二臭素酸バリウム 化学特性,用途語,生産方法
説明
Barium bromate is used extensively to form other
bromates, including the alkali metal bromates which
are used extensively in Industry. HBrO3, a colorless
liquid, is made by the addition of dilute sulfuric acid
to barium bromate. It dissociates extensively in aqueous
solution and is a strong acid.
The scientific literature contains a few studies of
barium bromate chiefly due to interest in Industry for
its use to prepare other bromate salts.
This salt is available commercially, worldwide.
化学的特性
Barium bromate is a white crystalline powder.
使用
Barium bromate [Ba(BrO3)2] is used as a corrosion inhibitor to prevent rust and as an oxidizing
agent and chemical reagent.
製造方法
Barium Bromate may be prepared by reaction of the hydroxide with
sodium bromate:
Ba(OH)2＋ 2NaBrO3→Ba(BrO3)2＋ 2NaOH
Barium bromate is relatively insoluble, and has
a value of 0.782 g/100 ml of water at 298 K,if recrystallized, it forms a monohydrate,
Ba(BrO3)2·H2O, which occurs as white or colorless, prismatic
crystals.
A new and general method of inducing a precipitation from homogeneous solution has been applied to the separation of barium and strontium. The precipitation of barium bromate, a water-soluble compound, is brought about by a gradual change in the composition of the solvent media. An organic compound, such as methanol or tetrahydrofuran, is allowed to diffuse into the original water solution, thus slowly converting the solution into a water organic mixture. Strontium bromate is about 40 times more soluble in water than barium bromate. The increased solubility plus the greater stability of the strontium MEDTA chelate tend to hold the strontium in solution. The chief advantage of this method over the separation of Sr from Ba by precipitation of barium chromate is in the preparation of barium compounds. Usually, barium must be separated from the chromate before proceeding. However, barium bromate can be easily converted to the oxide, eliminating this separation step.
一般的な説明
A white crystalline solid or powder. Slightly soluble in water and denser than water. Very toxic by ingestion or inhalation. Fire hazard when in contact with organic materials and may explode when heated above 300°F. Used as a corrosion inhibitor and to manufacture other chemicals.
空気と水の反応
Slightly soluble in water.
反応プロフィール
BARIUM BROMATE is an oxidizing agent. May react violently with combustibles and reducing agents such as textiles, oil, fat, sugar, sawdust, ammonium salts, sulfur, carbon, phosphorus, metal powders and sulfides. A combination of finely divided aluminum with finely divided BARIUM BROMATE can explode by heat, percussion, or friction [Mellor 2:310 1946-47].
危険性
A poison. Moderate fire risk in contact with
organic materials.
健康ハザード
Toxic by ingestion. Inhalation of dust is toxic. Fire may produce irritating, corrosive and/or toxic gases. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control or dilution water may cause pollution.
火災危険
These substances will accelerate burning when involved in a fire. May explode from heat or contamination. Some may burn rapidly. 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.
安全性プロファイル
Very toxic. Fire hazard
by chemical reaction with easily oxidued
materials. Explodes at 300℃. Mmures with
sulfur are unstable storage hazards; igniting
immediately at 91 ℃ and after a 2-1 1 day
delay period at room temperature.
Incompatible with Al, As, C, Cu, metal
sulfides, organic matter, P, and reducing
materials. When heated to decomposition it
emits toxic fumes of Br-. See also BARIUM
COMPOUNDS (soluble) and BROMINE.
職業ばく露
This material is used as an analytical
reagent, oxidizer and corrosion inhibitor.
輸送方法
UN2719 Barium bromate, Hazard Class: 5.1;
Labels: 5.1—Oxidizer, 6.1—Poisonous materials.
不和合性
A strong oxidizer; keep away from
reducing agents. Keep away from oxidizable materials; aluminum,
arsenic, carbon, copper, metal sulfides; phosphorus,
sulfur, organic, and combustible materials (such as wood,
paper, oil, fuels), since violent reactions occur.
二臭素酸バリウム 上流と下流の製品情報
原材料
準備製品