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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 308-551-1 | CAS number: 98072-94-7 Natural ilmenite ore is concentrated by selective removal of impurities, chiefly iron, to yield a product enriched in titanium dioxide. The process consists of an optional oxidative roast followed by a reductive roasting stage, an acidic leaching stage and washing and drying the product. Alternatively the process consists of selectively chlorinating the iron oxide present in the reduced ore.
Toxicity to soil microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
No reliable data are available for the effect of synthetic rutile on soil microorganisms and read-across to upgraded ilmenites (UGI) is used. Reliable chronic toxicity data are available for the effect of upgraded ilmenite slags (>80% TiO2) to the nitrification activity in a natural soil. The lowest NOEC was 10,000 mg/kg dw (observed for the UGI slag RBM SO4).
Key value for chemical safety assessment
- Long-term EC10 or NOEC for soil microorganisms:
- 10 000 mg/kg soil dw
Additional information
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.
