ケイフッ化カリウム 化学特性,用途語,生産方法
外観
白色～ほとんど白色, 粉末
溶解性
水に難溶 (0.16g/100ml, 20℃)。水にわずかに溶け、エタノールにほとんど溶けない。
用途
光学用レンズ、農薬
化学的特性
White, odorless, crystalline powder. D
3.0. Slightly soluble in water; soluble in hydrochlo-
ric acid.
使用
In the manufacture of opalescent glass, in porcelain enamels, in insecticides. Also used in aluminum metallurgy.
一般的な説明
A white, odorless crystalline powder. Denser than water. Contact may cause irritation to skin, eyes, and mucous membranes. May be toxic by ingestion. Used to make other chemicals.
空気と水の反応
Slightly soluble in water.
反応プロフィール
Potassium fluorosilicate has weak oxidizing or reducing powers. Redox reactions can however still occur. The majority of compounds in this class are slightly soluble or insoluble in water. If soluble in water, then the solutions are usually neither strongly acidic nor strongly basic. These compounds are not water-reactive.
危険性
Toxic by ingestion and inhalation, strong
irritant to tissue.
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.
工業用途
Potassium fluorosilicate is a white to yellowish powder, poorly soluble in water (0.68%
at 20 °C). Because of its poor solubility, it is not commonly used as a modifying reagent.
安全性プロファイル
A poison by ingestion
and subcutaneous routes. Ingestion can
cause vomiting and dtarrhea. A strong
irritant. Incompatible with hydrofluoric acid.
When heated to decomposition it emits
toxic fumes of SiF4, K3SiF7, and KF.
純化方法
Crystallise it several times from conductivity water (100mL/g) between 100o and 0o.
ケイフッ化カリウム 上流と下流の製品情報
原材料
準備製品