Stable suspension concentrate formulation for water-soluble compounds
The present invention is directed to an insecticidal water based suspension concentrate formulation comprising a water-soluble insecticide selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine and at least one water-soluble salt selected from the group consisting of magnesium sulfate (hydrated and anhydrous forms) and sodium sulfate, wherein the water-soluble insecticide is present in an insecticidally effective amount and methods of use.
1. A stable water-based suspension concentrate composition comprising:
a) a water-soluble insecticide selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine present in an amount of from about 1% to about 40%;
b) magnesium sulfate present in an amount of from 10% to 30%;
c) a surfactant component present in a concentration of from 1% to 5%;
d) an anti-foam agent present in an amount of from 0.001% to 1%;
e) a preservative present in an amount of from 0.001% to 1%;
f) a thickener or suspending agent present in an amount of from 0.01% to 1.0%; and
g) water in an amount of from about 37% to about 73%, wherein all %'s are % by weight based upon the total weight of all the components in of the suspension concentrate;
and wherein the composition does not exhibit Ostwald ripening.
2. The composition of claim 1 wherein the water-soluble insecticide is N-cyanomethyl-4-(trifluoromethyl)nicotinamide.
3. The composition of claim 2 wherein the water-soluble insecticide is present in a concentration of from about 10% to about 25% by weight of the suspension concentrate.
4. The composition of claim 1 wherein the water-soluble insecticide is (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine.
5. The composition of claim 4 wherein the water-soluble insecticide is present in a concentration of from about 10% to about 25% by weight of the suspension concentrate.
6. The stable water-based suspension concentrate composition of claim 1 comprising:
N-cyanomethyl-4-(trifluoromethyl)nicotinamide and
water in an amount of from about 51% to about 67% by weight of the suspension concentrate.
7. The stable water-based suspension concentrate composition of claim 1 comprising:
(EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine and
water in an amount of from about 51% to about 67% by weight of the suspension concentrate.
8. A method for controlling unwanted insects comprising applying a composition of claim 1 to a locus where insects are present or are expected to be present.
9. A stable water-based suspension concentrate composition comprising:
a) a water-soluble insecticide selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine;
b) a water-soluble salt selected from the group consisting of magnesium sulfate and sodium sulfate; and
c) water present as diluent in an amount of from about 51% to about 67% by weight of the suspension concentrate;
wherein the insecticide is present in an amount of from about 10% to about 25% by weight of the suspension concentrate and the salt is present in an amount of from about 10% to about 20% by weight of the suspension concentrate;
wherein the composition further comprises a surfactant component in an amount of from 1% to 5% by weight of the suspension concentrate; and
wherein the composition does not exhibit Ostwald ripening.
10. A method for controlling unwanted insects comprising applying a composition of claim 9 to a locus where insects are present or are expected to be present.