... Index: Pigment red 101 (77491) Chemical Formula: Fe2O3, CAS No.: 1309-37-1 Relative molecular weight: The HNKW Iron Oxide Red has ... a high quality and a competitive priceIron Oxide RedColor Index: Pigment red 101 (77491) ... ,120,130A,130B,130S,130P,230,140,180,190PropertyIron Oxide RedDensity5.24g/cm3Chroma(Standard comparison)SimilarFe2O3(min)95Water %1 ...