EVONIK CORPORATION › AERODISP® W 7512 S AERODISP® W 7512 S $0.00 AERODISP® W 7512 S is a water based, low viscosity dispersion of AEROSIL® fumed silica, with a slightly acidic pH. Quantity: Add To Cart Added! AERODISP® W 7512 S is a water based, low viscosity dispersion of AEROSIL® fumed silica, with a slightly acidic pH. You Might Also Like AERODISP® WK 341 AERODISP® W 1714 AERODISP® W 7622 AERODISP® W 7520