Isopropyl Ether
Title: Isopropyl Ether
CAS Registry Number: 108-20-3
CAS Name: 2,2¢-Oxybispropane
Additional Names: 2-isopropoxypropane; diisopropyl ether; DIPE
Molecular Formula: C6H14O
Molecular Weight: 102.17
Percent Composition: C 70.53%, H 13.81%, O 15.66%
Line Formula: (CH3)2CHOCH(CH3)2
Literature References: Prepn: E. Erlenmeyer, Ann. 126, 305 (1863). Physical properties and solubility: H. R. Fife, E. W. Reid, Ind. Eng. Chem. 22, 513 (1930). Manuf process: M. N. Harandi, H. Owen, US 5208387 (1993 to Mobil). GC determn in gasolines: N. G. Johansen, J. High Resolut. Chromatogr. Chromatogr. Commun. 7, 487 (1984). Acute toxicity: E. T. Kimura et al., Toxicol. Appl. Pharmacol. 19, 699 (1971). Comparison with MTBE, ETBE and TAME, q.q.v., as gasoline oxygenate: M. J. McNally et al., Oil Gas J. 90, 39 (May 25, 1992).
Properties: Liquid. bp760 68.27°. fp -85.89°. d420 0.72813. nD20 1.36888. Surface tension in air (23°): 32 dynes/cm. Viscosity (25°): 0.379 cP. Vapor pressure (20°): 158 mm Hg. Specific heat (22-27°): 0.526 cal/g. Flash pt, closed cup: -6.7°F. Latent heat of vaporization (67.5°): 68.2 cal/g. Soly of commercial grade in water (19°): 1.71 wt%. Misc with most organic solvents. Ethanolamines, glycols, glycerol and their monoesters have limited soly; diesters are sol. Readily forms peroxides when exposed to oxygen unless stabilized with inhibitors such as hydroquinone or BHT. LD50 in 14 day old, young adult, adult rats (ml/kg): 6.4, 16.5, 16.0 orally (Kimura).
Boiling point: bp760 68.27°
Flash point: Flash pt, closed cup: -6.7°F
Index of refraction: nD20 1.36888
Density: d420 0.72813
Toxicity data: LD50 in 14 day old, young adult, adult rats (ml/kg): 6.4, 16.5, 16.0 orally (Kimura)
CAUTION: Potential symptoms of overexposure are irritation of eyes, skin and nose; respiratory discomfort; dermatitis. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 182.
Use: As solvent; fuel additive.

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