Sodium perbromate

Sodium perbromate IUPAC name Sodium perbromate Other names Sodium bromate(VII) Identifiers InChI InChI=1/BrHO4.Na/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 InChIKey CLURAKRVQIPBCC-REWHXWOFAP Standard InChI InChI=1S/BrHO4.Na/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 Standard InChIKey CLURAKRVQIPBCC-UHFFFAOYSA-M CAS number [33497-30-2] ChemSpider 168096 Properties Chemical formula NaBrO4 Molar mass 166.89 g mol−1 Solubility in water very soluble Related compounds Other anions Sodium perchlorate Sodium periodate Other cations Lithium perbromate Potassium perbromate Rubidium perbromate Caesium perbromate Other compounds Sodium bromide Sodium hypobromite Sodium bromite Sodium bromate Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Sodium perbromate monohydrate IUPAC name Sodium perbromate — water (1/1) Identifiers InChI InChI=1/BrHO4.Na.H2O/c2-1(3,4)5;;/h(H,2,3,4,5);;1H2/q;+1;/p-1 InChIKey YLKXJWSPLJTJSS-REWHXWOFAV Standard InChI InChI=1S/BrHO4.Na.H2O/c2-1(3,4)5;;/h(H,2,3,4,5);;1H2/q;+1;/p-1 Standard InChIKey YLKXJWSPLJTJSS-UHFFFAOYSA-M CAS number [56607-33-1] ChemSpider 2284849 Properties Chemical formula NaBrO4·H2O Molar mass 184.90 g mol−1 Structure Space group P2/c Lattice constant a = 1575.75(19) pm, b = 573.73(15) pm, c = 1133.90(19) pm, α = 90°, β = 111.193(10)°, γ = 90° Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Sodium perbromate, NaBrO₄, is the sodium salt of perbromic acid. It is best prepared by the oxidation of sodium bromate in alkaline solution (5 M sodium hydroxide) by gaseous fluorine:

BrO−3 + F₂ + 2 OH⁻ → BrO−4 + 2 F⁻ + H₂O

The yield is about 20%, and the reaction can be operated on a 100-gram scale. Perbromic acid can be prepared from the resulting sodium perbromate by ion exchange, and used to prepare other perbromates.