Lead(II) fluoride

Orthorhombic

Bleidifluorid

Colorless odorless solid

Fixed

• 8.24 g · cm -3
• 7.75 g · cm -3 ( β - form)

855 ° C

1290 ° C

0.671 g • L-1 (20 ° C)

1,767

.

Risk

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3030 mg · kg -1 ( LD50, rat, oral)

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Lead (II ) fluoride is a chemical compound of the lead from the group of fluorides.

Representation

Lead (II ) fluoride can be prepared by various methods, as by the treatment of lead (II ) hydroxide and lead (II) salt (for example, lead (II) carbonate) with hydrogen fluoride:

And the reaction of potassium fluoride with a lead (II ) nitrate solution is possible.

Properties

Lead (II ) fluoride is a colorless, odorless, non-flammable solid, which is very slightly soluble in water. In the presence of nitric acid or nitrate, the solubility is greater. The compound occurs in two different crystal forms. The orthorhombic α - form ( lead chloride type) transforms above 316 ° C in the cubic β - form ( Flussspattyp ) around.

Use

Lead (II ) fluoride is used in the low-melting glasses, glass coatings for the infrared and as a catalyst for the production of picoline.