... on drying:≤0.5%,<0.4%Heavy metals: ≤0.002%,<0.001%Lead: ≤0.001%,<0.001%Chloride:≤0.07%,<0.04%Sulphate:≤0.05%,<0.04%Arsenic:≤3ppm,<2ppmReducing substances: ≤0.5%,<0.3 ... , chelating agent, steel surface cleaning agent, cleaning agent for glass bottle,chelating agent for cement, plating and alumina dyeing industries.and good ...