The Aust Government's Department of the Environment and Heritage has put together this useful and comprehensive resource on chemicals. Categories of information are: Household Chemicals, Exposure & Safety, Chemicals by Name, Chemicals and Environment, Chemicals in Agriculture, Chemicals and Human Health, Regulators and Legislation, Main Organisations, International Portals, Chemical Databases, Business, Hobbies and Arts, and Education and Research.
W: http://www.deh.gov.au/chemicals-gateway.