Potassium Bromate - Potassium Bromate

KBrO ₃ (167.00). Potassium hydroxide and bromine are reacted in an aqueous solution to produce potassium hypobromite KBrO, which is then boiled to convert to KBrO ₃ and cooled to precipitate crystals. White trigonal ionic crystals (or powder). Contains trigonal pyramidal BrO ₃ ^- . Br-O1.64 Å. ∠O-Br-O106°. Density 3.27 g cm ^-3 . When ignited, it decomposes at temperatures above 370 °C, releasing O ₂ .

_2KBrO3 → 2KBr + _3O2

A strong oxidizing agent. When a solid is mixed with easily oxidized substances such as carbon or sulfur, it explodes when heated. It is used as a bleaching and modifying agent for flour, and as an analytical reagent (for bromide titration and as a standard substance for redox titration). Toxic. [CAS 7758-01-2]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

KBrO₃(167.00)．水酸化カリウムと臭素とを水溶液中で反応させて次亜臭素酸カリウムKBrOをつくり，さらにこの液を煮沸してKBrO₃にかえた後に，冷却して結晶を析出させる．白色の三方晶系のイオン結晶(または粉末)．三方すい型のBrO₃^－を含む．Br-O1.64 Å．∠O-Br-O106°．密度3.27 g cm^－3．強熱すると，370 ℃ 以上で O₂ を発生して分解する．

2KBrO₃ → 2KBr ＋ 3O₂

強い酸化剤．固体に炭素や硫黄などの酸化されやすい物質をまぜたものは加熱すると爆発する．小麦粉の漂白・改質剤，分析試薬(臭素化滴定用や，酸化還元滴定の標準物質)などに用いられる．有毒．[CAS 7758-01-2]

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