7758-01-2

Basic information

• Product Name: Potassium bromate
• Synonyms: Bromicacid, potassium salt (8CI,9CI);Potassium bromate(DOT)
• CAS NO: 7758-01-2
• Molecular Formula: BrO₃*K
• Molecular Weight: 167.0005
• EINECS: 231-829-8
• Mol File: 7758-01-2.mol
• Article Data: 1

Chemical Properties

• Melting Point: 350℃
• Boiling Point: 370°C
• Appearance: white crystals, granules or powder
• Density: 3.27 g/cm³
• Vapor Density: 5.8 (vs air)
• Water Solubility: 70 g/L (20℃)
• CAS DataBase Reference: Potassium bromate(CAS DataBase Reference)
• NIST Chemistry Reference: Potassium bromate(7758-01-2)
• EPA Substance Registry System: Potassium bromate(7758-01-2)

Safety Data

• Hazard Codes: O:Oxidizing agent
• Statements: R25:; R45:; R9:
• Safety Statements: S45:; S53:
• RIDADR: 1484
• HazardClass: 5.1
• PackingGroup: II
• Hazardous Substances Data: 7758-01-2(Hazardous Substances Data)

Usage

General Description

Potassium bromate is an oxidizing agent and additive commonly used in the food industry for bread and flour processing. It is a white, crystalline powder that can increase the strength and elasticity of dough by strengthening the gluten in flour. However, it has been banned in several countries and restricted in others due to concerns about its potential health risks. Studies have shown that potassium bromate may be carcinogenic and have negative effects on the kidneys and nervous system. As a result, many food manufacturers have switched to alternative additives and processes to achieve the same baking results without the use of potassium bromate.

InChI:InChI=1/BrHO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1

Synthetic route

bromine (7726-95-6) + potassium carbonate (584-08-7) → potassium bromate (7758-01-2) + potassium bromide (7558-02-3)

Conditions	Yield
In not given byproducts: H2O; at 80 °C;
In not given lead Br2 into soln. of KOH to satn.;
In not given lead Br2 into soln. of KOH to satn.;

bromine (7726-95-6) + potassium hydroxide → potassium bromate (7758-01-2) + potassium bromide (7558-02-3)

Conditions	Yield
In not given byproducts: H2O; at 50 °C, with 20-30 °Be KOH; quick heating to boiling point;
byproducts: H2O;
In not given lead Br2 into soln. of KOH to satn.;
byproducts: H2O;
In not given lead Br2 into soln. of KOH to satn.;

bromine chloride (13863-41-7) + potassium hydroxide → potassium bromate (7758-01-2)

bromine (7726-95-6) + oxygen (80937-33-3) + potassium (7440-09-7) → potassium bromate (7758-01-2)

potassium hypochlorite + bromine (7726-95-6) → potassium bromate (7758-01-2)

Conditions	Yield
In not given

potassium bromide (7558-02-3) → potassium bromate (7758-01-2)

Conditions	Yield
In not given Electrolysis;
In not given Electrochem. Process;
In not given Electrolysis; Pt anode;

potassium bromide (7558-02-3) + potassium hydroxide → potassium bromate (7758-01-2)

Conditions	Yield
With chlorine byproducts: KCl; warming; cooling, crystn.;

potassium chlorate (3811-04-9) + potassium bromide (7558-02-3) → potassium bromate (7758-01-2)

Conditions	Yield
melt;

sodium bromate + potassium ion → potassium bromate (7758-01-2)

Conditions	Yield
In not given Electrochem. Process; crystd. on the anode;

bromine (10097-32-2) + oxygen (80937-33-3) + potassium (7440-09-7) → potassium bromate (7758-01-2)

bromine (10097-32-2) → potassium bromate (7758-01-2)

Conditions	Yield
With potassium hydroxide In water byproducts: KBr; with filtration;
With KOH In water byproducts: KBr; with filtration;

bromine trifluoride (7787-71-5) → potassium bromate (7758-01-2)

