Praseodymium(III) chloride

Hexagonal

Praseodymtrichlorid

Green - blue odorless solid

Fixed

• 4.02 g · cm -3
• 2.25 g · cm -3 ( heptahydrate )

786 ° C

1710 ° C

Soluble in water

Attention

1318 mg · kg -1 ( LD50, rat, ip)

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Praseodymium (III ) chloride is a chemical compound selected from the group of chlorides.

Production and representation

Praseodymium (III ) chloride can be obtained by reaction of hydrogen chloride with praseodymium.

The hydrates may be obtained by reaction of praseodymium or praseodymium (III ) carbonate with hydrochloric acid.

The anhydrous form may be obtained by thermal dehydration at 400 ° C in the presence of ammonium chloride. As an alternative, thionyl chloride can be used.

Properties

Praseodymium (III ) chloride is a hygroscopic green - blue solid, heptahydrate green solid. The anhydrate converts quickly to air in the heptahydrate to. It is located in a hexagonal crystal system with space group P63 before / m. His heptahydrate has a triclinic crystal structure with space group P1.

Use

Praseodymium (III ) chloride is used as a laboratory chemical and for the preparation of other chemical compounds.