Substance Information

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New Data Availability System

A new Data Availability System is being developed by ECHA. To begin with this system will take over the responsibility of making REACH registration data available, once it is ready. We expect the first version to be publicly available by the end of January 2024.

Since ECHA aims to devote our maximum effort to this new system, we can no longer maintain REACH registration data on the current Dissemination Platform. As such once the IUCLID format change begins on 19th May 2023 we will no longer update REACH registered substance factsheets. The factsheets will remain online, but will not be updated.

As a consequence, REACH registration data will likewise not be updated in Infocards, Brief Profiles, the Advanced search, or the Nanomaterials on the EU market portal. We will inform you of what you can expect in the new System, along with details of when and where to find it.

We appreciate your understanding in the meantime.

Substance Infocard


Polycyclic aromatic hydrocarbons (PAH)

EC / List no.: -

CAS no.: -

Mol. Formula:

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Key datasets


Regulatory context

Here you can find all of the regulations and regulatory lists in which this substance appears, according to the data available to ECHA. This substance has been found in the following regulatory activities (directly, or inheriting the regulatory context of a parent substance):

REACH - Registration, Evaluation, Authorisation and Restriction of Chemicals Regulation
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Substance names and other identifiers

Regulatory process names
Polycyclic aromatic hydrocarbons (PAH)
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Group members

This entry / group of substance has the following member substances:

Results list is empty
Name EC / List no. CAS no. Association
Benzo[ghi]perylene 205-883-8 191-24-2 Official source
Pyrene 204-927-3 129-00-0 Official source
Indeno[1,2,3-cd]pyrene 205-893-2 193-39-5 Official source
Benzo[j]fluoranthene 205-910-3 205-82-3 Official source
Benzo[e]acephenanthrylene 205-911-9 205-99-2 Official source
Fluoranthene 205-912-4 206-44-0 Official source
Benzo[k]fluoranthene 205-916-6 207-08-9 Official source
Acenaphthylene 205-917-1 208-96-8 Official source
Chrysene 205-923-4 218-01-9 Official source
Benzo[def]chrysene 200-028-5 50-32-8 Official source
Dibenz[a,h]anthracene 200-181-8 53-70-3 Official source
Benz[a]anthracene 200-280-6 56-55-3 Official source
Acenaphthene 201-469-6 83-32-9 Official source
Phenanthrene 201-581-5 85-01-8 Official source
Fluorene 201-695-5 86-73-7 Official source
Naphthalene 202-049-5 91-20-3 Official source
Anthracene 204-371-1 120-12-7 Official source
Benzo[e]pyrene 205-892-7 192-97-2 Official source