Title: Tetraiodoethylene
CAS Registry Number: 513-92-8
CAS Name: Tetraiodoethene
Additional Names: diiodoform; ethylene periodide; ethylene tetraiodide
Molecular Formula: C2I4
Molecular Weight: 531.64
Percent Composition: C 4.52%, I 95.48%
Line Formula: I2C=CI2
Literature References: Prepd by the action of iodine on diodoacetylene obtained from calcium carbide and iodine. Crystal and molecular structure: B. C. Haywood, R. Shirley, Acta Crystallogr. B33, 1765 (1977).
Properties: Light yellow, heavy, small, practically odorless crystals; characteristic odor. On exposure to light turns brown. d 2.98. mp 187°. Insol in water; sol in benzene, chloroform, toluene, CS2, slightly in ether. Protect from light.
Melting point: mp 187°
Density: d 2.98

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