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Formate esters of 1,2-ethanediol - Major decomposition products of p-dioxane during storageResearch done on detecting the contaminants of p-dioxane that cause a positive response for highly reactive acyl groups is discussed. Attention is given to the fact that the positive hydroxamate response might indicate an unsuspected hazard. It is found that all acyl groups transferred are formyl groups, and the mono- and diformates of 1,2-ethanediol are identified as major sources of this activity. It is also found that the formate esters are formed by way of peroxide intermediates. Concentrations of the formate ester group as high as 1.8 M are found in partially consumed bottles of dioxane but not in other common ethers stored under similar conditions. Attention is called to the possibility that the exposure to the glycol formates is probably much wider than expected. It is noted that by purging containers of dioxane with nitrogen each time they are opened and storing them in the cold away from light can prevent both the economic loss and possible health hazard caused by contamination with peroxide and formate ester.
Document ID
19810040563
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Jewett, D.
(NASA Ames Research Center Moffett Field, CA, United States)
Lawless, J. G.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Publication Information
Publication: Bulletin of Environmental Contamination and Toxicology
Volume: 25
Subject Category
Chemistry And Materials (General)
Accession Number
81A24967
Distribution Limits
Public
Copyright
Other

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