Abstract: Sterilising composition comprising a chemical reactive compound with a perfumery alcohol or phenol such as bleaching, scouring, chemical cleansing and sanitary sterilising, e.g. mobile toilet, compositions are perfumed by the incorporation therein of one or more monomeric or oligomeric titanium or zirconium esters of a perfumery alcohol or phenol. Preferred esters are monomeric titanate esters of formula Ti(OR).sub.4 where R is the residue of a perfumery alcohol or phenol. Said oligomers are prepared by hydrolysis of a monomeric titanate or zirconate ester with from 50 to 90 moles water per 100 moles monomeric ester. Said sterilising compositions provide controlled release of perfume by hydrolysis of said esters during use and exhibit reduced degradation of said perfumery alcohol or phenol during storage.