Conditions	Yield
With potassium hydroxide byproducts: KBr, KF, O2;	<1
With KOH byproducts: KBr, KF, O2;	<1

potassium perbromate (22207-96-1) + potassium bromite (76908-17-3) → potassium bromate (7758-01-2)

Conditions	Yield
by heating;
by heating;

potassium chlorate (3811-04-9) → potassium bromate (7758-01-2)

Conditions	Yield
With potassium bromide In melt in melt very low yield of KBrO3 (decompn.);
With KBr In melt in melt very low yield of KBrO3 (decompn.);

potassium hypobromite (13824-97-0) → potassium bromate (7758-01-2)

Conditions	Yield
In not given decompn. in 0.5-1mol KBrO/l soln.;

potassium hexafluorobromate (32312-22-4) + water (7732-18-5) → potassium bromate (7758-01-2)

Conditions	Yield
In acetonitrile byproducts: HF; excess of water;

ozone (10028-15-6) + potassium bromide (7558-02-3) → potassium bromate (7758-01-2)

Conditions	Yield
With water at 60℃; for 0.833333h; Kinetics; Mechanism; Temperature;

potassium bromate (7758-01-2) + silver nitrate → silver bromate (7783-89-3)

Conditions	Yield
In water an aq. soln. of AgNO3 is added dropwise to a stirred aq. soln. of KBrO3under reflux over 3 min, refluxed for 5 min; cooled to room temp., the ppt. is filtd., washed eith cooled distilled water, then with acetone, dried;	98%
In water dropping equiv. amts. of 5% aq. KBrO3 soln. during mixing to 10% aq. soln. of AgNO3;
In water excess of 1.3 n cold aq. AgNO3; 0.6 n hot aq. KBrO3 soln.;

potassium bromate (7758-01-2) + potassium iodide (7681-11-0) → potassium iodate (7758-05-6)

Conditions	Yield
In melt melting 1 mol KI/ 1.5 mol KBrO3;;	87%
melting;

potassium bromate (7758-01-2) → potassium iodate (7758-05-6)

Conditions	Yield
With potassium iodide molar ratio of KI:KBrO3 = 1:1.5;	87%
With KI molar ratio of KI:KBrO3 = 1:1.5;	87%
With water; iodine byproducts: Br2; first heating, than cooling to cryst. KIO3;
With I2; H2O byproducts: Br2; first heating, than cooling to cryst. KIO3;

potassium bromate (7758-01-2) + hydrazine carboxamide (4426-72-6, 51433-48-8) → nitrogen (7727-37-9)

Conditions	Yield
With sulfuric acid In not given	75%

potassium bromate (7758-01-2) + {CoCO3phan2}Cl*H2O → [Co(1,10-phenanthroline)2CO3]BrO3*3.5H2O

Conditions	Yield
In water byproducts: KCl; a soln. of Co-complex and KBrO3 in water were mixed, allowed to stand for three days at room temp.; crystals were collected and dried in air; elem. anal.;	75%

potassium bromate (7758-01-2) + 1,2-dicarba-closo-dodecaborane(12) (16872-09-6) + bromine (7726-95-6) → 9-bromo-1,2-dicarba-closo-dodecaborane (17141-89-8)

Conditions	Yield
In sulfuric acid; acetic acid dissolving carborane in 50% aq. H2SO4 and acetic acid, addn. of Br2 and KBrO3 (equimolar amounts of carborane and Br(1+)), boiling, cooling, addn. of H2O, pptn.;;	70%
In sulfuric acid; acetic acid aq. H2SO4; dissolving carborane in 50% aq. H2SO4 and acetic acid, addn. of Br2 and KBrO3 (equimolar amounts of carborane and Br(1+)), boiling, cooling, addn. of H2O, pptn.;;	70%
In sulfuric acid; acetic acid byproducts: 9,12-dibromo-o-carborane; dissolving carborane in 50% aq. H2SO4 and acetic acid, addn. of Br2 and KBrO3 (2fold amounts of Br(1+)), boiling, cooling, addn. of H2O, pptn.;;	30%
In sulfuric acid; acetic acid byproducts: 9,12-dibromo-o-carborane; aq. H2SO4; dissolving carborane in 50% aq. H2SO4 and acetic acid, addn. of Br2 and KBrO3 (2fold amounts of Br(1+)), boiling, cooling, addn. of H2O, pptn.;;	30%

