Sodium bromate

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Sodium bromate
Sodium bromate
The sodium cation
The sodium cation
The bromate anion (space-filling model)
The bromate anion (space-filling model)
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
Std enthalpy of
formation
(ΔfH⦵298)
 -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 ?)

Sodium bromate, the

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

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

Bromate in drinking water is undesirable because it is a suspected human

UK.[4]

References

  1. ^ "Br2 + Na2CO3 = NaBr + NaBrO3 + CO2 | Chemical reaction and equation".
  2. ^ "Potassium Bromate (Group 2B)". International Agency for Research on Cancer: Summaries and Evaluations. Canadian Centre for Occupational Health and Safety. Retrieved 2008-03-09.
  3. PMID 2269236
    .
  4. ^ "Coke recalls controversial water". BBC News. 2004-03-19. Retrieved 2008-03-09.

External links


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