Title: Calcium Iodide
CAS Registry Number: 10102-68-8
Molecular Formula: CaI2
Molecular Weight: 293.89
Percent Composition: Ca 13.64%, I 86.36%
Literature References: Prepn: Farr, US 2415346 (1947 to Mallinckrodt); Chaigneau, Bull. Soc. Chim. Fr. 1957, 886; Gmelins, Calcium (8th ed.) 28B, 102, 610-622 (1958). The commercial product usually contains 16-20% water.
Properties: Very hygroscopic hexagonal lamella. Becomes yellow and completely insol on exposure to air due to liberation of I2 and absorption of CO2. mp 740°; bp 1100°. Very sol in water, methanol, ethanol, acetone; practically insol in ether, dioxane. The aq soln is neutral or slightly alkaline. Keep tightly closed and protected from light.
Melting point: mp 740°
Boiling point: bp 1100°
Derivative Type: Hexahydrate
Properties: Hexagonal, thick needles, or plates, or lumps, or powder. Very hygroscopic; becomes yellow in air, mp ~42°. Freely sol in water, alcohol. Keep tightly closed and protected from light.
Melting point: mp ~42°
Therap-Cat: Expectorant.
Keywords: Expectorant. |