potassium bromate (7758-01-2) + 1,2-dimethyl-1,2-dicarba-closododecaborane (17032-21-2) + iron (III) bromide → 1.2-(CH3)2-9-Br-1.2-C2B10H9 (42570-28-5)

Conditions	Yield
In sulfuric acid; acetic acid dissolving carborane in 50% H2SO4 and glacial acetic acid, addn. of Br2 and KBrO3 (ratio carborane:Br(1+)=1:1), boiling, cooling, addn. of H2O, pptn.;; 40% unreacted carborane;;	60%
In sulfuric acid; acetic acid aq. H2SO4; dissolving carborane in 50% H2SO4 and glacial acetic acid, addn. of Br2 and KBrO3 (ratio carborane:Br(1+)=1:1), boiling, cooling, addn. of H2O, pptn.;; 40% unreacted carborane;;	60%

potassium bromate (7758-01-2) + Cu(pyridine-2-carbaldehyde thiosemicarbazone)(NO3) → bis[(pyridine-2-carboxaldehyde thiosemicarbazolato)bromocopper(II)] + bis[(2-amino-5-pyridin-2-yl-1,3,4-oxadiazole)(H2O)3 copper(II)] (SO4)2

Conditions	Yield
With NaOH In water mixed with stirring, pH adjusted to 6 (aq.NaOH), stirred overnight at room temp.; filtered, washed (water, acetone), nother liquor crystd. at room temp. for 2 weeks, elem. anal.;	A n/a B 58%

potassium bromate (7758-01-2) + bromine pentafluoride (177570-08-0, 7789-30-2, 676353-69-8) + hydrogen fluoride (7664-39-3) → potassium difluorodioxobromate + bromine fluoride dioxide (22585-64-4) + potassium tetrafluoro-oxobromate (60995-34-8)

Conditions	Yield
In hydrogen fluoride byproducts: Br2; HF (liquid); excess of BrF5, standing in Kel-F tube for 3-5 d; distn. off of BrO2F (vac.; trap at -48°C); product mixt. (10% KBrF4O) not sepd., detd. by Raman spectroscopy;	A n/a B 55% C n/a

potassium bromate (7758-01-2) + mercury(II) nitrate → mercury(II) bromate dihydrate

Conditions	Yield
In nitric acid aq. HNO3; 2n HNO3 soln.;;	50%
In water
In water
In water

potassium bromate (7758-01-2) + hydrogen fluoride (7664-39-3) → potassium difluorodioxobromate + K(1+)*BrF4O(1-)=K[BrF4O] (60995-34-8) + bromine fluoride dioxide (22585-64-4)

Conditions	Yield
In neat (no solvent) absence of air and moisture;	A n/a B n/a C 50%

potassium bromate (7758-01-2) → bromine (7726-95-6) + oxygen (80937-33-3) + potassium bromide (7558-02-3)

Conditions	Yield
at 180 °C;	A 0.08% B 29.56% C n/a

potassium bromate (7758-01-2) + lead(II) nitrate + water (7732-18-5) + potassium hydroxide → Pb4(OH)4(4+)*3BrO3(1-)*NO3(1-)

Conditions	Yield
at 100℃; for 72h; Autoclave; High pressure;	10%

potassium bromate (7758-01-2) + hydrazonium sulfate (10034-93-2) → hydrogen azide (916329-38-9) + ammonia (7664-41-7)

