A precipitated silica having the following physico-chemical characteristics: TABLE-US-00001 pH (5% in water) (ISO 787-9) 3 8 BET surface area (DIN 66131) (m.sup.2/g) 400 600 DBP absorption value (DIN 53601, (g/100 g) 380 420 in relation to dried substance) Tapped density (ISO 787-11) (g/l) 100 200 ALPINE sieve residue > 63.mu. (ISO 8130-1) (%) 0.1 40.