Bismuth iodide has a unique crystal structure, and iodine ions occupyHexagonal densest accumulationAnd bismuth ions account for one third of the totaloctahedral void 。Since bismuth iodide is insoluble in water, bismuth iodide can be prepared by precipitation of soluble bismuth salt with appropriate amount of potassium iodide.
essential information
Announce
edit
Chinese name: bismuth iodide
Chinese alias: bismuth iodide (III)
English alias: Bismuthine, triiodo -;
Bismuth triiodide; NSC 103681;[1]
Triiodobismuth; Bismuth iodide;
Bismuth iodide (VAN); triiodobismuthane;
bismuth(+3) trihydride cation triiodide
CAS:7787-64-6;12262-07-6
EINECS:232-127-4
Properties: grayish black crystal with metallic flash.
The relative density is 5.778.
Melting point 408 ℃.
Boiling point 500 ℃.
Other information
Announce
edit
Insoluble in cold water, slowly decomposing in hot water,
Soluble in alcohol, hydrochloric acid, hydroiodic acid and potassium iodide aqueous solution.
Long term exposure to air will slowly change into bismuth iodate [Bi (IOthree)three]。
It is obtained by direct interaction of bismuth and iodine.
Purpose: used asAnalytical reagentIt is also used for the inspection of alkaloids or other alkaloids.
