Chrome oxide green ceramic grade Formula: Cr2o3. Cr2o3 content:99%min. Tinting strength:100+/-5% Oil absorption:15-25% Fineness(residue through 325mesh):0.3%max. Water soluble matter:0.3%max. Moisture:0.2%max. Packing: in 25/1000 kgs bags. Best Regards Yang Haitao HENAN KINGWAY CHEMICALS CO.,LTD.