We are offering aluminium oxide active acidic for column chromatography according to brockmann activity i, ii ai2o3 m.w. 101.96 ph value 3.5-5.0 wt. Per ml (approximately) 0.9g particle size 70-230 mesh cas no. 1344 - 28 - 1 un no. Nr tariff : 2818 20 90 s : 22 f :