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Stability of emulsifiable concentrate pesticide formulations in liquid fertilizers
Year:
1990
Source of publication :
Pesticide Science
Authors :
Brates, Nelly
;
.
Saltzman, Sarina
;
.
Volume :
28
Co-Authors:
Saltzman, S., Institute of Soils and Water, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Brates, N., Institute of Soils and Water, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Facilitators :
From page:
181
To page:
195
(
Total pages:
15
)
Abstract:
The stability of some diluted emulsifiable concentrate formulations in clear liquid fertilizers, as affected by the nature and concentration of the salt solutions, was checked by a static test. The time‐induced changes in the concentration of the dispersed phase were estimated by visual observations and turbidity measurements. For each formulation a specific relationship between the electrical conductivity of all the fertilizer solutions and the emulsion stability was found. This was valid for a pH range between 4.6–6.3; in alkaline conditions the emulsion stability was relatively lower. A critical electrical conductivity range, above which irreversible destabilization occurred, was observed for each formulation: 100‐120 dS m−1 for fenamiphos, 60‐70 dS m−1 for metolachlor, 30‐50 dS m−1 for chlorpyrifos, and about 45 dS m−1 for S‐ethyl dipropylthiocarbamate (EPTC). The correlation observed between the emulsion stability and the electrical conductivity could be used in a simple and rapid qualitative test to estimate the physical compatibility between emulsifiable concentrate formulations and liquid fertilizers. Copyright © 1990 Wiley Periodicals, Inc., A Wiley Company
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More details
DOI :
10.1002/ps.2780280206
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21218
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:42
You may also be interested in
Scientific Publication
Stability of emulsifiable concentrate pesticide formulations in liquid fertilizers
28
Saltzman, S., Institute of Soils and Water, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Brates, N., Institute of Soils and Water, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan, 50250, Israel
Stability of emulsifiable concentrate pesticide formulations in liquid fertilizers
The stability of some diluted emulsifiable concentrate formulations in clear liquid fertilizers, as affected by the nature and concentration of the salt solutions, was checked by a static test. The time‐induced changes in the concentration of the dispersed phase were estimated by visual observations and turbidity measurements. For each formulation a specific relationship between the electrical conductivity of all the fertilizer solutions and the emulsion stability was found. This was valid for a pH range between 4.6–6.3; in alkaline conditions the emulsion stability was relatively lower. A critical electrical conductivity range, above which irreversible destabilization occurred, was observed for each formulation: 100‐120 dS m−1 for fenamiphos, 60‐70 dS m−1 for metolachlor, 30‐50 dS m−1 for chlorpyrifos, and about 45 dS m−1 for S‐ethyl dipropylthiocarbamate (EPTC). The correlation observed between the emulsion stability and the electrical conductivity could be used in a simple and rapid qualitative test to estimate the physical compatibility between emulsifiable concentrate formulations and liquid fertilizers. Copyright © 1990 Wiley Periodicals, Inc., A Wiley Company
Scientific Publication
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