硫酸イットリウム八水和物

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Warning

• 危険有害性情報

  H315：皮膚刺激

  H319：強い眼刺激

  H335：呼吸器への刺激のおそれ

• 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。

  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。

  P305+P351+P338：眼に入った場合：水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。

  P405：施錠して保管すること。

硫酸イットリウム八水和物 価格

硫酸イットリウム八水和物 化学特性,用途語,生産方法

• 説明

  Yttrium(III) sulfate octahydrate, with the chemical formula Y2(SO4)3-8H2O, consists of infinite layers parallel to (10\overline 1), with [Y(H2O)4(SO4)3/2] being the only repeating unit. The layers are connected to each other using only moderately strong hydrogen bonds. The trivalent yttrium cation is coordinated by eight O-atoms from four sulfate groups and four water molecules in a distorted square antitetrahedron [YO8]. It is of the same structural type as the rare earth sulfate octahydrate^[1].
  
  Figure 1. View perpendicular to the (10 1) layer of the title compound, with [Y(H 2 O) 4/1 (SO 4 (1)) 3/3 (SO 4 (2)) 1/2 ] as the repeat unit. Key: [SO 4 ] tetrahedra (yellow), [YO 8 ] antiprisms (red), oxygen (blue) and hydrogen (light grey) atoms.

• 化学的特性

  Small, reddish-white, monosymmetric crystals. D 2.558, loses 8H2O at 120C, decomposes 700C. Soluble in concentrated sulfuric acid; sparingly soluble in water; insoluble in alkalies.

• 物理的性質

  Red monoclinic crystals; density 2.59 g/cm³; loses all its water molecules at 120°C; decomposes at 700°C; sparingly soluble in water, less soluble in hot water; dissolves in concentrated sulfuric acid forming Y(HSO4)3; insoluble in alkalis; forms double salts with alkali sulfates.

• 使用

  Yttrium sulfate is used in making many yttrium salts.

• 製造方法

  Yttrium sulfate is produced as an intermediate in recovering yttrium from monazite or xenotime (see Yttrium, Recovery). Rare earth sulfates are separated on a cation exchange resin bed. Yttrium fraction is purified by fractional crystallization. Alternatively, yttrium sulfate may be prepared by reacting yttrium oxide with sulfuric acid.

硫酸イットリウム八水和物 生産企業

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