メタけい酸バリウム

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 危険有害性情報

  H302：飲み込むと有害

  H332：吸入すると有害

• 注意書き

  P261：粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。

  P264：取扱い後は皮膚をよく洗うこと。

  P264：取扱い後は手や顔をよく洗うこと。

  P270：この製品を使用する時に、飲食または喫煙をしないこ 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。

メタけい酸バリウム 化学特性,用途語,生産方法

• 説明

  BaSiO3 is orthorhombic with unit-cell dimensions of a = 5.6182(5)?, b = 12.445(1), c = 4.5816 ?. It is dimorphic with α-BaSiO3 stable below about 990°C but forms β-BaSiO3 above 1000°C. A 1:1 mol ratio of BaO–SiO2 fired at 850°C and 1050°C serves to form the two dimorphs.
  The enthalpy of solution of BaSiO3 in (3.15 mol/dm3 HF + 8.13 mol/dm³ HCl) has been measured. From the results, the standard molar enthalpy of formation of BaSiO3 (s) was calculated. The value obtained was -1606.4±2.6 kJ/mol.

• 化学的特性

  Colorless powder. Insoluble in water; soluble in acids.

• 使用

  Barium silicate films that are suitable for use as transmission media in integrated optical circuits. It is shown that the films, which can be produced with a wide range of refractive indices by suitable selection of the ratio of the target constituents, exhibit low optical attenuation. Hence it is used for integrated optical circuits. It is used in ceramics.

• 製造方法

  Bariumsilicate can be prepared by calcining the oxide with silica, SiO2, at an elevated temperature: BaO + SiO2 + hea?BaSiO3

メタけい酸バリウム 生産企業

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