What impact will this have on the classification of mixtures (and substances containing impurities)?
What to do when a substance has a harmonized CLP classification?

If you need to classify and label a mixture, there are generally several methods available, depending on the type of information you have:

• use of mixture data;

• principle of extrapolation or classification based on the components of the mixture.

If you are relying on the components of the mixture and the mixture contains a substance with a harmonized classification, you must take this information into account. This is because the classification of the substance may determine the classification of the mixture for certain hazard classes.

The following information in Annex VI may also affect the classification of the mixture.

Specific Concentration Limits (SCLs)

You must compare the percentage of the...