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. Quantity: 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® RX 50 AEROSIL® R 8200 AEROSIL® 380 AEROSIL® R 7200 AEROSIL® R 812 S