Nomenclature
CAS number: 1314-28-9
Rhenic anhydride.
O
3Re; mol wt 234.21.
O 20.49%, Re 79.50%.
ReO
3.
Description and references
Prepd by reduction of Re2O7 with dioxane: Nechamkin, Hiskey, Inorg.
Synth. 3, 186 (1950); with CO: Melaven et al., ibid. 187.
Properties
Red cubic crystals; green luster by transmitted
light; the color of the powder may appear blue (rhenium blue). At 400° disproportionates in vacuo to Re2O7 and ReO2. bp 750°. d 6.9-7.4. Practically insol in water, alkalies, non-oxidizing
acids; oxidized by HNO3 to HReO4.