Conditions	Yield
In not given yield is higher in presence of solid Ag2SO4;	A 6% B 9%
In not given yield is higher in presence of solid Ag2SO4;	A 6% B 9%

potassium bromate (7758-01-2) + thallium(III) sulfate + malonic acid (141-82-2) → TlBr(2+) (97867-16-8) + TlBr2(1+) (97867-17-9) + carbon dioxide (124-38-9)

Conditions	Yield
With sodium hydrogen sulfate; sulfuric acid In water; acetic acid Kinetics; byproducts: H2O; under N2 and subdued light; KBrO3 soln. added to mixt. of malonic acid (excess), H2SO4, Mn complex, Tl2(SO4)3 and NaHSO4 in H2O-acetic acid at 293-323 K; monitored iodometrically;

potassium bromate (7758-01-2) + chromium(III) oxide → potassium dichromate

Conditions	Yield
In water heating of Cr2O3 in KBrO3 soln.;;

potassium bromate (7758-01-2) + ammonium carbonate → potassium bromide (7558-02-3)

Conditions	Yield
redn.;

potassium bromate (7758-01-2) + barium sulfide → potassium bromide (7558-02-3)

Conditions	Yield
With hydrogen bromide byproducts: BaSO4; redn. during glowing; evapn.;

potassium bromate (7758-01-2) + potassium bromide (7558-02-3) → bromine (7726-95-6)

Conditions	Yield
With D-Fructose; oxalic acid In sulfuric acid byproducts: Ce(3+), CO2, H2O; oscillatory reaction monitored electrocmically;
With sulfuric acid In water

potassium bromate (7758-01-2) + urea (57-13-6) → potassium bromide (7558-02-3)

Conditions	Yield
redn.;

potassium bromate (7758-01-2) → bromine (7726-95-6)

Conditions	Yield
With sulfuric acid; cobalt(II) bromide In water obtain Br2 from KBr by adding H2SO4 and more KBrO3;	>99
With sulfuric acid; iron(II) bromide In water byproducts: Fe2O3; obtain Br2 from KBr by adding H2SO4 and more KBrO3;	>99
With sulfuric acid; nickel dibromide In water obtain Br2 from KBr by adding H2SO4 and more KBrO3;	>99

potassium bromate (7758-01-2) → bromine (7726-95-6) + potassium bromide (7558-02-3)

Conditions	Yield
With cobalt(II) bromide In water at room temp. slow, at b.p. fast reaction; instead of KBrO3 also possible to use other alkali or alkaline earth bromates; isolation of Br2 directly from vapor; crystn. of KBr after filtering;	A >99 B n/a
With iron(II) bromide In water byproducts: Fe2O3; at room temp. slow, at b.p. fast reaction; instead of KBrO3 also possible to use other alkali or alkaline earth bromates; isolation of Br2 directly from vapor; crystn. of KBr after filtering of Fe2O3;	A >99 B n/a
With nickel dibromide In water at room temp. slow, at b.p. fast reaction; instead of KBrO3 also possible to use other alkali or alkaline earth bromates; isolation of Br2 directly from vapor; crystn. of KBr after filtering;	A >99 B n/a
With chlorine byproducts: chloride; heating in closed tube at 200 ° C;
With chlorine

potassium bromate (7758-01-2) → bromide (10097-32-2) + bromine (7726-95-6)

Conditions	Yield
With D-Fructose; sulfuric acid; tartaric acid; cerium(IV) ammonium sulphate In water Kinetics; system and order of addn.: H2SO4 (1.5 M) + BrO3(1-) (0.06 M) + Ce(4+) (1.45E-3 M) + fructose (0.01-0.4 M) + tartaric acid (0.005-0.6 M); temp. =26+/-1°C; with and without KBr; not isolated; determination of Br(1-) with ion-sensitive electrode and of Br2 and Ce(4+) spectrophotometrically;

potassium bromate (7758-01-2) → potassium bromide (7558-02-3)

