The invention provides high purity 3-aminopropylmethylsiloxanes of the general formulae: ##STR1## wherein each R may be the same or different aryl group, or monovalent straight or branched chain alkyl group having from 1 to about 18 carbon atoms, Me is methyl, and x may range from about 3 to about 5, the process comprising hydrosilylating allylamine with a monohydridomethylsiloxane of the general formulae: ##STR2## wherein each R may be the same or different aryl group, or monovalent straight or branched chain alkyl group with 1 to about 18 carbon atoms, and x may range from about 3 to about 5, in the presence of a neutral platinum catalyst.