Record Display for the EPA National Library Catalog

RECORD NUMBER: 22 OF 34

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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	Checkout Status
NTIS	PB91-146555	Some EPA libraries have a fiche copy filed under the call number shown.		07/26/2022

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.

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