Sodium bromate

Chemical compound From Wikipedia, the free encyclopedia

Sodium bromate, the inorganic compound with the chemical formula of NaBrO3, is the sodium salt of bromic acid. It is a strong oxidant.[1]

Quick facts Names, Identifiers ...
Sodium bromate
Sodium bromate
Sodium bromate
Names
IUPAC name
Sodium bromate
Other names
Sodium bromate(V)
Bromic acid, sodium salt
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.029.237 Edit this at Wikidata
EC Number
  • 232-160-4
RTECS number
  • EF8750000
UNII
UN number 1494
  • InChI=1S/BrHO3.Na/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1 checkY
    Key: XUXNAKZDHHEHPC-UHFFFAOYSA-M checkY
  • InChI=1/BrHO3.Na/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1
    Key: XUXNAKZDHHEHPC-REWHXWOFAY
  • [Na+].[O-]Br(=O)=O
Properties
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)
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
−44.2·10−6 cm3/mol
1.594
Structure
cubic
Thermochemistry
130.5 J/mol K
−342.5 kJ/mol
−252.6 kJ/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Oxidizing agent
GHS labelling:
GHS03: OxidizingGHS07: Exclamation markGHS08: Health hazard
Danger
H271, H272, H302, H315, H319, H335, H341, H350
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)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
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).
☒N verify (what is checkY☒N ?)
Close

Uses

Sodium bromate is mainly used in continuous or batch dyeing processes involving sulfur or vat dyes and as a hair-permagent. In gold mining, it is used in combination with sodium bromide to dissolve gold.

In organic chemistry, sodium bromate is used for a variety of oxidations such as the conversion of alcohols to ketones.[2] Some such oxidations proceed with scission of C-C bonds.[3]

Production

Sodium bromate can be produced from a solution of sodium carbonate and bromine using chlorine gas as the oxidising agent.[4]

6 Na2CO3 + Br2 + 5 Cl2 → 2 NaBrO3 + 10 NaCl + 6 CO2

It may also be produced by the electrolytic oxidation of aqueous sodium bromide.[5]

Human health issues

Bromate in drinking water is undesirable because it is a suspected human carcinogen.[6][7] Its presence in Coca-Cola's Dasani bottled water forced a recall of that product in the UK.[8]


References

Notes

External links

Related Articles

Wikiwand AI