Sodium bromate

Sodium bromate
Names
	IUPAC name Sodium bromate
	Other names Sodium bromate(V); Bromic acid, sodium salt
Identifiers
CAS Number	7789-38-0 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:75229 ;
ChemSpider	23009 ;
ECHA InfoCard	100.029.237
EC Number	232-160-4
PubChem CID	23668195;
RTECS number	EF8750000
UN number	1494
	InChI InChI=1S/BrHO3.Na/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1 Key: XUXNAKZDHHEHPC-UHFFFAOYSA-M ; InChI=1/BrHO3.Na/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1 Key: XUXNAKZDHHEHPC-REWHXWOFAY;
	SMILES [Na+].[O-]Br(=O)=O;
Properties
Chemical formula	NaBrO3
Molar mass	150.892 g/mol
Appearance	colorless or white solid
Odor	odorless
Density	3.339 g/cm3
Melting point	381 °C (718 °F; 654 K)
Boiling point	1,390 °C (2,530 °F; 1,660 K)
Solubility in water	27.5 g/100 mL (0 °C) ; 36.4 g/100 mL (20 °C) ; 48.8 g/100 mL (40 °C) ; 90.8 g/100 mL (100 °C)
Solubility	soluble in ammonia ; insoluble in ethanol
Magnetic susceptibility (χ)	−44.2·10−6 cm3/mol
Refractive index (nD)	1.594
Structure
Crystal structure	cubic
Thermochemistry
Std molar; entropy (So298)	130.5 J/mol K
Std enthalpy of; formation (ΔfHo298)	-342.5 kJ/mol
Gibbs free energy (ΔfG˚)	-252.6 kJ/mol
Hazards
Main hazards	Oxidizing agent
Safety data sheet	ICSC 0196
R-phrases (outdated)	R8, R36, R37, R38
S-phrases (outdated)	S26, S27, S36, S37, S39
NFPA 704	0 1 0 OX
Flash point	381 °C (718 °F; 654 K)
Related compounds
Other anions	Sodium chlorate; Sodium iodate
Other cations	Potassium bromate; Calcium bromate
Related compounds	Sodium bromide; Sodium hypobromite; Sodium bromite
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Sodium bromate, the inorganic compound with the chemical formula of NaBrO₃, is the sodium salt of bromic acid. It is a strong oxidant.

Uses

Sodium bromate is mainly used in continuous or batch dyeing processes involving sulfur or vat dyes and as a hair-permagent, chemical agent, or gold solvent in gold mines when used with sodium bromide.

Production

Sodium bromate is produced by passing bromine into a solution of sodium carbonate. It may also be produced by the electrolytic oxidation of sodium bromide. Alternatively, it can also be created by the oxidation of bromine with chlorine to sodium hydroxide at 80 °C.

External links

Sodium Bromate MSDS

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