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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 234-679-1 | CAS number: 12023-27-7
Toxicity to terrestrial plants
Administrative data
Link to relevant study record(s)
Description of key information
No data are available on the effects of diiron titanium pentaoxide on terrestrial organisms. However, in accordance with section 1 of REACH Annex XI, studies on terrestrial organisms do not need to be conducted, as the substance is inert mixture of inorganic oxides of iron and titanium and based upon the physic-chemical properties and low bioavailability of the substance.
The substances is, according to the transformation and dissolution test highly insoluble in water and does not have a potential for adsorption. Furthermore, oxides of iron or titanium from natural sources, occur in sediments.
Synthetic diiron titanium pentaoxide have no relevant effect on the levels and bioavailabilities of these elements. Even under worst case conditions an inhibitory effect of diiron titanium pentaoxide is not likely to be exerted on soil organisms.
In accordance with section 1 of REACH Annex XI, the study does not need to be conducted. Iron and titanium are common elements in the earth's crust and can be found in both the terrestrial as sediment environment. The relative contribution of anthropogenic sources to the existing natural pools in soils and sediments are therefore not relevant, neither in terms of added amounts nor in terms of toxicity. Based on these exposure considerations additional sediment and/or soil testing is not warranted.
Key value for chemical safety assessment
Additional information
In accordance with section 1.2 of Annex XI to Regulation (EC) No 1907/2006 (REACH) no study on toxicity to terrestrial plants has to be conducted as there is sufficient weight of evidence from several independent sources of information for the read across source substances leading to the conclusion that the target substance diiron titanium pentaoxide is not toxic soil organisms including microbes, plants and invertebrates.
In the public ECHA REACH dossier for the structural analogues titanium dioxide and diiron trioxide (last accessed on: 18 March 2020) it is concluded that the substances are not toxic to to soil organisms including microbes, plants and invertebrates. The target substance diiron titanium pentaoxide is a mixed oxide of titanium dioxide and diiron trioxide. The source substances share the common atoms Ti, O and Fe with the target substance and have very similar physicochemical properties (for further information please refer to the read across justification attached to IUCLID section 13). Therefore, by applying an analogue approach, diiron titanium pentaoxide is not considered to be toxic to terrestrial plants and additional studies are thus scientifically not necessary.
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.
