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® 300 V AEROSIL® R 805 AEROSIL® 200 V AEROSIL® R 7200 AEROSIL® 200 VS