Changes to Commission Directive 91/442/EEC of 23 July 1991 on dangerous preparations the packaging of which must be fitted with child-resistant fastenings
EU Directive 1991/442
Made by Commission Directive 96/65/EC of 11 October 1996 adapting to technical progress for the fourth time Council Directive 88/379/EEC on the approximation of the laws, regulations and administrative provisions of the Member States relating to the classification, packaging and labelling of dangerous preparations and modifying Directive 91/442/EEC on dangerous preparations the packaging of which must be fitted with child-resistant fastenings
From legislation.gov.uk's record of changes, the official one: see it there.