This product is a mild oxidant, which can protect the shade when fabric printing or pad dyeing is steamed. When fabric is smelted and mercerized, it should be attached with knife wire and cover paste, which can offset the effect of reducing substances. It can also be used as a synthetic dye. time oxidizing agent. This product is used as a vat dye, a sulfur dye resist, a dye color protection agent, a ship rust remover and an electroplating nickel stripper, and an intermediate of dye and vanillin.