Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 931-334-3 | CAS number: -
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
- Conclusions:
- In accordance with REACH Annex XI, the identification of degradation products study (required in section 9.2.3) does not need to be conducted as 'Activated carbon' is a glassy material. It is not soluble in water and has a particle size between 0.5 to >0.5 µm. Therefore it is not expected to pass cell membranes to become accessible for enzymatic attack and thus enzymatic oxidation. But furthermore, the oxidation (mineralisation) of organic substances is accomplished by electron transfer from the electron donor (substance) to the electron acceptor. During biological substrate oxidation, mostly two electrons are transferred at the time, and two protons (H+) are split from the substrate (dehydrogenation). The hydrogen is transferred to NAD or NADP (acceptor) as part of the respiration chain (e.g., citric acid cycle). The substance activated carbon does not contain any hydrogen available for dehydrogenation; thus there is no energy gain by enzymatic dehydrogenation, so further biodegradation of this molecule will not occur. Therefore a test on the biodegradability is scientifically not justified.
- Executive summary:
In accordance with REACH Annex XI, the identification of degradation products study (required in section 9.2.3) does not need to be conducted as 'Activated carbon' is a glassy material. It is not soluble in water and has a particle size between 0.5 to >0.5 µm. Therefore it is not expected to pass cell membranes to become accessible for enzymatic attack and thus enzymatic oxidation. But furthermore, the oxidation (mineralisation) of organic substances is accomplished by electron transfer from the electron donor (substance) to the electron acceptor. During biological substrate oxidation, mostly two electrons are transferred at the time, and two protons (H+) are split from the substrate (dehydrogenation). The hydrogen is transferred to NAD or NADP (acceptor) as part of the respiration chain (e.g., citric acid cycle). The substance activated carbon does not contain any hydrogen available for dehydrogenation; thus there is no energy gain by enzymatic dehydrogenation, so further biodegradation of this molecule will not occur. Therefore a test on the biodegradability is scientifically not justified.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
