五酸化二ヒ素

五酸化二ヒ素 物理性質

融点 : 315 °C 比重(密度) : 4,32 g/cm3 貯蔵温度 : Poison room Sensitive : Hygroscopic Merck : 14,798 CAS データベース: 1303-28-2(CAS DataBase Reference)

安全性情報

主な危険性 : T,N,T+ Rフレーズ : 23/25-45-50/53-28-23 Sフレーズ : 45-53-61-60-36/37-28 RIDADR : 1559 RTECS 番号: CG2275000 国連危険物分類 : 6.1 容器等級 : II

五酸化二ヒ素 化学特性,用途語,生産方法

化学的特性 white to off-white powder and chunks 一般的な説明 A white crystalline solid. Noncombustible. Corrosive to metals in the presence of moisture. Toxic by ingestion. 空気と水の反応 Dissolves in water to give solutions of arsenic acid. 反応プロフィール ARSENIC PENTOXIDE is an oxidizing acid. Oxidizing acids are generally soluble in water with the release of hydrogen ions. The resulting solutions have pH's of less than 7.0. Materials in this group react with chemical bases (for example: amines and inorganic hydroxides) to form salts. These neutralization reactions occur as the base accepts hydrogen ions that the acid donates. Neutralizations can generate dangerously large amounts of heat in small spaces. The dissolution of acids in water or the dilution of their concentrated solutions with water may generate significant heat. The addition of water acids often generates sufficient heat in the small region of mixing to boil some of the water explosively. The resulting "bumping" spatters acid widely. These materials have significant ability as oxidizing agents. but that ability varies (for example, from high for nitric acid to low for sulfuric acid and most sulfonic acids). They can react with active metals, including iron and aluminum, and also many less active metals, to dissolve the metal and liberate hydrogen and/or toxic gases. Like other acids, materials in this group can initiate polymerization in certain classes of organic compounds. Their reactions with cyanide salts and compounds release gaseous hydrogen cyanide. Flammable and/or toxic gases are also often generated by their reactions with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and weak or strong reducing agents. Additional gas-generating reactions occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and even carbonates: the carbon dioxide gas from the last is nontoxic but the heat and spattering from the reaction can be troublesome. Acids often catalyze (increase the rate of) chemical reactions. 健康ハザード ARSENIC PENTOXIDE is extremely toxic; the probable oral lethal dose for humans is 5-50 mg/kg, or between 7 drops and 1 teaspoonful for a 150-lb. person. It is irritating to eyes, nose, and throat. Chronic exposure may cause nerve damage to the extremities, alter cellular composition of the blood, and cause structural changes in blood components. There is sufficient evidence that inorganic arsenic compounds are skin and lung carcinogens in humans. 火災危険 Fire may produce irritating or poisonous gases. Reacts with metal and may give off toxic arsine gas. Hazardous polymerization may not occur.

五酸化二ヒ素 上流と下流の製品情報

原材料 亜ひ酸

準備製品 8-ニトロキノリン

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