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Environmental fate & pathways

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The results of biodegradation screening tests are variable. 1,2-Dichloropropane was not degraded in the Zahn-Wellens Test for inherent biodegradability. No degradation was also observed in the Modified MITI Test (301C). However, based on the supporting studies, 1,2-dichloropropane is susceptible to biodegradation under aerobic conditions when incubated with adapted cultures, particularly those containing microbial oxygenase enzymes with broad substrate specificity.

1,2-Dichloropropane was degraded in water and sediment by naturally occurring organisms under anaerobic conditions. Studies conducted with sediments from Red Cedar Creek demonstrated stochiometric conversion to propene after 4 months of incubation. Based on these results, the estimated half-life in surface sediments is 60 days at 25 C.

Half-lives for the dissapation of 1,2-dichloropropane in soils range from 41 to 69 days (average 52 days) at 15C. Based on the release rates of water extractable inorganic chloride, the complete degradation of 1,2-dichloropropane is slow.