3195. Diisopropanolamine

Nomenclature

CAS number: 110-97-4
1,1′-Iminobis-2-propanol; bis(2-hydroxypropyl)amine; DIPA.
C6H15NO2; mol wt 133.19.
C 54.11%, H 11.35%, N 10.52%, O 24.02%.

Description and 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).

Chemical structure

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.

Use

Emulsifying and neutralizing agent in cosmetics. Removal of H2S and CO2 from natural and industrial gases. Antimicrobial agent in cutting fluids.