Decomposition of Basamid in Douglas-fir heartwood: Laboratory studies of a potential wood fumigant Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/ng451j01g

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Basamid (3,5-dimethyl-l,3,5,2H-tetrahydrothiadiazine-2-thione), a crystalline powder first used as a soil sterilant, has shown promise as a wood fumigant. This chemical decomposes to methylisothiocyanate (MITC), the primary active ingredient, as well as other products; but the rate of decomposition in wood is too slow to be effective unless certain catalysts are used. This study explored conditions and additives that accelerated Basamid decomposition in Douglas-fir heartwood. MITC production increased with increasing temperature and moisture content. Decomposition was also enhanced by a buffer powder formulated to reach pH 12 when mixed with 100 ml of water and, more efficiently, by copper sulfate. Carbon disulfide, a less fungitoxic compound, was the only other decomposition product detected in this study. Additional tests using a purge-and-trap system indicated that MITC was produced at a steady, moderate rate over a 28-day period. Addition of copper as a catalyst in these tests increased MITC production only during the first 7 days. Chemical analyses of residues at the conclusion of the tests indicated that most of the Basamid remained unchanged, providing a reservoir of chemical that should provide long-term MITC release.
Resource Type
Date Available
Date Issued
Citation
  • Forsyth, Paul G., and Jeffrey J. Morrell, 1995. Decomposition of Basamid in Douglas-fir heartwood: Laboratory studies of a potential wood fumigant. Wood and Fiber Science, 27(2): 183-197.
Academic Affiliation
Series
Keyword
Rights Statement
Publisher
Language
Replaces
Additional Information
  • description.provenance : Submitted by Caryn Davis (caryn.davis@oregonstate.edu) on 2009-12-18T20:25:27Z No. of bitstreams: 1 decomposition of basimid.pdf: 1605826 bytes, checksum: dd47ffdeb55616b9981e4bfbde53d3dd (MD5)
  • description.provenance : Approved for entry into archive by Caryn Davis(caryn.davis@oregonstate.edu) on 2009-12-18T21:37:29Z (GMT) No. of bitstreams: 1 decomposition of basimid.pdf: 1605826 bytes, checksum: dd47ffdeb55616b9981e4bfbde53d3dd (MD5)
  • description.provenance : Made available in DSpace on 2009-12-18T21:37:29Z (GMT). No. of bitstreams: 1 decomposition of basimid.pdf: 1605826 bytes, checksum: dd47ffdeb55616b9981e4bfbde53d3dd (MD5) Previous issue date: 1995-04

Relationships

In Administrative Set:
Last modified: 07/06/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items