Since 2024, the nature of the technical emamectin benzoate has changed considerably, mainly in the form of an increase in salt impurities and a lower melting point, which has caused problems in the processing and production of various formulations.
Due to the changes in the original drug of emamectin benzoate, many problems have also arisen when processing water dispersible granule formulations of emamectin benzoate alone or in combination with other A.I.s( such as Emamectin benzoate 10 Lufenuron 40 WDG)
Figure 1. Emamectin benzoate WDG mass production issues caused by original drug quality fluctuation
- During extrusion granulation process, due to the poor temperature resistance of the original drug,
It is difficult to extrude after melting of the original drug and there are clumps on the screen.
- After repeated extrusion and scraping, the granulation is getting slower and slower, the materials become hard, and the smoothness of the granule is poor.
- After drying process, disintegration of granules becomes poor, there is still non-disintegrating granules after 30-40 times inversion.
How to solve the production problems of emamectin benzoate water dispersible granules caused by quality change in TC?
Let's learn about the #SINVOCHEM solution by use of naphthalene sulfonate based dispersant SP-WG00!
Dispersant SP-WG00
(NSF, Enhance High Temperature Resistance of Formulations)
Dispersant SP-WG00 is a modified alkyl naphthalene sulfonate (methylene combines naphthalene coreand sulfonic acid group).
Developed catalyst and condensation process gives the product higher molecular weight, leads to ideal high temperature tolerance, suspensibility of formulations.
Features
a. Especially suitable for WG includes active ingredient with low melting point, solving the issue of worse disintegration after drying such as 25% Pyraclostrobin WG.
b. Suitable for Emamectin Benzoate series WG, compared to conventional naphthalene sulfonates, its disintegration performance improves by 30%-50%,such as Emamectin benzoate 10 Lufenuron 40.
c. Improving high temperature resistance ability.
SP-WG00 can effectively solve the problems of slow disintegration and non-disintegrating granules of water dispersible granules after the change of the original drug of emamectin benzoate. It has good application performance both in signal and combination of emamectin benzoate WDG formulations.
30% Emamectin benzoate WDG
|
Item |
SP-WG00 |
Market benchmark |
||
|
Room temperature |
Disintegration rate (s) |
15 |
18 |
|
|
Suspensibility (342ppm, 200X dilution) |
30 min |
0.03 ml sediment |
0.03 ml sediment |
|
|
12 h |
no flocculation |
flocculation |
||
|
Thermal storage (54±2℃/14d) |
Disintegration rate (s) |
15 |
24 |
|
|
Suspensibility (342ppm, 200X dilution) |
30 min |
0.03 ml sediment |
0.03 ml sediment |
|
|
12 h |
no flocculation |
flocculation |
||
Table 1. 30% Emamectin benzoate WDG
disintegration and suspensibility test before and after thermal storage
|
|
|
|
After 3 hours |
After 12 hours |
remark:left SP-WG00, right market benchmark
Figure 2. 30% Emamectin benzoate WDG dilution stability test
Compared with market benchmark, 30% Emamectin benzoate WDG formulated with SP-WG00 disintegrates faster and shows better performance on hard water resistance. Besides, the 200 times dilution does not flocculate after 12 hrs.
Emamectin benzoate 10 Lufenuron 40 WDG
|
Item |
SP-WG00 |
Market benchmark |
||
|
Room temperature |
Disintegration rate (s) |
20 |
non-disintegrating granules |
|
|
Suspensibility (342ppm, 200X dilution) |
30 min |
0.05 ml sediment, no non-disintegrating granules |
-- |
|
|
Thermal storage (54±2℃/14d) |
Disintegration rate (s) |
25 |
-- |
|
|
Suspensibility (342ppm, 200X dilution) |
30 min |
0.05 ml sediment, no non-disintegrating granules |
-- |
|
Table 2. Emamectin benzoate 10 Lufenuron 40 WDG
disintegration and suspensibility test before and after thermal storage
It can be seen from the data in the table, the SP-WG00 formula disintegrates without non-disintegrating granules, and the competitor disintegrates with non-disintegrating granules.
As the process of technicals changes, the fluctuation of technicals quality requires higher adaptability of adjuvants and formulations.=
SINVOCHEM not only provide customers with high-quality adjuvants, but also provide formulation support to face the challenges of fluctuations in the quality of technicals, contributing to the sustainable development of agriculture.