Propylene Dichloride
Title: Propylene Dichloride
CAS Registry Number: 78-87-5
CAS Name: 1,2-Dichloropropane
Molecular Formula: C3H6Cl2
Molecular Weight: 112.99
Percent Composition: C 31.89%, H 5.35%, Cl 62.75%
Line Formula: CH3CHClCH2Cl
Literature References: Prepd from propyl chloride and Sb2Cl5. Toxicity data: H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969). Review of toxicology and human exposure: Toxicological Profile for 1,2-Dichloropropane (PB90-182122, 1989) 131 pp.
Properties: Flammable, mobile liq. Odor of chloroform. d2525 1.159; bp 95-96°. Solidifies below -70°. nD20 1.4388. Flash point (ASTM open cup) 21°C (70°F). Despite the low flash pt it does not catch fire readily in industrial applications. Fire pt 38°. Slightly sol in water; miscible with organic solvents. LD50 orally in rats: 1.19 ml/kg (Smyth).
Boiling point: bp 95-96°
Flash point: Flash point (ASTM open cup) 21°C (70°F)
Index of refraction: nD20 1.4388
Density: d2525 1.159
Toxicity data: LD50 orally in rats: 1.19 ml/kg (Smyth)
CAUTION: Potential symptoms of overexposure are eye, skin and respiratory system irritation; drowsiness, lightheadedness; liver and kidney damage. Potential occupational carcinogen. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 268.
Use: Solvent for oils, fats, resins, waxes, rubber; in ion exchange manuf; in photographic film prodn; paper coating; petroleum catalyst regeneration. Has been used as a soil fumigant.

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