Document Detail

Analysis of pesticides by chemical derivatization. I. a new procedure for the formation of 2-chloroethyl esters of ten herbicidal acids.
MedLine Citation:
PMID:  354     Owner:  NLM     Status:  MEDLINE    
A new esterification procedure was developed to form 2-chloroethyl esters for 10 common herbicidal acids, using dicyclohexyl carbodiimide and 2-chloroethanol. This reagent was found to be more desirable than the commonly used boron trichloride/2-chloroethanol reagent. Maximum esterification was given for picloram at a lower reaction temperature with a shorter reaction time. Also, maximum esterification of dicamba and 2,3,6-TBA was achieved. The boron trichloride/2-chlorethanol gave poor or little esterification with these 2 acids under the various conditions investigated. The effect of solvents on esterification with the 2 reagents was also explored.
A S Chau; K Terry
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal - Association of Official Analytical Chemists     Volume:  58     ISSN:  0004-5756     ISO Abbreviation:  J Assoc Off Anal Chem     Publication Date:  1975 Nov 
Date Detail:
Created Date:  1976-02-09     Completed Date:  1976-02-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7505559     Medline TA:  J Assoc Off Anal Chem     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1294-1301     Citation Subset:  IM    
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MeSH Terms
Chemical Phenomena
Esters / analysis
Herbicides / analysis*
Hydrogen-Ion Concentration
Indicators and Reagents
Water Pollutants, Chemical / analysis
Reg. No./Substance:
0/Esters; 0/Herbicides; 0/Indicators and Reagents; 0/Solvents; 0/Water Pollutants, Chemical

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