The Association of Petrochemicals Producers in Europe (APPE), The European petrochemical industry, Glossary of Terms on Chemical Safety for Use in IPCS Publications, van Nieuwenhuyse, Brussels 2006. http://www.petrochemistry.eu/glossary.html, (Petrochem Ind - Brit) {473}
Canadian Centre for Occupational Health and Safety CCOHS, Chemicals & Materials Safety Data Sheet MSDS - An Explanation of Common Terms, Ontario, Canada 2013. http://www.ccohs.ca/oshanswers/chemicals/glossary/ msds_gloss_a.html, (Common MSDS Terms Used in Occupn Hlth and Sfty - Canad) {630}