Case Study on Pesticide Formulation Effect on the Physical Properties of the Chemical.

Abstract

Endosulfan EC 35 percent was tested for its surface tension, absolute viscosity and density properties under different concentrations Their corresponding terminal velocities and droplet size formations were determined. It was observed that as the concentration was increased (a) the terminal velocities reduced; (b) the droplet sizes reduced; and (c) surface tension decreased. Absolute viscosity was found to be directly proportional to the change in the concentration. The density of the chemical was not changed by the concentration of the formulation. The effect of concentration on the inertial force was found to be reduced as the concentration increased The influence of viscous force was found to be more dominant than the gravitational force. While the Reynolds number and Froude number were found to vary linearly with the concentration, the Weber number was curvi-linearly correlated. ollot edt mon ben The density of endosulfan formulation with 34 percent concentration does not differ much from that of water whose density is 1.00 gm/cc, since significant change in density cannot be expected as 0.4 ml or less of the pesticide is mixed with the ether in this case. Out of the three dimensionless numbers considered excepting Froude number, the other two numbers involve the density factor. The influence of density, therefore, can be ascertained only on further studies by incorporation pesticides of varying densities for test with reference to Reynelds and Weber number.

DOI

https://doi.org/10.29321/MAJ.10.003184

Pages

43 - 46

Creative Commons

Copyright

© The Author(s), 2026. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords