If the classification of a substance or mixture
changes, it is important that you understand
the reason for this, as it may impact on the
risk management measures that you choose.
Classifications may change for several reasons.
‣ The hazard data are still the same, but
CLP classification criteria result in a
different classification.
‣ New hazard information has been identified,
e.g. through REACH and the substance
or mixture is more/less hazardous than
previously thought.
‣ A mixture has been reformulated with
different component substances that have
different hazards.
Until at least 1 June 2015 suppliers will have to
provide classifications under the old DSD/DPD and
the CLP system in the SDS, so any fundamental
change of classification from new information