AS 2879.1-2000

Sets out a method for the determination of loss of mass on heating of aluminium oxide at 300 degrees Celsius and further loss of mass on ignition at 1000 degrees Celsius. This method is suitable for calcined alumina in the range 0.2 percent to 5 percent loss of mass at 300 degrees Celsius and 0.1 percent to 2 percent loss of mass at 1000 degrees Celsius.

This Standard sets out a method for the determination of loss of mass on heating of aluminium oxide at 300°C and further loss of mass on ignition at 1000°C. By industry convention, these mass losses are often referred to as ‘moisture’ (MOI) and ‘loss on ignition’ (LOI) respectively.This method is suitable for calcined alumina in the range 0.2% to 5% loss of mass at 300°C and 0.1% to 2% loss of mass at 1000°C.This method provides for samples to be treated on an ‘as-received’ basis for determination of actual MOI and LOI in alumina samples. To improve precision of analysis in cases where ‘as-received’ results are not required, samples can be ‘air-equilibrated’ prior to analysis. ‘Air-equilibration’ can greatly affect MOI results and significantly alter LOI results. The ‘air-equilibration’ procedure and its affects are discussed in Appendix A.Instrumental methods are also discussed.

First published as AS 2879-1986.
Revised and redesignated as AS 2879.1-2000.