Atomistry » Praseodymium » Chemical properties » Praseodymium chloride
Atomistry »
  Praseodymium »
    Chemical properties »
      Praseodymium chloride »

Praseodymium chloride, PrCl3

Praseodymium chloride, PrCl3, is a green, hygroscopic solid which fuses to a green liquid. The density is 4.020 at 25° C. (Baxter and Stewart).

From aqueous solution the heptahydrate, PrCl3.7H2O, separates in large, green crystals of density 2.25 at 15° (Scheele). The crystals melt at 111° C. (Baxter and Stewart). When dried over sulphuric acid, the heptahydrate rapidly passes into the hexahydrate, PrCl3.6H2O, which is slowly dehydrated to the trihydrate, PrCl3.3H2O. The monohydrate is also known. At 13.8°, 100 parts of water dissolve 103.9 parts of anhydrous chloride or 334.2 of the heptahydrate, the solution being in equilibrium with the heptahydrate (Matignon). The concentrated aqueous solution dissolves considerable quantities of rare earth oxalates.

Praseodymium aurichloride, PrCl3.AuCl3.10H2O, forms yellow crystals of specific gravity 2.60 and is readily soluble in water. The chloroplatinate, PrCl3.PtCl4.12H2O, is also a yellow crystalline salt, of density 2.41 at 16°.

Last articles

Xe in 6AYK
Xe in 6QII
Xe in 6ASM
Xe in 5NSW
Xe in 6FY9
Xe in 5O1K
Xe in 5O27
Xe in 5M69
Xe in 5KPU
Xe in 5I63
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy