iron%,min 21.0-27.0 Reducing substance (Fe2+), max 0.10 PH ( ... in neutralizing, higher and denser positive charge than Polymer Ferric Sulphate and other compound chemical product;4. Under the same concentration ... , air slaking and efflorescence.MAIN APPLICATIONS: Used for agricultural pesticide, fertilizer, feed, pigment , catalyst, decontaminant, antisepticsand magnetic material etc.Ferrous Sulfate ...