Journal article
Degradation of 3,5‐dimethyl‐tetrahydro‐2H‐1,3,5‐thiadiazine‐2‐thione in aqueous aerobic media
Environmental toxicology and chemistry, Vol.15(4), pp.503-513
04/1996
DOI: 10.1002/etc.5620150415
Abstract
Decomposition of 3,5‐dimethyl‐tetrahydro‐2H‐1,3,5‐thiadiazine‐2‐thione (DTTT) has been studied by UV‐visible spectroscopy (UV‐VIS), high‐performance liquid chromatography (HPLC), gas chromatography‐mass spectrometry (GC‐MS), and fast atom bombardment‐mass spectrometry (FAB‐MS). Hydrolysis rate constants for DTTT and rate constants for product formation were measured. The partially hydrolyzed and aged DTTT solutions have been separated and analyzed by GC‐MS. Formaldehyde, 1,3‐dimethyl‐2‐thiourea, N ‐methyl dithiocarbamic methyl ester, N ‐methyldithiocarbamic perthiomethyl ester, 2‐methyl‐5‐dihydro‐3H‐4‐thia‐1,2‐isooxazolidine‐3‐thione, 1,3,5‐trimethyl‐hexahydro‐2H‐1,3,5‐triazine‐2‐thione, 4‐methyl‐5‐methylimino‐1,2,4‐dithiazolidine‐3‐thi‐one, and 2,4‐dimethyl‐1,2,4‐thiadiazolidine‐3,5‐dithione were identified from the hydrolyzed DTTT solution. Methyl isothiocyanate, which is one of the intermediates formed during the decomposition of DTTT, was also monitored by UV‐VIS and HPLC for the formation of common products and characterized by GC‐MS. The decomposition pathways for DTTT are presented and are in accord with the limited literature data. Environmental impact assessment of the DTTT and its metabolites is summarized.
Details
- Title: Subtitle
- Degradation of 3,5‐dimethyl‐tetrahydro‐2H‐1,3,5‐thiadiazine‐2‐thione in aqueous aerobic media
- Creators
- Periyasamy SubramanianLynn TeeschPeter S Thorne
- Resource Type
- Journal article
- Publication Details
- Environmental toxicology and chemistry, Vol.15(4), pp.503-513
- Publisher
- Wiley Periodicals, Inc; Hoboken
- DOI
- 10.1002/etc.5620150415
- ISSN
- 0730-7268
- eISSN
- 1552-8618
- Number of pages
- 11
- Grant note
- University of Iowa Environmental Health Sciences Research Center (NIH/NIEHS grant P30 E05605) Environmental Assessment Facility
- Language
- English
- Date published
- 04/1996
- Academic Unit
- Occupational and Environmental Health; Civil and Environmental Engineering; Core Research Facilities; Medicine Administration
- Record Identifier
- 9984001082002771
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