High Quality Content by WIKIPEDIA articles! An oil drying agent is a chemical compound that speeds up the hardening (catalyzes) of drying oils through chemical crosslinking via affecting the autoxidation of the oils with air. Typical oil drying agents are derived from cobalt, manganese, and iron and lipophilic carboxylic acids such as naphthenic acids to make them oil-soluble. Such agents are called salts, but they are probably non-ionic coordination complexes akin to basic zinc acetate. Japan drier... Mehr