compounds

Related compounds: Sodium sulfite

Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).

Infobox references