フルオロケイ酸アンモニウム

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 注意書き

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

フルオロケイ酸アンモニウム 価格

MSDS Information

• Ammonium hexafluorosilicate

フルオロケイ酸アンモニウム 化学特性,用途語,生産方法

• 化学的特性

  Ammonium hexafluorosilicate is a white crystalline powder. Odorless.

• 物理的性質

  d 2.01 g cm?3; decomposes prior to melting; odorless.

• 使用

  Ammonium hexafluorosilicate is used as a disinfectant and analytical reagent. It finds application in etching glass, metal casting, and electroplating. It is also employed as a wood preservative agent and mothproofing agent in textiles. It plays a useful application in soldering flux. It is also used to arrest caries treatment without discoloration on demineralized primary tooth enamel.

• 製造方法

  By reacting crude quartz with ammonium fluoride or ammonium hydrodifluoride or a mixture thereof in an aqueous medium when heated from 50 ° to 110 ° C. to form ammonium hexafluorosilicate, separating it from unreacted quartz and insoluble impurities by known methods (filtration or centrifugation) and subsequent concentration and cooling of the mother liquor for crystallization of Ammonium hexafluorosilicate.

• 一般的な説明

  A white crystalline solid. Noncombustible. Corrodes aluminum. Used as a disinfectant, in etching glass, metal casting, and electroplating.

• 空気と水の反応

  Water soluble.

• 反応プロフィール

  Salts, basic, such as Ammonium hexafluorosilicate, are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.

• 危険性

  Very toxic; fatal.

• 健康ハザード

  Inhalation of dust can cause pulmonary irritation and can be fatal in some cases. Ingestion may be fatal. Contact with dust causes irritation of eyes and irritation or ulceration of skin.

• 火災危険

  Special Hazards of Combustion Products: Toxic and irritating hydrogen fluoride, silicon tetrafluoride, and oxides of nitrogen may form in fires.

• 職業ばく露

  This material is used as a pesticide and miticide, wood preservative, soldering flux; light metal casting; and in the etching of glass.

• 輸送方法

  UN2856 Fluorosilicates, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

• 純化方法

  Crystallise the salt from water (2mL/g). After 3 recrystallisations, the Technical grade salt has Li, Na, K and Fe at 0.3, 0.2, 0.1 and 1.0 ppm respectively.

• 不和合性

  Aqueous solution is highly corrosive. Contact with acids reacts to form hydrogen fluoride, which is a highly corrosive and forms a toxic gas. Corrosive to aluminum. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Ammonium fluorosilicate reacts with water to form hydrofluoric acid, a source of fluoride ions. Unlike other halide ions, the fluoride ion is highly reactive, acting as a weak base and participating in some unique reactions. In particular, fluorides react strongly with compounds containing calcium, magnesium, or silicon ions, which means that solutions containing soluble fluorides are corrosive to both living tissue and glass. Hydrofluoric acid can cause severe chemical burns and is one of the few materials that can etch glass. It is also a toxic gas in its anhydrous form.

• 廃棄物の処理

  Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal. Incineration.

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