Stable suspension concentrate formulation for water-soluble compounds

1. A stable water-based suspension concentrate composition consisting of:

a) a water-soluble insecticide present in a concentration of from 10% to 25% by weight based upon the total weight of all tthe components in the composition selected from the group consisting of N-cyanomethyl-4-(trifluoromethyl)nicotinamide and (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine;

b) a neutral water-soluble salt selected from the group consisting of magnesium sulfate and sodium sulfate;

wherein the salt is present in an amount of from 10% to 30% by weight based upon the total weight of all components in the composition;

c) optionally a surfactant component;

d) optionally an antifoam agent;

e) optionally a preservative;

f) optionally a thickener or a suspending agent; and

g) water.

2. The composition of claim 1 wherein the water-soluble insecticide is N-cyanomethyl-4-(trifluoromethyl)nicotinamide.

3. The composition of claim 1 wherein the water-soluble insecticide is (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine.

4. A composition of claim 1 wherein the neutral water-soluble salt is magnesium sulfate and is present in an amount of from 10% to 30% by weight of all the components in the total composition.

5. The composition of claim 1 wherein the surfactant component is present in a concentration of from 1% to 5% by weight based on the total weight of all the components of the formulation.

6. The composition of claim 1 wherein the anti-foam agent is present in an amount of from 0.001% to 1% by weight of all the components in the total formulation.

7. The composition of claim 1 wherein the preservative is present in an amount of from 0.001% to 1% by weight of all the components in the total formulation.

8. The composition of claim 1 wherein the thickener or suspending agent is present in an amount of from 0.01% to 1.0% by weight of all the components in the total formulation.

9. 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.

10. A stable water-based suspension concentrate composition consisting of:

a) N-cyanomethyl-4-(trifluoromethyl)nicotinamide present in an amount of from 10% to 25%;

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;

wherein all % are % by weight based on the total weight of all the components in the formulation.

11. A method for controlling unwanted insects comprising applying a composition of claim 10 to a locus where insects are present or are expected to be present.

12. A stable water-based suspension concentrate composition consisting of:

g) (EZ)-1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylidineamine present in an amount of from 10% to 25%;

h) magnesium sulfate present in an amount of from 10% to 30%;

i) a surfactant component present in a concentration of from 1% to 5%;

j) an anti-foam agent present in an amount of from 0.001% to 1%;

k) a preservative present in an amount of from 0.001% to 1%;

l) a thickener or suspending agent present in an amount of from 0.01% to 1.0%; and

m) water;

wherein all % are % by weight based on the total weight of all the components in the formulation.

13. A method for controlling unwanted insects comprising applying a composition of claim 12 to a locus where insects are present or are expected to be present.