sym-Tetrabromoethane

Title: sym-Tetrabromoethane
CAS Registry Number: 79-27-6
CAS Name: 1,1,2,2-Tetrabromoethane
Additional Names: acetylene tetrabromide; Muthmann's liquid
Molecular Formula: C2H2Br4
Molecular Weight: 345.65
Percent Composition: C 6.95%, H 0.58%, Br 92.47%
Line Formula: Br2CHCHBr2
Literature References: Manuf by bromination of acetylene: GB 889649 (1962 to Associated Ethyl Co.). Toxicity studies: Gray, Arch. Ind. Hyg. Occup. Med. 2, 407 (1950); D. L. Wolff, Acta Biol. Med. Ger. 41, 945 (1982).
Properties: Yellowish, heavy, very refractive liquid; odor of camphor and iodoform. d 2.964; bp54 151°; mp 0°; nD20 1.638. Insol in water. Miscible with alc, chloroform, ether, aniline, glacial acetic acid. LD50 i.p. in mice: 443.3 mg/kg (Wolff).
Melting point: mp 0°
Boiling point: bp54 151°
Index of refraction: nD20 1.638
Density: d 2.964
Toxicity data: LD50 i.p. in mice: 443.3 mg/kg (Wolff)
CAUTION: Potential symptoms of overexposure are irritation of eyes and nose; anorexia, nausea; severe headaches; abdominal pain; jaundice; monocytosis; CNS depression. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 6.
Use: In microscopy, as solvent, separating minerals by density.
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