EVONIK CORPORATION › AEROSIL® 300 V AEROSIL® 300 V $0.00 AEROSIL® 300 V acts as a rheology modifier. It exhibits optimal dispersion yielding best results in pronounced thickening and thixotropy. Add To Cart Added! AEROSIL® 300 V acts as a rheology modifier. It exhibits optimal dispersion yielding best results in pronounced thickening and thixotropy. You Might Also Like AEROSIL® R 106 AEROSIL® RX 200 AEROSIL® 380 AEROSIL® 200 AEROSIL® R 974