... , paint remover, bakelite, pickled plate, etc.(4) Leather Industry: Leather tanning agent, deliming agent, and neutralizer.(5) Rubber Industry: Natural rubber ... polycoagulant.(6) Other: Formic Acia may also be used for making printing mordant, fiber and paper staining agent, processing agent ... antistaling agent, animal fodder additive, etc. colorless liquid formic acid for sale