In response to this subsequent comment:
I am concerned with the use of Safety Data Sheets produced by a third party. My understanding is we should obtain the SDS from the manufacturer. The only exception to this is if the manufacturer is no longer in business you can obtain a SDS of a similar product.
We confirm that SDSs must be obtained from the manufacturer, usually this is at the time of purchase. However as schools are likely to have chemicals for longer than 5 years and SDSs should be current and less than 5 years old, schools will need to update their SDSs accordingly. This can be done by contacting the manufacturer/ supplier, downloading from their website or by accessing the manufacturer's SDSs through a subscription to a commercial chemical management system such as Chemwatch.
In the event of the manufacturer no longer being in business you can obtain an Australian compliant generic SDS of the same chemical. In keeping with good housekeeping practice it is important to keep chemicals to a minimum. If the chemical is old it would be wise to confirm if the chemical is still required for the curriculum and if it is still in good condition. If not then we recommend that you dispose of the chemical.
Edited 30 November 2016: Further to this advice, where it is not possible to obtain an updated SDS prepared by an Australian manufacturer/importer, the most recent SDS must be kept. If you have any concerns regarding whether your SDS is compliant, then check with the work health and safety authority in your state/territory. For more information see a further question Third party Safety Data Sheets (SDSs)
General information on Safety Data Sheets (SDSs) can be found on the Safe Work Australia website, see: http://www.safeworkaustralia.gov.au/sites/swa/whs-information/hazardous-chemicals/sds/pages/sds