Registration Dossier
Registration Dossier
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EC number: 203-558-5 | CAS number: 108-18-9
Endpoint summary
Administrative data
Description of key information
More information will be discussed later based on ECHA communication/decision number CCH-D-2114521395-52-01/D
Additional information
Terrestrial fate
Volatilization of diisopropylamine from moist soil surfaces is not expected to be an important fate process since the cation will not volatilize. The potential for volatilization of diisopropylamine from dry soil surfaces may exist based upon a vapor pressure of 79.4 mm Hg at 25 deg C (Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals Data Compilation Washington, DC: Taylor and Francis (1989)).
A determination of Koc has been determined using a calculation method developed for ionizable organic chemicals. A value of 66 has been obtained indicating that diisopropylamine is not expected to sorb on soil particles.
Aquatic fate
Volatilization from water surfaces is not expected to be important fate process since the protonated form is not expected to volatilize at environmental pH.
Atmospheric fate
According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere (Bidleman TF; Environ Sci Technol 22: 361-367 (1988)), diisopropylamine, which has a vapor pressure of 79.4 mm Hg at 25 deg C, is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase diisopropylamine is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals; the half-life for this reaction in air is estimated to be 4 hours, from its rate constant of 9.7*10 -11 cm3/molecule-sec at 25 deg C (Meylan WM, Howard PH; Chemosphere 26: 2293-99 (1993)). Diisopropylamine is not expected to directly photolyze due to the lack of absorption in the environmental UV spectrum.
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