Low Polycyclic Aromatic Hydrocarbons (PAH)

Carbon black is a substantial component of most rubber goods, playing an important role in the processing of rubber compounds by delivering a variety of performance properties to the end-use product.

Actions have been taken by both regulators in the European Union (EU) and by businesses to reduce the concentration of polycyclic aromatic hydrocarbons (PAH) in rubber products including consumer goods such as sporting equipment, household items, tools, clothing, footwear, and accessories, as well as toys and childcare items. In addition, regulations in China (CN) and the Netherlands (NL) restrict the PAH content and toluene extraction for carbon blacks used in rubber parts that come into contact with food (CN) or drinking water (NL).

In response to these changing marketplace requirements, we offer a low PAH carbon black series to not only help you comply with these new regulations, but also meet stringent performance requirements for end-use products. As of August 1, 2018, we are upgrading the specification for Benzo(a)pyrene content in our LP series of Low PAH carbon blacks from 1,0 ppm max to 0,25 ppm max.

Chart showing Max PAH Value in relation to Content, Test Method, and Units. Cabot internal test method requires 48 hours toluene extraction (Soxhlet) 1. Content: Benzo(a)pyrene. Test method: Cabot internal test. Units: ppm. Max value: 0.25. 2. For each of 8 PAH included in EU list. Test method: Cabot internal test. Units: ppm. Max value: 1. 3. For sum of 18 PAH included in GS Mark list. Test method: Cabot internal test. Units: ppm. Max value: 20.