Strontium iodide

Hexagonal

• Strontium ( II) iodide
• Strontiumdiiodid

Colorless, crystalline solid

4.55 g · cm -3

507-645 ° C

1773 ° C ( decomposition)

• In water: 4550 g · l-1 (25 ° C)
• In ethanol: 31 g/l-1 (4 ° C)

Risk

800 mg · kg -1 ( LD50, rat, ip)

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Strontium iodide ( strontium ( II) iodide ), the iodide of the alkaline earth metal is strontium. The molecular formula is SRI2.

Representation

Strontium iodide can be represented by the reaction of strontium with hydrogen iodide.

Properties

It is a white, crystalline, readily water-soluble solid, which liquefies in a range of 507-645 ° C and decomposes at 1773 ° C. The compound is hygroscopic and turns in the air yellowish. At high temperatures and the presence of air, the compound decomposes completely strontium and elemental iodine.

There are various hydrates of Strontiumiodids. The hexahydrate SRI2 · 6 H2O are at 383 K in a nitrogen stream from four molecules of crystal water and goes into the dihydrate SRI2 · 2 H2O over.

Use

Strontium iodide has been used for some time for scintillator crystals. The properties of such strontium iodide scintillators is desirable for medical purposes and for safety-related applications in order to identify and can distinguish isotopes.