Accession Number : ADA185050
Title : Environmental Fate of Nitroguanidine, Diethyleneglycol Dinitrate, and Hexachloroethane Smoke. Phase 1.
Descriptive Note : Final rept. 1 Oct 84-1 Dec 85,
Corporate Author : SRI INTERNATIONAL MENLO PARK CA
Personal Author(s) : Spanggord, Ronald J ; Chou, Tsong-Wen ; Mill, Theodore ; Podoll, R T ; Harper, James C
PDF Url : ADA185050
Report Date : Dec 1985
Pagination or Media Count : 86
Abstract : This study was conducted to identify dominant loss and movement processes for nitroguanidine (NG), diethyleneglycol dinitrate (DEGDN), and hexachloroethane smoke products in air, soil, and water environments. The loss of NG in the aqueous environment will be dominated by photolysis, with half-lives ranging from 1.6 days in the summer to 3.9 days in the winter. Biotransformation occurred under both aerobic and anaerobic conditions, with half-lives of 4 and 6 days, respectively, in the presence of extra organic nutrients. NG is projected to move readily through soils (Kp 0.1); however, anaerobic biotransformation occurs readily in soil, with an estimated half-life of 4 days. DEGDN was found to undergo photolytic transformation, with half-lives ranging from 27 to 35 days in natural and pure waters. Biotransformation also occurs in water, with half-lives of 5 to 40 days, depending on the amount of organic nutrients present. DEGDN is expected to migrate readily through soil (Kp = 2). In sediment, DEGDN was found to bind strongly by processes that are not yet understood. Biotransformation will also occur in sediment under anaerobic conditions, whereas aerobic biotransformation appears to be slow.
Descriptors : *NITROGUANIDINE, NITRATES, ETHYL RADICALS, CHLOROETHANES, ENVIRONMENTAL TESTS
Subject Categories : Organic Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE