Disclosed is process for preparation of agrochemical active ingredient comprise reacting carboxylic acid agrochemical active ingredient having carboxylic acid group with alkyl ether of ethoxylated alkanolamine selected from lauryl/ decyl/ octyl ether of ethoxylated dimethylethanol amine, in presence of solvent, to produce quaternary salt of carboxylic acid agrochemical active ingredient with alkyl ether of ethoxylated alkanolamine. The carboxylic acid group is suitably reacted with alkyl ether of ethoxylated alkanolamine to form quaternary salt of carboxylic acid agrochemical active ingredient with alkyl ether of ethoxylated alkanolamine. The process is carried out at 30 to 35 deg C temperature and at atmospheric pressure. The agrochemical active ingredient can be used as herbicide, pesticide, fungicide, weed killer, plant health agent or plant growth regulator and requires reduced or no use of surfactant. The agrochemical active ingredient has improved wettability and water solubility.
