magnesium sulphate hepta ,99.5% min 1,Origin : Tianjin, China 2, MgSO4.7H2O 3, white crystal magnesium sulphate hepta ,99.5% min 1,Origin : Tianjin, China 2, MgSO4.7H2O 3, white crystal MAGNESIUM SULPHATE(feed grade) NoTest ItemTechnical specification (%)Analysis Results(%)1Purity99.599.822Mg9.79.733MgO1616.24MgSO448%48.7%5Chloride0.010.0016Iron0.0010.00027Water insoluble substance0.050.018As0. ...