Conditions	Yield
With ammonia redn.;
With pyrographite glowing;
In neat (no solvent) byproducts: O2; decompn. at 410-425°C; TG, DTA;

potassium bromate (7758-01-2) → bromide (10097-32-2)

Conditions	Yield
With H2SO4 or H3PO4; manganese(II) Kinetics; Belousov-Zhabotinskii type reaction (cat. Mn(2+)) with one of aldosugars(arabinose, glucose, galactose, lactose or maltose) and/or acetone; tem p. 30+/-0.2°C; bromide ion selective electrode;
With sulfur dioxide In water slight excess of KBrO3;
byproducts: oxygen; by heating;
With malonic acid; cerium(III) sulfate In sulfuric acid Kinetics; investigation of Belousov-Zhabotinsky-react. of KBrO3, Ce2(SO4)3 and malonic acid in 1.5M H2SO4 (N2, const. stirring, various concns., with and without influence of passing oxygen) simultaneously followed by ESR, potentiometry and photometry;;
byproducts: oxygen; by heating;

potassium bromate (7758-01-2) + chromium (III) ion → dichromate anion (13907-47-6)

Conditions	Yield
With phosphoric acid; manganese (4+) In not given without catalyst very slow react. in boiling soln.;
With phosphoric acid; manganese(III) ion In not given without catalyst very slow react. in boiling soln.;
With H2SO4 or; H3PO4; manganese(III) ion In not given without catalyst very slow react. in boiling soln.;
With H2SO4 or; H3PO4; manganese (4+) In not given without catalyst very slow react. in boiling soln.;

potassium bromate (7758-01-2) + iron (7439-89-6) → potassium bromide (7558-02-3)

Conditions	Yield
byproducts: Fe2O3; redn.;
Electrochem. Process; redn.;
byproducts: Fe2O3; redn.;

potassium bromate (7758-01-2) + malonic acid (141-82-2) + mercury(II) diacetate (1600-27-7) → mercury(II) monobromide(1+) + carbon dioxide (124-38-9) + mercury dibromide

Conditions	Yield
With sodium hydrogen sulfate; sulfuric acid In water; acetic acid Kinetics; byproducts: H2O; under N2 and subdued light; KBrO3 soln. added to mixt. of malonic acid (excess), H2SO4, Mn complex, Hg acetate and NaHSO4 in H2O-acetic acid at 293-323 K; monitored iodometrically;
With sulfuric acid; lithium fluoride In water; acetic acid Kinetics; byproducts: H2O; under N2 and subdued light; KBrO3 soln. added to mixt. of malonic acid (excess), H2SO4, Mn complex, Hg acetate and LiF in H2O-acetic acid at 293-323 K; monitored iodometrically;
With sodium pyrophosphate; sulfuric acid In water; acetic acid Kinetics; byproducts: H2O; under N2 and subdued light; KBrO3 soln. added to mixt. of malonic acid (excess), H2SO4, Mn complex, Hg acetate and Na4P2O7 in H2O-acetic acid at293-323 K; monitored iodometrically;
With sulfuric acid; sodium perchlorate In water; acetic acid Kinetics; byproducts: H2O; under N2 and subdued light; KBrO3 soln. added to mixt. of malonic acid (excess), H2SO4, Mn complex, Hg acetate and NaClO4 in H2O-acetic acid at 293-323 K; monitored iodometrically;

Upstream product

• 7726-95-6 bromine 
• 80937-33-3 oxygen 
• 7440-09-7 potassium 
• 7558-02-3 potassium bromide 
• 3811-04-9 potassium chlorate 
• 24203-36-9 potassium ion 
• 10097-32-2 bromine 
• 7787-71-5 bromine trifluoride 
• 22207-96-1 potassium perbromate 
• 76908-17-3 potassium bromite 
• 10028-15-6 ozone 
• 32312-22-4 potassium hexafluorobromate 
• 7732-18-5 water 
• 13824-97-0 potassium hypobromite 

