CAS RN:646-06-0

Exposure Summary

1,3-Dioxolane's production and use as a low-boiling solvent and extractant for oils, fats, waxes, dyes and cellulose derivatives may result in its release to the environment through various waste streams. If released to air, a vapor pressure of 79 mm Hg at 20 deg C indicates 1,3-dioxolane will exist solely as a vapor in the atmosphere. Vapor-phase 1,3-dioxolane will be degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals; the half-life for this reaction in air is estimated to be 37 hours. If released to soil, 1,3-dioxolane is expected to have very high mobility based upon an estimated Koc of 15. Volatilization from moist soil surfaces is expected to be an important fate process based upon a Henry's Law constant of 2.45X10-5 atm-cu m/mole. 1,3-Dioxolane may volatilize from dry soil surfaces based upon its vapor pressure. Biodegradation data were not available. If released into water, 1,3-dioxolane is not expected to adsorb to suspended solids and sediment based upon the Koc. Volatilization from water surfaces is expected to be an important fate process based upon this compound's Henry's Law constant. Estimated volatilization half-lives for a model river and model lake are 33 hours and 13 days, respectively. An estimated BCF of 3 suggests the potential for bioconcentration in aquatic organisms is low. Hydrolysis is not expected to be an important environmental fate process since this compound lacks functional groups that hydrolyze under environmental conditions. Occupational exposure to 1,3-dioxolane may occur through inhalation and dermal contact with this compound at workplaces where 1,3-dioxolane is produced or used. (SRC)
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