Ferrous sulphate hepta 1> 96% main content 2> Appearance:transparent blue crystal or powder 3> Application: mainly used in fertilizer,agriculture,industry,can be directly used for waste water treatment,for purification of water,for producing ferric sulphate in ferrous catalysts,as an additive in compound fertilizers&for production of Feso4.h2o. 5> Technical analysis: Fe: 21% Pb: 0.01% Soluble water 4> Packing : 25kg net plastic woven bags