Stable, pourable pyrogenic silicon dioxide dispersion, wherein - the average, number-related aggregate diameter of the silicon dioxide particles in dispersion is less than 200 nm, the dispersion comprises - at least 35 wt.% of silicon dioxide powder, - 3 to 35 wt.% of at least one polyol, - 20 to 60 wt.% of water, - 0 to 10 wt.% of an additive, in each case based on the total amount of the dispersion, - and comprises a substance having an alkaline action in an amount such that a pH of 10 < pH ≤ 12 is established, the stable, pourable pyrogenic silicon dioxide dispersion is obtainable by a process comprising the following steps: - from a reservoir, water, at least one polyol and optionally an additive are circulated via a rotor/stator machine in an amount corresponding to the composition desired later, and - the amount of pyrogenic silicon dioxide powder desired for the dispersion is introduced via a filling device, continuously or discontinuously and with the rotor/stator machine running, into the shearing zone between the slits of the rotor teeth and the stator slits, the pH being less than 5 and optionally being adjusted by metering in of an acid, - the filling device is closed and dispersing is carried out further until the current uptake of the rotor/stator machine is largely constant, and - an amount of a substance having an alkaline action such that a pH of the dispersion of 10 < pH ≤ 12 results is then added, the substance having an alkaline action being added so rapidly that no gel formation takes place. - the average, number-related aggregate diameter of the silicon dioxide particles in dispersion is less than 200 nm, the dispersion comprises - at least 35 wt.% of silicon dioxide powder, - 3 to 35 wt.% of at least one polyol, - 20 to 60 wt.% of water, - 0 to 10 wt.% of an additive, in each case based on the total amount of the dispersion, - and comprises a substance having an alkaline action in an amount such that a pH of 10 < pH ≤ 12 is established, the stable, pourable pyrogenic silicon dioxide dispersion is obtainable by a process comprising the following steps: - from a reservoir, water, at least one polyol and optionally an additive are circulated via a rotor/stator machine in an amount corresponding to the composition desired later, and - the amount of pyrogenic silicon dioxide powder desired for the dispersion is introduced via a filling device, continuously or discontinuously and with the rotor/stator machine running, into the shearing zone between the slits of the rotor teeth and the stator slits, the pH being less than 5 and optionally being adjusted by metering in of an acid, - the filling device is closed and dispersing is carried out further until the current uptake of the rotor/stator machine is largely constant, and - an amount of a substance having an alkaline action such that a pH of the dispersion of 10 < pH ≤ 12 results is then added, the substance having an alkaline action being added so rapidly that no gel formation takes place. - from a reservoir, water, at least one polyol and optionally an additive are circulated via a rotor/stator machine in an amount corresponding to the composition desired later, and - the amount of pyrogenic silicon dioxide powder desired for the dispersion is introduced via a filling device, continuously or discontinuously and with the rotor/stator machine running, into the shearing zone between the slits of the rotor teeth and the stator slits, the pH being less than 5 and optionally being adjusted by metering in of an acid, - the filling device is closed and dispersing is carried out further until the current uptake of the rotor/stator machine is largely constant, and - an amount of a substance having an alkaline action such that a pH of the dispersion of 10 < pH ≤ 12 results is then added, the substance having an alkaline action being added so rapidly that no gel formation takes place.