RP-99 is widely used as catalyst and adsorbent bed support in refining, petrochemical and gas processing applications, where low silica content or high density is required. Available sizes: 3mm, 6mm, 10mm, 13mm, 19mm, 25mm, 38mm, 50mm, 75mm Chemical composition: SiO2 í_0.20% Al2O3 í¦99.2% CaO 0.08% TiO2 0.05% MgO 0.05% K2O 0.04% Na2O 0.09% leachable Iron less than 0.01% Physical properties: Free volume (%) 40 Water absorption (wt. %) ú+3 Hardness, Mohsí» ú+8 Particle density ( gm/cc ) 3.5 Bulk density (kg/m3) 1900-2100 Maximum operating temperture(íµ) 1800 Crush Strength size Crush strength, lbs(kg) 3mm (1/8í¦) 200 (90) 6mm (1/4í¦) 450(205) 10mm (3/8í¦) 880 (400) 13mm(1/2í¦) 1870 (850) 19mm(3/4í¦) 2860(1300) 25mm(1í¦) 3740(1700) 30mm(1-1/4í¦) 3740(1700) 38mm(1-1/2í¦) 4840(2200) 50mm(2í¦) 5500 (2500).