Registration Dossier

Guidance on Safe Use

Guidance on Safe Use

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Administrative data

First-aid measures

Inhalation: Mechanical irritation caused by dust in the airways: Remove person from Silicon - 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 further ingestion. See inhalation.

Fire-fighting measures

Silicon lumps are not combustible.
Specific fire & explosion hazards : Although flammability test under REACH (EC guideline) show silicon to be non flammable, small silicon particles (up to 40 micometer) can be ignited and propagate flame that extinguish quickly.
Addition of wet material to molten Silicon, may cause explosions due to formation of flammable hydrogen gas.
Silicon-particles suspended in air, may under certain conditions cause dust explosions.
The flammability and intensity of the blast increases gradually as particle size decreases.
Extinguishing media: Dry sand, CO2 or dry powder..

Accidental release measures

Avoid handling that generates dust build-up. Released material 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.
Silicon in the form of dry fine dust should be vacuumed, 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 Silicon may cause explosions due to formation of flammable hydrogen gas.
Avoid reactions with acids like hydrofluoric acid (HF) and nitric acid (HNO3) leading to the formation of toxic gases.
Storage: Keep dry.

Transport information

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Marine transport (UN RTDG/IMDG)

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Exposure controls / personal protection

Stability and reactivity

Disposal considerations