Ferrous sulfate heptahydrate is also called green vitriol .It is ferrous sulfate crystals for columnar or granular aggregates , kind of irregular block. Blue green, green with white streak. The molecular weight is 278.05, pH value was 3, the melting point of 64 degrees Celsius, strong thermal decomposition, glycerol is soluble in water, insoluble in ethanol. The main natural copperas containing ferrous sulfate (FeSO4 -7H2O).Ferrous Sulphate Heptahydrate serves as a water purifier, gas purifying agent, mordant and herbicides. Green vitriol is also used for ink, paint, etc. In medicine, Ferrous sulfate heptahydrate applies as a blood tonic.
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