Sodium bromate

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
CAS Number
  • 7789-38-0 checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:75229 checkY
ChemSpider
  • 23009 checkY
ECHA InfoCard 100.029.237 Edit this at Wikidata
EC Number
  • 232-160-4
PubChem CID
  • 23668195
RTECS number
  • EF8750000
UNII
  • U54JK6453O checkY
UN number 1494
CompTox Dashboard (EPA)
  • DTXSID9023837 Edit this at Wikidata
InChI
  • 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
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
−44.2·10−6 cm3/mol
1.594
Structure
cubic
Thermochemistry
Std molar
entropy (S⦵298)
 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).
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Infobox references
Chemical compound

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 can be produced from a solution of sodium carbonate and bromine using chlorine gas as the oxidising agent.[1] This reaction proceeds according to the equation 6 Na2CO3 + Br2 + 5 Cl2 → 2 NaBrO3 + 10 NaCl + 6 CO2

It may also be produced by the electrolytic oxidation of aqueous sodium bromide.[2]

Human health issues

Bromate in drinking water is undesirable because it is a suspected human carcinogen.[3][4] Its presence in Coca-Cola's Dasani bottled water forced a recall of that product in the UK.[5]


References

  1. ^ CN patent 1034653C, Zhao Naizhi; Wu Zongsheng; Sun Guishi, published 1997-04-23, assigned to Daqinghe Saltern Changlu Hebei Prov. 
  2. ^ WO patent 1996030562A1, David B. Blum; Rodney H. Sergent; Vadim Zolotarsky, "Process and apparatus for generating bromine", published 1996-10-03, assigned to Electrocatalytic Inc 
  3. ^ "Potassium Bromate (Group 2B)". International Agency for Research on Cancer: Summaries and Evaluations. Canadian Centre for Occupational Health and Safety. Retrieved 2008-03-09.
  4. ^ Kurokawa, Yuji; Maekawa, A; Takahashi, M; Hayashi, Y (July 1990). "Toxicity and carcinogenicity of potassium bromate—a new renal carcinogen". Environmental Health Perspectives. 87: 309–35. doi:10.1289/EHP.9087309. JSTOR 3431039. PMC 1567851. PMID 2269236.
  5. ^ "Coke recalls controversial water". BBC News. 2004-03-19. Retrieved 2008-03-09.

Notes

External links

  • Sodium Bromate MSDS On The Wayback Machine: December 6 2018
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Inorganic
Halides
Chalcogenides
Pnictogenides
  • Na3N
  • NaN3
  • NaNH2
  • Na3P
  • Na3As
Oxyhalides
  • NaClO
  • NaClO2
  • NaClO3
  • NaClO4
  • NaBrO
  • NaBrO2
  • NaBrO3
  • NaBrO4
  • NaIO3
  • NaIO4
Oxychalcogenides
  • Na2SO3
  • Na2SO4
  • NaHSO3
  • NaHSO4
  • Na2S2O3
  • Na2S2O4
  • Na2S2O5
  • Na2S2O6
  • Na2S2O7
  • Na2S2O8
  • Na2SeO3
  • Na2SeO4
  • NaHSeO3
  • Na2TeO3
Oxypnictogenides
  • NaNO2
  • NaNO3
  • Na2N2O2
  • NaH2PO4
  • NaPO2H2
  • Na2HPO3
  • Na2PO3F
  • Na3PS2O2
  • Na3PO4
  • Na5P3O10
  • Na4P2O7
  • Na2H2P2O7
  • Na3AsO3
  • Na3AsO4
  • Na2HAsO4
  • NaH2AsO4
  • NaSbO3
Others
  • NaAlH4
  • NaAlO2
  • Na3AlF6
  • NaAl(SO4)2
  • NaAuCl4
  • Na2TiF6
  • NaBH4
  • NaBH3(CN)
  • NaBO2
  • Na2B4O7
  • Na2B2O9
  • Na2B8O13
  • NaBiO3
  • NaCN
  • NaCNO
  • NaCoO2
  • NaH
  • NaHCO3
  • Na4XeO6
  • NaHXeO4
  • NaMnO4
  • NaOCN
  • NaReO4
  • NaSCN
  • NaTcO3
  • NaTcO4
  • NaVO3
  • Na2CO3
  • Na2C2O4
  • Na2C3S5
  • Na2CrO4
  • Na2Cr2O7
  • Na2Cr3O10
  • Na2GeO3
  • Na2He
  • Na2[Fe(CO)4]
  • Na2MnO4
  • Na2MoO4
  • Na3IrCl6
  • Na2PtCl6
  • Na2O(UO3)2
  • Na2S4O6
  • Na2SiO3
  • Na2TiO3
  • Na2U2O7
  • Na2WO4
  • Na2Zn(OH)4
  • Na3VO4
  • Na6V10O28
  • Na4Fe(CN)6
  • Na3Fe(CN)6
  • Na3Fe(C2O4)3
  • Na4SiO4
  • Na2SiF6
  • Na3[Co(NO2)6]
  • NaNSi6
  • Na2PdCl4
Organic
  • CH3ONa
  • C2H5ONa
  • HCOONa
  • C2H5COONa
  • C3H7COONa
  • Na2C4H4O6
  • C4H5NaO6
  • NaCH3COO
  • NaC6H5CO2
  • NaC6H4(OH)CO2
  • NaC12H23O2
  • NaC10H8
  • Na2[Fe[CN5]NO]
  • C6H16AlNaO4
  • NaC6H7O6
  • C5H8NO4Na
  • C6H5Na
  • C4H9Na
  • NaC5H5
  • C15H31COONa
  • C17H33COONa
  • C18H35O2Na
  • C164H256O68S2Na2
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Compounds containing the bromate group
HBrO3 He
Li Be B C N O F Ne
NaBrO3 Mg Al Si P S Cl Ar
KBrO3 Ca(BrO3)2 Sc(BrO3)3 Ti V Cr Mn(BrO3)2 Fe(BrO3)3 Co(BrO3)2 Ni(BrO3)2 Cu(BrO3)2 Zn(BrO3)2 Ga Ge As Se Br2O3
Br2O5 		Kr
RbBrO3 Sr(BrO3)2 Y(BrO3)3 Zr Nb Mo Tc Ru Rh Pd AgBrO3 Cd In Sn Sb Te I Xe
Cs Ba(BrO3)2 * Lu(BrO3)3 Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
 
* La(BrO3)3 Ce(BrO3)3 Pr(BrO3)3 Nd(BrO3)3 Pm(BrO3)3 Sm(BrO3)3 Eu(BrO3)3 Gd(BrO3)3 Tb(BrO3)3 Dy(BrO3)3 Ho(BrO3)3 Er(BrO3)3 Tm(BrO3)3 Yb(BrO3)3
** Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No


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