http://www.legislation.gov.uk/nisr/2009/238/schedule/3/part/II/paragraph/3n3/madeThe Chemicals (Hazard Information and Packaging for Supply) Regulations (Northern Ireland) 2009Hazardous substancesSafetyHealth and safety at workEuropean ParliamentDescription of goodsGovernment Printer for Northern Ireland2018-02-23HEALTH AND SAFETYSCHEDULE 3PROVISIONS FOR CLASSIFYING DANGEROUS PREPARATIONSPART IICONCENTRATION LIMITS TO BE USED IN THE EVALUATION OF HEALTH HAZARDSSevere effects after repeated or prolonged exposure3