Sodium bromate

Sodium bromate
The sodium cation	The bromate anion (space-filling model)
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;
UNII	U54JK6453O ;
UN number	1494
CompTox Dashboard (EPA)	DTXSID9023837 ;
	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	150.89g/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 (S⦵298)	130.5 J/mol K
Std enthalpy of; formation (ΔfH⦵298)	-342.5 kJ/mol
Gibbs free energy (ΔfG⦵)	-252.6 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Oxidizing agent
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H271, H272, H302, H315, H319, H335, H341, H350
Precautionary statements	P201, P202, P210, P220, P221, P261, P264, P270, P271, P280, P281, P283, P301+P312, P302+P352, P304+P340, P305+P351+P338, P306+P360, P308+P313, P312, P321, P330, P332+P313, P337+P313, P362, P370+P378, P371+P380+P375, P403+P233, P405, P501
NFPA 704 (fire diamond)	1 0 0 OX
Flash point	381 °C (718 °F; 654 K)
Safety data sheet (SDS)	ICSC 0196
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). verify (what is ?) 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 edit

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 edit

Sodium bromate is produced by passing bromine into a solution of sodium carbonate.^[1] 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.

3 Br₂+3 Na₂CO₃ → 5 NaBr+NaBrO₃+3 CO₂

Human health issues edit

Bromate in drinking water is undesirable because it is a suspected human carcinogen.^[2]^[3] Its presence in Coca-Cola's Dasani bottled water forced a recall of that product in the UK.^[4]