Supply of ferrous sulfate heptahydrate

Extruded particles of ammonium sulfate, can provide export commodity inspection. English neutral packaging. Containing more than N21. Item Index detection value quality standards in line with the national standard GB 535-1995 content (N)% ≥21 21.06 sulfuric acid (H2SO4) content% ≤0.03 0.01 iron (Fe)% ≤0.007 0.002 arsenic (As)% ≤0.00005 0.00001 heavy metals (Pb) % ≤0.005 0.001 matter insoluble in water ≤0.01 0.002 water (H2O) content% ≤1.0 0.07 Properties white crystals, no visible mechanical impurities Qualified Conclusion Contact: Wang Zhiwen Tel: 02784410680 13317109906 E-mail: whkzkj@hotmail.com