SURFACTANT COMPOSITION AND USE THEREOF

1 . A surfactant composition comprising:

(a) a sulfosuccinate based compound; and

(b) a C 16 -C 22 alkyl sulfate or an alkyl ether sulfate containing C 16 -C 22 alkyl.

2 . The surfactant composition according to claim 1 , wherein the sulfosuccinate based compound is an agriculturally acceptable salt of mono-ester of sulfosuccinic acid, an agriculturally acceptable salt of di-ester of sulfosuccinic acid, each of which is optionally alkoxylated, or a mixture thereof.

3 . The surfactant composition according to claim 1 , wherein the sulfosuccinate based compound is according to the general formula (I):

wherein:

R 1 and R 2 , same or different, is

wherein R 3 is H, C 1 -C 4 alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl;

R 4 is C 1 -C 22 alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl;

n is 0 or an integer of 1 to 100;

X + is H or a cation.

4 . The surfactant composition according to claim 3 , wherein in the general formula (I), R 1 and R 2 , same or different, is R 4 —O—,

R 4 is C 1 -C 22 alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl,

X + is H or a cation.

5 . The surfactant composition according to claim 1 , wherein the C 16 -C 22 alkyl sulfate is according to the general formula (II):

R 5 OSO 3 − M +   (II)

wherein R 5 is a C 16 -C 22 alkyl or hydroxyalkyl group, either linear or branched, M + is a cation.

6 . The surfactant composition according to claim 1 , wherein the alkyl ether sulfate containing C 16 -C 22 alkyl is represented by the general formula (III):

R 6 (AO) n OSO 3 − M +   (III)

wherein R 6 is a C 16 -C 22 alkyl or hydroxyalkyl group, either linear or branched;

AO is ethylene oxide (EO), propylene oxide (PO) or mixture thereof;

n represents degree of alkoxylation and is an integer of 1 to 100;

M + is a cation.

7 . The surfactant composition according to claim 1 , wherein the surfactant composition further comprises:

(c) a C 1 -C 14 alkyl sulfate or an alkyl ether sulfate containing C 1 -C 14 alkyl.

8 . The surfactant composition according to claim 7 , wherein component (b) is at least 5 wt % of the total weight of components (b) and (c).

9 . The surfactant composition according to claim 1 , wherein the sulfosuccinate based compound is present in an amount of from 1% to 50%, based on total weight of the surfactant composition.

10 . The surfactant composition according to claim 1 , wherein the C 16 -C 22 alkyl sulfate or the alkyl ether sulfate containing C 16 -C 22 alkyl is present in an amount of from 1% to 90%, based on total weight of the surfactant composition.

11 . A solid agrochemical composition comprising an agriculturally active ingredient and the surfactant composition according to claim 1 .

12 . The solid agrochemical composition according to claim 11 , wherein the agriculturally active ingredient is one or more selected from a herbicide, an insecticide, a fungicide, an acaricide, and a rodenticide.

13 . The solid agrochemical composition according to claim 11 , wherein the solid agrochemical composition comprises said surfactant composition in an amount of from 0.1% to 10%, based on total weight of the solid agrochemical composition.

14 . The solid agrochemical composition according to claim 11 , wherein the solid agrochemical composition is a water dispersible granule (WDG), dry flowable (DF), wettable powder (WP), suspension concentrate (SC), suspoemulsion (SE), slow dispersing granule (GR) or a water soluble granule (WSG) formulation.

15 . A method for reducing or controlling the foaming of a solid agrochemical composition, comprising the step of adding to the agrochemical composition (a) a sulfosuccinate based compound; and

(b) a C 16 -C 22 alkyl sulfate or an alkyl ether sulfate containing C 16 -C 22 alkyl.