アルミン酸ナトリウム

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H290：金属腐食のおそれ

  H314：重篤な皮膚の薬傷?眼の損傷

• 注意書き

  P234：他の容器に移し替えないこと。

  P260：粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

  P301+P330+P331：飲み込んだ場合：口をすすぐこと。無理に吐かせ ないこと。

  P303+P361+P353：皮膚（または髪）に付着した場合：直ちに汚染された衣 類をすべて脱ぐこと/取り除くこと。皮膚を流水/シャワー で洗うこと。

  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。

アルミン酸ナトリウム 価格

アルミン酸ナトリウム 化学特性,用途語,生産方法

• 解説

  アルミン酸ナトリウム化学式NaAlO2。酸化アルミニウムとシュウ酸ナトリウムの混合物を1000℃に加熱して得られる。また酸化アルミニウムと酸化ナトリウムの混合物を加熱しても得られる。これはイオン結晶性の混合酸化物であって，アルミン酸イオンAlO2－が結晶中に存在するわけではない。したがって，酸化アルミニウムナトリウムaluminium sodium oxideと呼ぶほうが適切である。融点は1700℃以上。水に溶けやすいが，水溶液は加水分解して水酸化物を沈殿する。

• 用途

  土壌硬化剤、水処理

• 化学的特性

  Sodium aluminate is a white crystalline solid or solution.

• 使用

  Sodium aluminate is used in the treatment of industrial and municipal water supplies. It is also an effective precipitant for soluble phosphate in sewage and is especially useful in wastewater having low alkalinity.
  Large quantities of sodium aluminate are used in papermaking where it improves sizing, filler retention,and pitch deposition.The addition of sodium aluminate to titanium dioxide paint pigment improves the nonchalking performance of outdoor paints.
  Sodium aluminate is widely used in the preparation of alumina-based catalysts. Aluminosilicate can be prepared by impregnating silica gel with alumina obtained from sodium aluminate and aluminum sulfate. Reaction of sodium aluminate with silica or silicates has produced porous crystalline aluminosilicates which are useful as adsorbents and catalyst support materials, ie, molecular sieves.

• 定義

  sodium aluminate: white solid, NaAlO₂ or Na₂Al₂O₄, which is insolublein ethanol and soluble in water giving strongly alkaline solutions;m.p. 1800°C. It is manufactured by heating bauxite with sodium carbonate and extracting the residue with water, or it may be prepared in the laboratory by adding excess aluminium to hot concentrated sodium hydroxide. In solutionthe ion Al(OH)₄^- predominates.Sodium aluminate is used as amordant, in the production of zeolites,in effluent treatment, in glass manufacture, and in cleansing compounds.

• 製造方法

  Small amounts of sodium aluminate are prepared in the lab by fusion of equimolar quantities of sodium carbonate and aluminum acetate, Al(C2H3O2)3, at 800°C. Other methods involve reaction of sodium hydroxide with amorphous alumina or aluminum metal.Commercial quantities of sodium aluminate are made from hydrated alumina, in the form of aluminum hydroxy oxide, AlO(OH), or aluminum hydroxide, Al(OH)3, a product of the Bayer process which is used to refine bauxite, the principal aluminum ore.
  Commercial grades of sodium aluminate are obtained by digestion of aluminum trihydroxide in aqueous caustic at atmospheric pressure and near the boiling temperature.

• 反応性

  Sodium aluminate, NaAlO2, white solid, (1) by reaction of aluminum hydroxide and NaOH solution, (2) by fusion of aluminum oxide and sodium carbonate, the solution reacts with CO2 to form aluminum hydroxide.

• 一般的な説明

  Water solution of the white crystalline powder. Corrosive to metals and tissue.

• 空気と水の反応

  Sodium aluminate will dissolve in water and produce a strong corrosive alkaline solution. May generate heat when water is added.

• 反応プロフィール

  SODIUM ALUMINATE generates a strong base in water; reacts violently with acids and corrosive to metals. Not compatible with copper, tin, zinc, aluminum, acids, phosphorus, or chlorocarbons.

• 危険性

  (Solution) Strong irritant to tissue.

• 健康ハザード

  Material is caustic. Irritates skin, eyes, and gastrointestinal tract, causing redness of skin and eyes, burning sensation of mucous membranes.

• 火災危険

  Behavior in Fire: Containers may burst when exposed to heat.

• 安全性プロファイル

  Moderate irritant to skin, eyes, and mucous membranes. A corrosive substance. When heated to decomposition it emits toxic fumes of NazO.

• 職業ばく露

  Used in water and waste treatment; papermaking industry; in printing on fabrics; in the manufacture of pigments, milk glass, and soap; hardening building stone; sizing paper; as a water softener.

• 輸送方法

  UN2812 Sodium aluminate, solid, Hazard class: 8; Labels: 8-Corrosive material. UN1819 Sodium aluminate, solution, Hazard class: 8; Labels: 8-Corrosive material.

• 不和合性

  The aqueous solution is a strong base. Reacts violently with acid. Incompatible with organic anhydrides; isocyanates, alkylene oxides; epichlorohydrin, aldehydes, alcohols, glycols, caprolactum, chlorocarbons. Corrosive to metals; attacks copper, tin, aluminum, and zinc.

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