Synonyms
Ferrosilicon, with 30% or more but <90% silicon; [ChemIDplus] Ferrosilicon (30-90% Si); 50% FeSi; 65% FeSi; 75% FeSi; GLO 75 INEX; GLOINOC; 50% FeSi Low Al; 75% FeSi Foundry; [Globe Metallurgical MSDS] UN1408
Category
Metalloid Compounds (Silicon)
Description
Odorless metal; [CAMEO] Grey metallic solid; Insoluble in water; [Globe Metallurgical MSDS]
Sources/Uses
An alloy of iron and silicon; Used to add silicon to iron and steel and in magnesium processing; [CAMEO] Silicon content varies between 15 and 90 percent; Melting point depends on silicon content; Slowly produces hydrogen on contact with water; [Wikipedia]
Comments
Causes lung changes in 26-week intermittent inhalation studies of rats; [RTECS] A strong reducing agent; Reacts with water evolving hydrogen which may be ignited by the heat created by the reaction; [CAMEO] An eye, nose, and throat irritant; May cause smarting and reddening of skin if spilled and allowed to remain on clothes; Toxic by ingestion and inhalation; [CHRIS] Contains < 0.5% chromium and 0.1-2.5% aluminum; May produce small amounts of arsine, phosphine, and hydrogen on exposure to moisture; Dust may cause eye and respiratory tract irritation; [Globe Metallurgical MSDS]
Processes
Industrial Processes with risk of exposure: