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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 912-631-7 | CAS number: 12022-95-6
Guidance on Safe Use
Administrative data
First-aid measures
Inhalation: Mechanical irritation caused by dust in the airways: Remove person from dust-exposed area.
Skin contact: Wash skin with water and/or a mild detergent.
Eye contact: Rinse eyes with water/saline solution. See a physician upon persistent discomfort.
Ingestion: Remove source of for further ingestion. See inhalation.
Fire-fighting measures
FeSi lumps or granules are not combustible.
Specific fire & explosion hazards : Flammability test under REACH (EC guideline) show FeSi to be non flammable.
Although UN- test on flammability in contact with water was negative, wet material added to molten (hot) ferrosilicon may cause explosions due to formation of flammable hydrogen gas..
FeSi-particles suspended in air may under certain conditions cause dust explosions.
Extinguishing media: Dry sand, CO2 or dry powder.
Accidental release measures
Material in the form of dust should be collected in suitable containers. Damp or wet product must be kept away from dry, and must not be collected and stored in closed containers.
Ferrosilicon in the form of dust should be vacuumed by using a spark proof vacuuming system, rather than swept up
Handling and storage
Handling: Avoid generation of dust. Wear protective clothing, gloves, and goggles. Wear suitable respiratory protection where applicable
Avoid generating sparks or other ignition sources (e.g. welding) in areas with high dust concentrations.
Addition of wet material to molten ferrosilicon may cause explosions due to formation of flammable hydrogen gas.
Avoid reactions with acids like hydrofluoric acid (HF) and nitric acid (HNO3) leading that lead to the formation of toxic gases.
Storage: Keep dry and in a well ventilated place and away from acids and bases.
Transport information
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Marine transport (UN RTDG/IMDG)
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Exposure controls / personal protection
Stability and reactivity
Disposal considerations
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.
