ГЕКСАФТОРСИЛИКАТ КАЛИЯ химические свойства, назначение, производство
Химические свойства
White, odorless, crystalline powder. D
3.0. Slightly soluble in water; soluble in hydrochlo-
ric acid.
Использование
In the manufacture of opalescent glass, in porcelain enamels, in insecticides. Also used in aluminum metallurgy.
Общее описание
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.
Реакции воздуха и воды
Slightly soluble in water.
Профиль реактивности
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.
Опасность
Toxic by ingestion and inhalation, strong
irritant to tissue.
Угроза здоровью
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.
Пожароопасность
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.
Промышленное использование
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.
Профиль безопасности
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.
Методы очистки
Crystallise it several times from conductivity water (100mL/g) between 100o and 0o.
ГЕКСАФТОРСИЛИКАТ КАЛИЯ препаратная продукция и сырье
сырьё
препарат