Lead(II) chloride

• Lead dichloride
• Sal

White solid

Fixed

5.85 g · cm -3

500 ° C

950 ° C

10.8 g · L-1 (20 ° C)

Risk

-359 KJ · mol -1

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Lead (II ) chloride ( PbCl2 ), the lead (II ) salt of hydrochloric acid. It crystallizes in white, rhombic needles or prisms.

Occurrence

In nature, lead (II ) chloride is present as mineral Cotunnit.

Production and representation

Lead (II ) chloride can be represented (II ) oxide with chlorine or hydrochloric acid by reacting lead or lead.

Since lead (II ) chloride is sparingly soluble in water, it precipitates from lead-containing aqueous solutions. This is exploited in the hydrochloric acid group of the cation separation Ganges to separate lead from other ions.

It is worth noting that lead (II ) chloride significantly better than in the cold in the heat is soluble. Allowed to cool a saturated hot solution, so falls during cooling, the lead (II ) chloride in the form of beautifully trained needles.

Properties

Lead (II ) chloride is crystallized such as lead (II ) fluoride and lead ( II) bromide in the uranium ( III) chloride structurally related PbCl2 spatial structure. Here, each lead atom is coordinated by nine chloride atoms. These form a coordination polyhedron distorted triple capped trigonal prisms that are joined together by joint surfaces.

While lead (II ) chloride is only very slightly soluble in cold dilute hydrochloric acid, it dissolves readily in concentrated hydrochloric acid to form Chloroplumbaten. Soluble it is also in ammonium chloride and nitrate solutions, since this form soluble double salts.

Use

Lead (II ) chloride is used for the production of lead chromate and used as feed. Earlier it was also for the production of several pigments used Pattinson's white lead ( Bleihydroxidchlorid ) and Verona Yellow ( lead oxychloride ).