Title: 1,5-Pentanediol
CAS Registry Number: 111-29-5
Additional Names: Pentamethylene glycol; 1,5-dihydroxypentane
Molecular Formula: C5H12O2
Molecular Weight: 104.15
Percent Composition: C 57.66%, H 11.61%, O 30.72%
Line Formula: HOCH2(CH2)3CH2OH
Literature References: Prepd by hydrogenolysis of tetrahydrofurfuryl alcohol in the presence of copper chromite: Connor, Adkins, J. Am. Chem. Soc. 54, 4678 (1932); D. Kaufman, W. Reeve, Org. Synth. coll. vol. III, 693 (1955). Toxicity study: H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 23, 95 (1962).
Properties: Viscous, oily liquid. Bitter taste. d20 0.9941. mp -18°. bp760 239°, bp3.0 120°. nD20 1.4499. Flash pt 125°C (275°F). Miscible with water, methanol, alc, acetone, ethyl acetate. Soly in ether (25°): 11% w/w. Limited soly in benzene, trichloroethylene, methylene chloride, petr ether, heptane. LD50 orally in rats: 5.89 g/kg (Smyth).
Melting point: mp -18°
Boiling point: bp760 239°; bp3.0 120°
Flash point: Flash pt 125°C (275°F)
Index of refraction: nD20 1.4499
Density: d20 0.9941
Toxicity data: LD50 orally in rats: 5.89 g/kg (Smyth)
Use: As plasticizer in cellulose products and adhesives, in brake fluid compositions. Forms esters and polyesters which can be used as plasticizers, emulsifying agents and resin intermediates. |