Dear friend,we’re glad to introduce our main product as beow: Composition Specification Appearance White needle crystal or crystalline powder MF C2H7NO3S CAS NO 107-35-7 Assay(anhydrous) % 98.5-101.5 conductivity,≤ 150 PH 4.1-5.6 Loss on ignition,≤ % 0.10 Loss on Loss,≤ % 0.20 Arsenic(As),≤ppm 2 Clarity and colour of solution Clear and colourless Chloride(CI),≤ % 0.02 Sulphate(SO4),≤ % 0.02 ...