Allyl Chloride

CAS RN: 107-05-1

Exposure Summary

Allyl chloride's production and use as a chemical intermediate may result in its release to the environment through various waste streams. If released to air, a vapor pressure of 368 mm Hg at 25 deg C indicates allyl chloride will exist solely as a vapor in the atmosphere. Vapor-phase allyl chloride 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 0.8 days. Allyl chloride does not contain chromophores that absorb at wavelengths >290 nm and therefore is not expected to be susceptible to direct photolysis by sunlight. If released to soil, allyl chloride is expected to have high mobility based upon an estimated Koc of 51. Volatilization from moist soil surfaces is expected to be an important fate process based upon an estimated Henry's Law constant of 1.10X10-2 atm-cu m/mole. In addition, allyl chloride may volatilize from dry soil surfaces based upon its vapor pressure. If released into water, allyl chloride is not expected to adsorb to suspended solids and sediment based upon the estimated Koc. A BOD of 62% measured in the Japanese MITI test, indicates that biodegradation of allyl chloride is expected to be an important environmental fate process. Volatilization from water surfaces is expected to be an important fate process based upon this compound's estimated Henry's Law constant. Estimated volatilization half-lives for a model river and model lake are 3 hours and 3 days, respectively. A calculated BCF range of <0.14 to <1.3 suggests the potential for bioconcentration in aquatic organisms is low. Allyl chloride is hydrolyzed at pH=7 with a half-life of approximately 8 days. Occupational exposure to allyl chloride may occur through inhalation and dermal contact with this compound at workplaces where allyl chloride is produced or used. Monitoring data indicate that the general population may be exposed to allyl chloride via inhalation of ambient air. (SRC)
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