セレン酸バリウム

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 危険有害性情報

  H301：飲み込むと有毒

  H331：吸入すると有毒

  H373：長期にわたる、または反復暴露により臓器の障 害のおそれ

  H400：水生生物に強い毒性

  H410：長期的影響により水生生物に非常に強い毒性

• 注意書き

  P260：粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。

  P304+P340：吸入した場合：空気の新鮮な場所に移し、呼吸しやすい 姿勢で休息させること。

  P405：施錠して保管すること。

セレン酸バリウム 価格

セレン酸バリウム 化学特性,用途語,生産方法

• 外観

  白色の粉末

• 溶解性

  水及びエタノールにほとんど溶けない。

• 説明

  Barium selanate has the molecular formula of BaSeO4 and the molecular weight of 280.2748 g/mol. It can be prepared by reacting sodium selenate with barium chloride in solution:
  BaCl2(aq)+ Na2SeO4(aq) ? BaSeO4+ 2NaCl(aq)
  Barium selenate is slightly soluble in water at 0.0052 g/100 ml at 20°C. Its CAS number is 7787-41-9. It is a white rhombic crystal which decomposes when heated beyond about 425°C. It is slightly soluble in water at 0.0152 g/100 ml at 20°C. Its solubility product is 3.40×10^-8.
  The heat of formation of barium selenate is: △H₂₉₈ BaSeO4 = -249.0 kcal/mol (-1041.8 kJ/mol). As a result of the measurements, it has been found that for the reaction:
  Basolid+ Sesolid+ 2O2 = BaSeO4
  △H₂₉₈ = -279.2 cal/mol
  △F₂₉₈ = -249.1 cal/mol

• 化学的特性

  orthorhombic crystal(s); preparation: heating BaCO3 and Se [MER06]

• 反応プロフィール

  Inorganic oxidizing agents can react with reducing agents to generate heat and products that may be gaseous (causing pressurization of closed containers). The products may themselves be capable of further reactions (such as combustion in the air). The chemical reduction of materials in this group can be rapid or even explosive, but often requires initiation (heat, spark, catalyst, addition of a solvent). Explosive mixtures of inorganic oxidizing agents with reducing agents often persist unchanged for long periods if initiation is prevented. Such systems are typically mixtures of solids, but may involve any combination of physical states. Some inorganic oxidizing agents are salts of metals that are soluble in water; dissolution dilutes but does not nullify the oxidizing power of such materials. Organic compounds in general have some reducing power and can in principle react with compounds in this class. Actual reactivity varies greatly with the identity of the organic compound. Inorganic oxidizing agents can react violently with active metals, cyanides, esters, and thiocyanates. Explosives often consist of an inorganic oxidizing agent mixed in intimate contact with a reducing agent. Gunpowder is such a mixture. Other examples are a mixture of sugar (an organic compound) plus sodium chlorate and magnesium (an inorganic reducing agent) plus barium peroxide.

• 健康ハザード

  Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

• 火災危険

  Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.

セレン酸バリウム 上流と下流の製品情報

セレン酸バリウム 生産企業

Global(28)Suppliers

7787-41-9, セレン酸バリウム キーワード