... .5-10.0 Fluoride as F%≤ 0.003 Arsenic, as As%≤ 0.0003 Heavy metal, as Pb%≤ 0.001 Chloride, as cl% ≤ 0.025 ... . Use: Used as main detergent builder: As soft water agent, as detergent building foaning agent, as emulsifier of oils and greases, as peptizing agents, as pH ... buffers, and to provide alkalinity. Used in petroleum induatry as peptizing and deflocculation agents in oil well drilling muds, ...