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Potassium Bromate (Industrial Grade) is a high-purity inorganic bromate salt recognized for its strong oxidizing capability, high bromine content (≈52.9%), and chemical stability in controlled reaction systems. With a purity of ≥99.5% and tightly controlled impurities (chloride <0.2%, sulfate <0.05%, heavy metals <5 ppm), it is well suited for inorganic and organic intermediate synthesis, flame retardant production, and precision metal surface treatment.
Supplied as a white crystalline solid with excellent water solubility and high thermal stability (decomposition temperature >370℃), it ensures consistent reaction kinetics in batch and continuous industrial reactors. Compliant with GB/T 28652-2012 and ASTM E649 standards and aligned with RoHS 2.0 and REACH requirements, it serves as a reliable oxidizing reagent for large-scale chemical manufacturing.
Industrial-grade Potassium Bromate offers ≥99.5% purity (iodometric titration verified), minimizing side reactions during oxidation processes. Low chloride and sulfate content prevents corrosion in stainless steel reactors, while heavy metals <5 ppm reduce contamination risk in fine chemical and pharmaceutical intermediate production.
In bromination and oxidation reactions, controlled impurity levels ensure predictable conversion rates and improved product yield consistency, particularly in multi-step synthesis routes.
Potassium Bromate (Br oxidation state +5) acts as a powerful yet controllable oxidant. Under acidic conditions, it generates bromine species in situ, enabling selective bromination and oxidation reactions.
Applications include:
Oxidative conversion of bromide salts to elemental bromine
Aromatic ring bromination
Oxidation of aldehydes and alcohol intermediates
Controlled oxidative transformations in pharmaceutical precursor synthesis
Compared to alternative oxidants such as potassium permanganate or sodium chlorate, Potassium Bromate provides more stable bromine release kinetics and improved selectivity in bromination systems.
With a melting point of 370℃ and decomposition only above 480℃ (forming KBr and O₂), Potassium Bromate remains stable during high-temperature synthesis operations.
Low hygroscopicity (<0.3% moisture absorption at 23℃/60% RH) prevents caking and maintains free-flowing characteristics during storage. When handled according to oxidizer safety protocols, it presents lower handling risk compared to more reactive bromate salts.
Potassium Bromate offers competitive cost per effective oxidizing equivalent, making it suitable for bulk industrial synthesis. Its consistent performance across inorganic and organic oxidation systems reduces process variability and improves batch reproducibility.
• CAS Number: 7758-01-2
• Molecular Formula: KBrO₃
• Molecular Weight: 167.00 g/mol
• Bromine Content: ≈52.9% (by weight, theoretical maximum)
• Purity (Industrial Grade): ≥99.5% (iodometric titration)
• Appearance: White crystalline solid (free-flowing, no caking)
• Particle Size: D50≈150–200 μm (crystalline form, easy to dissolve)
• Density (Solid): ≈3.27 g/cm³ (20℃)
• Melting Point: 370℃ (decomposes above 480℃)
• Solubility: ≈7.5 g/100 mL in water (20℃); ≈34.5 g/100 mL in water (100℃)
• Moisture Content: <0.3% (23℃/60% RH, Karl Fischer titration)
• Impurity Limits: Chloride <0.2%, Sulfate <0.05%, Heavy Metals <5 ppm, Iron <2 ppm
• Industrial Standards: Meets GB/T 28652-2012 (China) and ASTM E649 (U.S.)
• Eco-Compliance: RoHS 2.0 (2011/65/EU), REACH SVHC (not listed)
• Safety Classification: GHS Category 5 (low toxicity); avoid contact with strong reducing agents/organics
• Packaging: 25 kg polyethylene-lined paper bags or 1,000 kg FIBC bulk bags
Potassium Bromate is widely used as an oxidizing agent in the synthesis of brominated flame retardants such as decabromodiphenyl ethane (DBDPE), Tetrabromophthalic Anhydride, and Ethylenebistetrabromophthalimide.
Its controlled bromine release ensures high bromination efficiency (>98% yield) and stable bromine incorporation, while minimizing discoloration and byproduct formation.
Potassium Bromate serves as an effective oxidizing reagent in the synthesis of pharmaceutical intermediates, agrochemical precursors, dye intermediates, and specialty inorganic compounds.
Typical applications include:
Oxidative bromination of aromatic compounds
Oxidation of sulfides to sulfoxides or sulfones
Conversion of alcohol intermediates to carbonyl compounds
Generation of bromine in situ for controlled halogenation reactions
Its stable oxidation potential and controlled reaction rate make it suitable for multi-step synthesis systems requiring predictable stoichiometry and high reproducibility. Industrial reactors benefit from reduced impurity formation and simplified downstream purification compared to stronger, less selective oxidants.
In PCB fabrication, Potassium Bromate is used in copper etching systems (with hydrobromic acid) to achieve precise circuit patterning. Controlled etching rates improve dimensional accuracy while reducing undercutting.
It is also used in aluminum surface treatment systems to produce micro-rough textures that enhance coating adhesion and thermal dissipation performance.
