Record Display for the EPA National Library Catalog

RECORD NUMBER: 797 OF 1148

OLS Field Name OLS Field Data
Main Title Purity and Heat of Fusion Data for Environmental Standards as Determined by Differential Scanning Calorimetry.
Author Donnelly, J. R. ; Drewes, L. A. ; Johnson, R. L. ; Munslow, W. D. ; Knapp, K. K. ;
CORP Author Lockheed Engineering and Sciences Co., Inc., Las Vegas, NV.;Environmental Monitoring Systems Lab., Las Vegas, NV.
Publisher c1990
Year Published 1990
Report Number EPA-68-03-3249; EPA/600/J-90/301;
Stock Number PB91-146555
Additional Subjects Differential thermal analysis ; Heat of fusion ; Herbicides ; Pesticides ; Organic compounds ; Calorimetry ; Purity ; Data acquisition ; Temperature ; Reprints ; Environmental standards
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB91-146555 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/13/1991
Collation 35p
Abstract
Differential scanning calorimetry (DSC) has been applied to 273 environmental standards, including pesticides, herbicides and related compounds. Members of the following chemical classes were analyzed: organophosphorus, organochlorine, phenol, triazine, uracil, phenoxy acid, urea, carboxylic acid, amide, and others including amines, organometallics, esters and heterocycles. Values for the heat of fusion, experimental temperature onset, theoretical temperature onset for 100% pure compound, and percent purity are presented. DSC was found to be a widely applicable method to most classes of organic environmental standards and their metabolites.