References

	http://www.unece.org/trans/danger/publi/ghs/pictograms.html http://www.unece.org/trans/danger/publi/ghs/ghs_rev02/02files_e.html http://www.port-tauranga.co.nz/Shipping-Information/Dangerous-Goods-Information/Dangerous-Goods-IMDG-Code/ http://www.engineeringtoolbox.com/index.html http://ntp.niehs.nih.gov/pubhealth/roc/roc13/index.html https://www.osha.gov/SLTC/carcinogens/ http://ncis.nier.go.kr/ghs/hcs/en/search/search_en_01.jsp http://www.acgih.org/forms/store/CommercePlusFormPublic/search?action=Feature http://monographs.iarc.fr/ENG/Classification/index.php https://www.osha.gov/dsg/annotated-pels/index.html https://www.osha.gov/dsg/hazcom/global.html http://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX:32006R1907 http://ec.europa.eu/growth/sectors/chemicals/classification-labelling/index_en.htm https://chesar.echa.europa.eu/vi/web/guest/information-on-chemicals http://echa.europa.eu/web/guest/regulations/clp http://www.reagent.co.uk/chemical-glossary/#clpregs http://www.ilpi.com/msds/osha/1910_1200.html#1910.1200%28f%29 https://www.amherst.edu/offices/enviro_health_safety?_ga=1.181843488.649014412.1446965169 http://www.icao.int/safety/Pages/default.aspx https://www.transportation.gov/regulations Merck Index 12