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.

Updated: A new German Geprüfte Sicherheit (GS Mark) specification AfPS GS 2019:01 for polycyclic aromatic hydrocarbons (PAHs) in the European Union (EU) will be effective on July 1, 2020. Germany also has recently updated its Umwelt Bundesamt (UBA) guideline for drinking water and a revision of BfR (Budesinstitut für Risikobewertung) Recommendations on Food Contact Materials is in progress.

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 plastic or rubber parts sold in the EU after December 27, 2015. These rubber and plastic articles include a variety of 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 and guidelines and recommendations in EU countries are in place or in progress that restrict the PAH content and toluene extraction for carbon blacks used in rubber parts that come into contact with food, and the PAH content for carbon blacks that come into contact with drinking water.

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. 

 

PAH CONTENT *

TEST METHOD

UNITS

MAX VALUE

Benzo(a)pyrene

Cabot internal test

ppm

0.25

For each of 8 PAH included in EU list

Cabot internal test

ppm

1

For sum of 18 PAH included in GS Mark list**

Cabot internal test

ppm

20

* Cabot internal test method requires 48 hours toluene extraction (Soxhlet)

** For products certified after July 1, 2020, GS Mark has reduced the list of PAH to 15. Cabot will continue to report the sum of 18 PAH, which covers all GS Mark certifications.