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25 March 2009

PAH - Polycyclic Aromatic Hydrocarbons

The majority of people think these are only present in the Black Shades made from carbon.

This is not true.

PAHs are found in around 70% of the pigments we have analyzed and are a result of the synthesis of the products. They are, of course, also present in Black Pigments but here they are a result of general impurities of the carbon. Depending on which source of carbon is being used, the amounts can be dramatically high and well above the levels mentioned in the EU Resolution. Many pigments of various shades fail to meet the limits mentioned in the EU Resolution EU ResAP(2008)1.

25 March 2009. © CTL® Bielefeld GmbH

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