Description of grades

Zinc Oxide grades are primarily differentiated by purity levels and surface area. The grades listed below can be propionic acid treated for aided dispersion and can be granulated for reduced dusting and improved flow characteristics.

Standard packaging includes 50 lb. and 25 kg. paper bags, bulk bags in various weights and sizes, custom weight polyethylene bags and bulk pneumatic truck delivery. G.H. Chemicals can accommodate virtually any special packaging needs.
Grade Description Min. Purity % Surface area Max. Lead % Details Download
CR-4 Medium particle size 99.9 4.5 0.003 Technical sheet Pdf
CR-4S Medium particle size 99.9 5.0 0.003 Technical sheet Pdf
CR-41 Higher reactivity 99.9 6.0 0.003 Technical sheet Pdf
CR-42 Fine particle size 99.9 9.0 0.003 Technical sheet Pdf
CR-40 Treated ZnO (0.15%) 99.8 4.5 0.003 Technical sheet Pdf
CR-40E Acid treated ZnO (0.5%) 99.4 5.0 0.003 Technical sheet Pdf
CR-4G Granulated 99.9 4.5 0.003 Technical sheet Pdf
CR-4SG Granulated 99.9 5.0 0.003 Technical sheet Pdf
CR-40G Acid treated + Granulated 99.8 4.5 0.003 Technical sheet Pdf
CR-4 USP 1 10 PPM MAX LEAD 99.9 4.5 0.001 Technical sheet Pdf
CR-4 USP 2 Pharma / BP grade 99.9 4.5 0.002 Technical sheet Pdf
CR-4 USP/FCC 1 Pharma grade 10 ppm max lead and 3 ppm max cadmium 99.9 4.5 0.001 Technical sheet Pdf
CR-4 USP/FCC 5 very low lead/cadmium pharma 99.9 4.5 0.0005 Technical sheet Pdf
CR-42 USP 1 FINE PARTICLE USP 10 PPM LEAD 99.9 9.0 0.001 Technical sheet Pdf
CR-42 USP 2 Fine particle pharma 99.9 9.0 0.002 Technical sheet Pdf
CR-42 USP/FCC 1 Pharma/food grade 10 ppm max lead and 3 ppm max cadmium 99.9 9.0 0.001 Technical sheet Pdf
TR-4 Feed and agricultural ZnO 98.0 N/A 0.04 Technical sheet Pdf