EVONIK CORPORATION › AEROSIL® R 974 AEROSIL® R 974 $0.00 AEROSIL® R 974 is a hydrophobic-fumed silica after treated with DDS (dimethyldichloro/silane). Add To Cart Added! AEROSIL® R 974 is a hydrophobic-fumed silica after treated with DDS (dimethyldichloro/silane). You Might Also Like AEROSIL® TT 600 AEROSIL® 300 AEROSIL® R 7200 AEROSIL® RX 200 AEROSIL® R 202
