Substance Information
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
2,2',5,6'-Tetrabromodiphenyl ether
EC / List no.: -
CAS no.: 446254-25-7
Mol. Formula:

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):
- ECHA Legislations
- Occupational Exposure limits (OELs)
- Emission Limit Values (ELVs)
- Other chemical legislations
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ROHS - Exemptions from Article 4(1) Restrictions, Annexes III & IVEU. Exemptions from Art. 4(1) Restrictions (Annexes III & IV), Directive 2011/65/EU (RoHS), as amended by Directive (EU) 2023/1437, OJ L 176, 11 July 2023
This list contains the application exemptions listed in Annexes III and IV to RoHS (2011/65/EU). Annex III contains applications exempted from the restriction in Article 4(1), while Annex IV lists applications exempted from the restriction in Article 4(1) specific to medical devices and monitoring and control instruments.
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ROHS Directive - Restricted Substances as per Article 4(1), Annex IIEU. Restricted Substances Referred to in Article 4(1) (Annex II), Directive 2011/65/EU (RoHS), as amended by Directive 2015/863/EU, 4 June 2015
This list contains the substances listed in Annex II to the Directive on the restriction of hazardous substances in electrical and electronic equipment (RoHS - 2011/65/EU). Restricted per Art. 4(1) of RoHS, each listed substance includes a maximum concentration value tolerated by weight in homogeneous materials.

Substance names and other identifiers

This substance has been identified as member of the following groups of substances:
Name | EC / List no. | CAS no. | Association |
---|---|---|---|
Polybrominated diphenyl ethers, includes Penta, Octa, and Decabromodiphenyl ethers (PBDEs) | - | - | Expert judgement |