Hydrosilylation-crosslinkable compositions containing aliphatically unsaturated organopolysiloxanes produced by reaction of (i) alkali metal salts of silanols of general formula R a R 1 b 3-p Si p and/or condensation products thereof, with the proviso that in component (i) the average molar ratio of alkali metal:silicon is 0.10 to 2.00, with (ii) chlorosilanes of general formula R 7 r R 8 R 9 t SiCl, wherein M represents alkali metal cation, R and R 7 independently of one another may be identical or different and represent alkyl radicals, R 8 may be identical or different and represents monovalent hydrocarbon radicals having aliphatic carbon-carbon multiple bonds, R 1 and R 9 independently of one another may be identical or different and represent aromatic hydrocarbon radicals free from aliphatic carbon-carbon multiple bonds, a is 0 or 1, b is 0 or 1, with the proviso that a+b=1, p is 1, 2 or 3, r is 0, 1, 2 or 3 and t is 0, 1 or 2, with the proviso that r+t=2, with the proviso that siliconate component (i) and/or the chlorosilanes (ii) of formula comprise at least one aromatic hydrocarbon radical free from aliphatic carbon-carbon multiple bond, organosilicon compounds having two Si-bonded hydrogen atoms and catalyst which promotes addition of Si-bonded hydrogen onto aliphatic multiple bond. aliphatically unsaturated organopolysiloxanes produced by reaction of (i) alkali metal salts of silanols of general formula R a R 1 b 3-p Si p and/or condensation products thereof, with the proviso that in component (i) the average molar ratio of alkali metal:silicon is 0.10 to 2.00, with (ii) chlorosilanes of general formula R 7 r R 8 R 9 t SiCl, wherein M represents alkali metal cation, R and R 7 independently of one another may be identical or different and represent alkyl radicals, R 8 may be identical or different and represents monovalent hydrocarbon radicals having aliphatic carbon-carbon multiple bonds, R 1 and R 9 independently of one another may be identical or different and represent aromatic hydrocarbon radicals free from aliphatic carbon-carbon multiple bonds, a is 0 or 1, b is 0 or 1, with the proviso that a+b=1, p is 1, 2 or 3, r is 0, 1, 2 or 3 and t is 0, 1 or 2, with the proviso that r+t=2, with the proviso that siliconate component (i) and/or the chlorosilanes (ii) of formula comprise at least one aromatic hydrocarbon radical free from aliphatic carbon-carbon multiple bond, (i) alkali metal salts of silanols of general formula R a R 1 b 3-p Si p and/or condensation products thereof, with the proviso that in component (i) the average molar ratio of alkali metal:silicon is 0.10 to 2.00, with (ii) chlorosilanes of general formula R 7 r R 8 R 9 t SiCl, wherein M represents alkali metal cation, R and R 7 independently of one another may be identical or different and represent alkyl radicals, R 8 may be identical or different and represents monovalent hydrocarbon radicals having aliphatic carbon-carbon multiple bonds, R 1 and R 9 independently of one another may be identical or different and represent aromatic hydrocarbon radicals free from aliphatic carbon-carbon multiple bonds, a is 0 or 1, b is 0 or 1, with the proviso that a+b=1, p is 1, 2 or 3, r is 0, 1, 2 or 3 and t is 0, 1 or 2, with the proviso that r+t=2, with the proviso that siliconate component (i) and/or the chlorosilanes (ii) of formula comprise at least one aromatic hydrocarbon radical free from aliphatic carbon-carbon multiple bond, and/or condensation products thereof, with the proviso that in component (i) the average molar ratio of alkali metal:silicon is 0.10 to 2.00, with (ii) chlorosilanes of general formula M represents alkali metal cation, R and R 7 independently of one another may be identical or different and represent alkyl radicals, R 8 may be identical or different and represents monovalent hydrocarbon radicals having aliphatic carbon-carbon multiple bonds, R 1 and R 9 independently of one another may be identical or different and represent aromatic hydrocarbon radicals free from aliphatic carbon-carbon multiple bonds, a is 0 or 1, b is 0 or 1, with the proviso that a+b=1, p is 1, 2 or 3, r is 0, 1, 2 or 3 and t is 0, 1 or 2, with the proviso that r+t=2, with the proviso that siliconate component (i) and/or the chlorosilanes (ii) of formula comprise at least one aromatic hydrocarbon radical free from aliphatic carbon-carbon multiple bond, organosilicon compounds having two Si-bonded hydrogen atoms and catalyst which promotes addition of Si-bonded hydrogen onto aliphatic multiple bond.