Diisopropanolamine
Title: Diisopropanolamine
CAS Registry Number: 110-97-4
CAS Name: 1,1¢-Iminobis-2-propanol
Additional Names: bis(2-hydroxypropyl)amine; DIPA
Molecular Formula: C6H15NO2
Molecular Weight: 133.19
Percent Composition: C 54.11%, H 11.35%, N 10.52%, O 24.02%
Literature References: Secondary alkanolamine. Prepn: J. N. Wickert, US 1988225 (1935 to Carbide & Carbon Chem.). Densities, viscosities, diffusivities: H. Hikita et al., J. Chem. Eng. Jpn. 14, 411 (1981). Absorption and mass transfer study: P. M. M. Blauwhoff, W. P. M. Van Swaaij, ACS Symp. Ser. 196, 377 (1982). Safety assessment and use: K. H. Beyer et al., J. Am. Coll. Toxicol. 6, 53 (1987). Review of use in 'Sulfinol' process: K. E. Zarker, Fert. Sci. Technol. Ser. 2, 219-232 (1974); in gas purification: K. F. Butwell et al., Hydrocarbon Process. Int. Ed. 61, 109-116 (1982).
Properties: White, waxy solid, mp 32-42°. bp 249°. Freezing pt 107°F. Flash point (open cup) 255°F (127°C). Critical density 0.31 g/cc. d2045 0.9890. n60 1.4450-1.4550. pH of 5% aq soln: 11.5. Completely miscible with water and alcohol, slightly sol in toluene. Insol in hydrocarbons.
Melting point: mp 32-42°
Boiling point: bp 249°
Flash point: Flash point (open cup) 255°F (127°C)
Index of refraction: n60 1.4450-1.4550
Density: d2045 0.9890
Use: Emulsifying and neutralizing agent in cosmetics. Removal of H2S and CO2 from natural and industrial gases. Antimicrobial agent in cutting fluids.

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