Title: sym-Dichloromethyl Ether
CAS Registry Number: 542-88-1
CAS Name: Oxybis[chloromethane]
Additional Names: bis(chloromethyl) ether; BCME
Molecular Formula: C2H4Cl2O
Molecular Weight: 114.96
Percent Composition: C 20.90%, H 3.51%, Cl 61.68%, O 13.92%
Line Formula: (CH2Cl)2O
Literature References: Review of carcinogenic risk: IARC Monographs 4, 231-238 (1974); of toxicology and human exposure: Toxicological Profile for Bis (Chloromethyl) Ether (PB90-168691, 1989) 77 pp.
Properties: Colorless liquid; suffocating odor. d420 1.315. bp 106°. nD20 1.4346. Unstable in moist air; dec by water into HCl and formaldehyde.
Boiling point: bp 106°
Index of refraction: nD20 1.4346
Density: d420 1.315
CAUTION: Potential symptoms of overexposure are irritation of eyes, skin, mucous membranes and respiratory system; pulmonary congestion, edema; corneal damage, necrosis; decreased pulmonary function, coughing, dyspnea and wheezing; blood stained sputum, bronchial secretions. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 64. This substance is listed as a known human carcinogen: Report on Carcinogens, Eleventh Edition (PB2005-104914, 2004) p III-56.
Use: Manuf of plastics and ion exchange resins.