... , Acid & Water Soluble Matter. It passes through I.P., B.P., & U.S.P. parameters. So, it is quite suitable for Bulk ... / w0.1% w / wChloride, Sulphate &Heavy MetalsPasses U.S.P.Passes U.S.P., B.P. AppearanceFine Black PowderMethylene Blue Value mg / gm ...