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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 273-727-6 | CAS number: 69012-27-7 By-product of chromium refining containing oxides of aluminum, magnesium and silicon.
Endpoint summary
Administrative data
Description of key information
Acute toxicity of FeCr slags has not been tested. However acute toxicity test with silicates, kaolin, synthetic amorphous silica and chromium(III) oxide show very high LD50 values. Therefore it can be concluded that FeCr-silicate is not either acutely toxic.
Key value for chemical safety assessment
Acute toxicity: via oral route
Endpoint conclusion
- Dose descriptor:
- LD50
- Value:
- 5 000 mg/kg bw
Acute toxicity: via inhalation route
Endpoint conclusion
- Dose descriptor:
- LC50
- Value:
- 2 000 mg/m³
Acute toxicity: via dermal route
Endpoint conclusion
- Dose descriptor:
- LD50
- Value:
- 5 000 mg/kg bw
Additional information
The amorphous glass phase of FeCr-slag consists of practically insoluble silicates, and therefore it is seen justified to use read-across to studies on synthetic amorphous silica, calcium silicate, sodium aluminium silicate, kaolin (an Al-silicate) and nonfibrous glass (containing Ca-, Al, Mg- and borosilicates).
No test data on acute toxicity caused by FeCr slag was available. However, the available information on acute toxicity caused by insoluble silicates, kaolin, synthetic amorphous silica and chromium do not show any indications of being acutely toxic. Based on read-across from these substances, FeCr slag has not either any acutely toxic effects.Due to the poor solubility of FeCr slag, systemic absorption via the oral route is not relevant, and therefore acute toxicity via the dermal route is extremely unlikely.
Justification for classification or non-classification
No classification is proposed. LD50 values of substances used for read-across are generally >5000 mg/kg bw.
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.