Downstream Products

• 7558-02-3 potassium bromide 
• 7726-95-6 bromine 
• 7758-05-6 potassium iodate 
• 10097-32-2 bromide 
• 124-38-9 carbon dioxide 
• 86119-84-8 phosphoric acid 
• 1015938-55-2 diselenium dibromide 
• 7727-37-9 nitrogen 
• 7664-93-9 sulfuric acid 
• 7732-18-5 water 
• 13863-41-7 bromine chloride 
• 22207-96-1 potassium perbromate 
• 76908-17-3 potassium bromite 
• 14550-84-6 thallium(I) bromate 

Related news

Genotoxic effects of Potassium bromate (cas 7758-01-2) on human peripheral lymphocytes in vitro07/20/2019

The aim of this study was to investigate the genotoxic effects of potassium bromate, which is used as a bleaching agent in flour, on human peripheral blood lymphocytes in vitro by sister chromatid exchange (SCE), chromosomal aberrations (CA) and micronucleus (MN) tests, and also to determine whe...detailed

Modulation of hypersensitivity to oxidative DNA damage in ATM defective cells induced by Potassium bromate (cas 7758-01-2) by inhibition of the Poly (ADP-ribose) polymerase (PARP)07/21/2019

The ataxia telangiectasia mutated (ATM) protein is a pivotal multifunctional protein kinase predominantly involved in DNA damage response, as well as in maintaining overall functional integrity of the cells. Apart from playing its major role in regulating the cellular response to DNA damage, ATM...detailed

High rate in situ laser-induced synthesis of copper nanostructures performed from solutions containing Potassium bromate (cas 7758-01-2) and ethanol.07/19/2019

The synthesis of copper nanostructures from solutions in the presence of oxidizing additives on the surface of opaque and transparent substrates was performed upon laser irradiation at 532 nm. Organic alcohols such as ethanol and ethylene glycol were used as the reducing agents whereas potassium...detailed

Subchronic toxicity evaluation of Potassium bromate (cas 7758-01-2) in Fischer 344 rats07/17/2019

Male F344 rats were exposed to potassium bromate (KBrO3) in drinking water at concentrations of 0, 5, 20, 100, 200, or 400 mg/L for 2 or 13 weeks. Endpoints evaluated included clinical observations, body weights, serum chemistry, gross pathology, organ weights, and select tissue histopathology (...detailed

Effects of Potassium bromate (cas 7758-01-2) on male rat growth and testicular histology07/16/2019

ObjectiveTo investigate the effects of supplementation of potassium bromate (KBrO3) to drinking water on the growth rate, pubertal weight, testis & epididymal weights and testicular histology of growing male rats.detailed

Deleterious effects of Potassium bromate (cas 7758-01-2) administration on renal and hepatic tissues of Swiss mice07/15/2019

Potassium bromate (KBrO3) is widely used as a food additive and is a major water disinfection by-product. The present study reports the side effects of KBrO3 administration in Swiss mice. Animals were randomly divided into three groups: control, low dose KBrO3 (100 mg/kg/day) and high dose KBrO3...detailed

Chemiluminescence determination of Potassium bromate (cas 7758-01-2) in flour based on flow injection analysis07/13/2019

A novel and highly sensitive flow-injection chemiluminescence method for the determination of potassium bromate (KBrO3) has been developed. This method is based on the luminescence properties of the KBrO3–Na2SO3–quinine sulfate system in acid medium. Optimized experimental conditions and a pos...detailed

Relevant articles and documents

Interaction between gaseous ozone and crystalline potassium bromide

The formation of nonvolatile products of the oxidation of a bromide ion during the interaction between gaseous ozone and powdered crystalline KBr is studied. It is found that potassium bromate KBrO3 is the main product of the reaction. The influence of major experimental factors (the duration of ozonation, the concentration of ozone, the humidity of the initial gas, and the temperature) on the rate of formation of bromate is studied. The effective constants of the formation of bromate during the interaction between O3 and Br– in a heterogeneous gas–solid body system and in a homogeneous aqueous solution are compared.