Cadmium bromide

• Cadmium (II ) bromide
• Cadmiumdibromid

• 7789-42-6
• 13464-92-1 (tetrahydrate )

Colorless, hexagonal, shed pearlescing

Fixed

5.196 g · cm -3

569 ° C

863 ° C

• 950 g · l -1 in water (18 ° C)
• 264 g · l-1 in ethanol ( 15 ° C)

Attention

322 mg · kg -1 ( LD50, rat, oral)

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Cadmium bromide, CdBr2, is a chemical compound of cadmium with bromine.

Production and representation

Displaying cadmium bromide succeed from the elements at elevated temperatures.

Furthermore, it can also be represented by dissolving cadmium in hydrobromic acid, followed by crystallization.

Properties

Cadmium bromide is available as colorless, hexagonal, pearlescing shed and is very hygroscopic. It has a crystal structure of cadmium chloride type (a = 398.5, c = 1884 pm ). From a solution of cadmium bromide crystallizes in water above 36 ° C the monohydrate, below this temperature the tetrahydrate from.

Use

Cadmium bromide is used as starting material for the preparation of cadmium -tungsten bromide complex compounds. Earlier it was also for the production of silver bromide - gelatin for photographic images used.