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Potassium bromate

Description References
Potassium bromate
Potassium bromate
CAS No.
7758-01-2
Chemical Name:
Potassium bromate
Synonyms
eecno.e924;POTASSIUM BROMATE;potassium bronlate;Potassiumbromate,99%;POTASSIUM BROMATE PURE;POTASSIUM BROMATE, ACS;Potassium bromate, p.a.;Potassium bromate, 99.5%;POTASSIUM BROMATE-BROMIDE;Bromicacid potassium salt
CBNumber:
CB5281569
Molecular Formula:
BrKO3
Formula Weight:
167
MOL File:
7758-01-2.mol

Potassium bromate Properties

Melting point:
350 °C
Density 
3.27
storage temp. 
Store below +30°C.
solubility 
H2O: 0.1 M at 20 °C, clear, colorless
form 
Powder/Solid
color 
White
PH
5.0-9.0 (25℃, 50mg/mL in H2O)
Water Solubility 
70 g/L (20 ºC)
Merck 
14,7617
Stability:
Stability Strong oxidizer - contact with combustible materials may cause fire. Incompatible with combustible material, organics, reducing agents, aluminium, finely powdered metals.
CAS DataBase Reference
7758-01-2(CAS DataBase Reference)
EPA Substance Registry System
Bromic acid, potassium salt(7758-01-2)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  O,T
Risk Statements  45-9-25-22
Safety Statements  53-45
RIDADR  UN 1484 5.1/PG 2
WGK Germany  3
RTECS  EF8725000
TSCA  Yes
HazardClass  5.1
PackingGroup  II
Hazardous Substances Data 7758-01-2(Hazardous Substances Data)
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H271 May cause fire or explosion; strong oxidiser Oxidising liquids;Oxidising solids Category 1 Danger P210, P220, P221, P280, P283,P306+P360, P371+P380+P375,P370+P378, P501
H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501
H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
H350 May cause cancer Carcinogenicity Category 1A, 1B Danger
Precautionary statements:
P201 Obtain special instructions before use.
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P220 Keep/Store away from clothing/…/combustible materials.
P221 Take any precaution to avoid mixing with combustibles/…
P283 Wear fire/flame resistant/retardant clothing.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P306+P360 IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P371+P380+P375 in case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
P405 Store locked up.

Potassium bromate price More Price(14)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 1.04912 Potassium bromate for analysis EMSURE Reag. Ph Eur 7758-01-2 2EA $82.5 2017-11-08 Buy
Sigma-Aldrich 1.04912 Potassium bromate for analysis EMSURE Reag. Ph Eur 7758-01-2 1EA $62 2017-11-08 Buy
Alfa Aesar 040013 Potassium bromate, ACS, 99.8% min 7758-01-2 100g $42.4 2018-11-16 Buy
Alfa Aesar 040013 Potassium bromate, ACS, 99.8% min 7758-01-2 500g $90.2 2018-11-16 Buy
Sigma-Aldrich 60085 Potassium bromate puriss. p.a., ACS reagent, ≥99.8% (dried material, RT) 7758-01-2 250g $119 2018-11-20 Buy

Potassium bromate Chemical Properties,Uses,Production

Description

Potassium bromate is the potassium salt of bromate. It is typically used in the United States as a flour improver. It acts to strengthen the dough and to allow higher rising. Potassium bromate (KBrO3) is an oxidizing agent that has been used as a food additive, mainly in the bread-making process. However, it has been realized that it is a potential carcinogenic agent. The agent is carcinogenic in rats and nephrotoxic in both man and experimental animals when given orally. It has been demonstrated that KBrO3 induces renal cell tumors, mesotheliomas of the peritoneum, and follicular cell tumors of the thyroid. In addition, experiments aimed at elucidating the mode of carcinogenic action have revealed that KBrO3 is a complete carcinogen, possessing both initiating and promoting activities for rat renal tumorigenesis.

References

[1]Ekop, A. S., I. B. Obot, and E. N. Ikpatt. "Anti-Nutritional Factors and Potassium Bromate Content in Bread and Flour Samples in Uyo Metropolis, Nigeria." Journal of Chemistry 5.4(2008):736-741.
[2]Kurokawa, Y, et al. "Carcinogenicity of potassium bromate administered orally to F344 rats. " Journal of the National Cancer Institute 71.5(1983):965-72.
[3]Kurokawa, Y, et al. "Toxicity and carcinogenicity of potassium bromate--a new renal carcinogen. " Environmental Health Perspectives 87.1(1990):309.

Chemical Properties

white crystals, granules or powder

Uses

It is used in oxidizing agent in acid solutions.

Uses

Bread- and flour-improving agent; in analytical chemistry.

General Description

A white crystalline solid.

Air & Water Reactions

Water soluble.

Reactivity Profile

Potassium bromate is a strong oxidizing agent. Forms very flammable mixtures with combustible materials. Such mixtures may be explosive if the combustible material is finely divided and are often ignitable by friction. A mixture with finely divided aluminum can explode by heat, percussion, and friction [Mellor 2:310. 1946-47]. Reacts explosively with selenium [Mellor 2 Supp1:763. 1956]. Prolonged exposure to fire or heat can result in an explosion .

Health Hazard

Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.

Purification Methods

Crystallise KBrO3 from distilled H2O (2mL/g) between 100o and 0o. To remove bromide contamination, a 5% solution in distilled H2O, cooled to 10o, is bubbled with gaseous chlorine for 2hours, then filtered and extracted with reagent grade CCl4 until colourless and odourless. After evaporating the aqueous phase to about half its volume, it is cooled again slowly to about 10o. The crystalline KBrO3 that separates, is washed with 95% EtOH and dried in a vacuum [Boyd et al. J Am Chem Soc 74 237 1952]. Another way to remove Br-ions is by stirring several times in MeOH and then drying at 150o [Field & Boyd J Phys Chem 89 3767 1985].

Potassium bromate Preparation Products And Raw materials

Raw materials

Preparation Products


Potassium bromate Suppliers

Global( 151)Suppliers
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Shanghai Time Chemicals CO., Ltd.
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Mainchem Co., Ltd.
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Weifang Kaihong Chemical Limited 86-536-8865335,13953637678
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Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
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Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 saleschina@alfa-asia.com China 30308 84
BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807
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JinYan Chemicals(ShangHai) Co.,Ltd. 13817811078,021-50426030
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