EVONIK CORPORATION › AEROSIL® OX 50 AEROSIL® OX 50 $0.00 AEROSIL® OX 50 is a fumed silica with a very low specific surface area. Therefore, high loadings can be achieved. Quantity: Add To Cart Added! AEROSIL® OX 50 is a fumed silica with a very low specific surface area. Therefore, high loadings can be achieved. You Might Also Like AEROSIL® R 711 AEROSIL® 200 F AEROSIL® R 202 AEROSIL® R 972 V AEROSIL® 200 V