... Heptahydrate Agriculture Grade 2)Zn :22.8%,22.51% Min 3)ZnSO4:98%,99%Min 4)Form:White crystal powder,granule ... 7H2OMolecular weight: 287.56CAS NO.:7446-20-0.EINECS NO.:231-793-3Appearance: White or slight-yellow crystal, loose and no agglomeration ... with other multiplex fertilizer and prevent fruit tree against diseases.3)Characteristic and functionEasy solubie in water, quick absorbable for the ...