Used as an analytical reagent；Catechol is an intermediate of the bactericide ethmocarb, pesticide propoxur and carbofuran；As an important pharmaceutical intermediate, it is used to manufacture berberine and isoproterenol. It can also be used to produce 4-tert-butyl Catechol as polymerization inhibitor for styrene, butadiene and Chemalbook vinyl chloride. Or used in the manufacturing of antioxidants, developers, fungicides, rubber additives, electroplating additives, special inks, light stabilizers, dyes, spices, etc；Catechol is an important chemical intermediate, which can be used as rubber hardener, electroplating additive, skin antiseptic, hair dye, Photographic developer, color photo antioxidant, etc；Determination of titanium, molybdenum, tungsten, vanadium, iron, and cerium by color reaction or colorimetric analysis。