The product is milky white with reddish paste, weakly alkaline, low toxic, soluble in water, acid and alkali solution, PH is 4~5, the solubility is minimum, the content is about 80%.The recovery rate of lead vitriol ore is higher when the concentration is 4 ~ 6 mg/L, PH is 3 ~ 6; The recovery rate of smithsonite is greatly improved  when the concentration is 150~250mg/L, PH is 8 ~ 10. environmental protection of inflammable and explosive goods. And this agent is environment-friendly non flammable and explosive products.