This standard specifies in detail the classification, requirements, test methods, inspection rules, labeling, Encasement and storage of rare earth driers for liquid carboxylic acid (naphthenic acid, isooctanoic acid). It is suitable for rare earth driers used in the Coating industry, mainly composed of carboxylic acid and rare earth chloride. These driers are used in solvent-based paints such as oxidation coalescence and film formation varnish, Paints, undercoat, etc. This drier can replace traditional cobalt driers and has good catalytic effect. The standard refers to a series of specification documents, such as the preparation method of chemical reagent standard titration solution, varnish Color determination method, Coating fineness determination method, etc., to ensure that the mass and performance of the product meet the standard requirements. According to the use in Coating, the product is divided into two categories: naphthenic acid rare earth and isooctanoic acid rare earth, and the technical requirements that the product performance should meet are clarified.