Detail specification Synonyms: ferrous sulfate iron (ii) sulfate green vitriol iron vitriol copperas Appearance: blue/green crystals Cas no: 7782630 Synonyms: ferrous sulfate iron (ii) sulfate green vitriol iron vitriol copperas Appearance: blue/green crystals Hs code : 28332910 Einecs no: 2317535 Molecular weight: 278.01 Insoluble in: alcohol. Packing : 25 kgs woven bag lined with plastic bag or ton bag