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Sodium chlorate

Sodium chlorate is an inorganic compound with the chemical formula NaClO3. It is a white crystalline powder that is readily soluble in water. It is hygroscopic. It decomposes above 300 °C to release oxygen and leave sodium chloride. Several hundred million tons are produced annually, mainly for applications in bleaching paper.

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Further Information

Names

IUPAC nameSodium chlorate

Other names

Sodium chlorate(V)

Identifiers

CAS Number: 7775-09-9

JSmol: Interactive image

ChEBI: CHEBI:65242

ChemSpider: 22895

ECHA InfoCard: 100.028.989

EC Number: 231-887-4

KEGG: C18765

MeSH: Sodium+chlorate

PubChem: 516902

RTECS number: FO0525000

UNII: T95DR77GMR

UN number: 1495, 2428

Properties

Chemical formula: NaClO

Molar mass: 106.44 g mol

Appearance: hygroscopic

Odor: Odorless

Density: 2.49 g/cm (15 °C)
2.54 g/cm (20.2 °C)33

Melting point: 248–261 °C (478–502 °F; 521–534 K)

Boiling point: 300–400 °C (572–752 °F; 573–673 K)
decomposes

Solubility in water: 79 g/100 mL (0 °C)
89 g/100 mL (10 °C)
105.7 g/100 mL (25 °C)
125 g/100 mL (40 °C)
220.4 g/100 mL (100 °C)

Solubility: glycerol

Solubility: Sparingly soluble

Solubility: 20 g/100 g (15.5 °C)

Solubility: 14.7 g/100 g

Vapor pressure: <0.35 mPa

Magnetic susceptibility: −34.7·10 cm/mol−63

Refractive index: 1.515 (20 °C)

Structure

Crystal structure: Cubic

Thermochemistry

Specific
heat capacity: 104.6 J/mol·K

Std molar
entropy: 129.7 J/mol·K

Std enthalpy of
formation: -365.4 kJ/mol

Gibbs free energy: -275 kJ/mol

Hazards

Safety data sheet: ICSC 1117

GHS pictograms:

GHS signal word: Danger

GHS hazard statements: H271 H302 H411

GHS precautionary statements: P220 P273

NFPA 704:

Flash point: Non-flammable

median dose: 6500 mg/kg (rats, oral)
700 mg/kg (dogs, oral)

Related compounds

anions: Sodium chloride

cations: Ammonium chlorate

Related compounds: Chloric acid

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