сульфат железа

We are the biggest manufacturer of ferric sulphate in China,and our ferric sulphate is certified by ISO9001-2000,and was certified by NSF in 2006-2008,but we stopped NSF certification in 2009,because the economic situation of world,but the quality is same as before. We have been exported our ferric sulphate for about 9 years, Our ferric sulphate is being exported to many countries ,and our domestic and oversea customers give it high honor. Our ferric sulphate usually is used in mine ,coak plant,steel plant,power plant,oil field,life waste water and other waste water treatment ,and drinking water treatment. The specification of our ferric sulphate as follow: - Appearance : yellow powder Solubility: Readily soluble in water - Form : Dry in form & fairly uniform in size - Formula : Fe2(SO4)3. XH2O, X is 4-6. - Fe3+ content : More than 21.5% (m/m) Fe2+ content : 0.10% max Water insoluble material: Less than 0.3% of Ferric Sulphate to be insoluble in water. - Acidity : pH of 1% water solution shall be 2-3 Package:25 kg p/p bags or 600kg bags,800kg bags. And our ferric sulphate has the characteristics compared to other product 1, it is new iron salt inorganic water purified agent 2, fast settle, the time is about 5-30min, with other equipment, the speed will be faster 3, fine effect, no iron ion is transfered into water in 10 folds dosage. 4, stable, the solution can be reserved in long time, no deposit and degrade or block the pipe. 5, It can remove various impurities, especially for COD and BOD 6, nontoxic and harmless, it has not aluminum polltion, is green agent 7, The application PH is 4-11, best is 6-9, it can decrease PH and hardness of water 8, special effect to micro-pollution, algae and loe cloud water 9, the replacer for normal product , good for export