Ferrosilicon

Metals -> Metalloid Compounds (Silicon)

Flammable agents - 2nd degree

Ferrosilicon appears as a solid alloy of iron and silicon. Used to add silicon to iron and steel. Ferrosilicon is an odorless, crystalline solid metal. It is flammable and can react explosively with oxidizing materials. In the presence of moisture or water it may emit toxic and explosive fumes. It is used in magnesium processing.

Odorless metal; [CAMEO] Grey metallic solid; Insoluble in water; [Globe Metallurgical MSDS]

Danger

H261 (100%): In contact with water releases flammable gas [Danger Substances and mixtures which in contact with water, emit flammable gases]

P231+P232, P280, P370+P378, P402+P404, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 68 reports by companies from 2 notifications to the ECHA C&L Inventory.

Not Classified

Not Classified

Ferrosilicon, with 30% or more but <90% silicon: Does not have an individual approval but may be used under an appropriate group standard

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Special Hazards of Combustion Products: Irritating vapors and toxic gases may be formed when involved in fire. (USCG, 1999)

· Produce flammable and toxic gases on contact with water.

Exposure can cause irritation of eyes, nose and throat. Toxic if inhaled or ingested. (USCG, 1999)

· Highly toxic: contact with water produces toxic gas, may be fatal if inhaled.

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]

Metals, such as FERROSILICON, are reducing agents and tend to react with oxidizing agents. Their reactivity is strongly influenced by their state of subdivision: in bulk they often resist chemical combination; in powdered form they may react very rapidly. Thus, as a bulk metal it is somewhat unreactive, but finely divided material may be pyrophoric. The metal reacts exothermically with compounds having active hydrogen atoms (such as acids and water) to form flammable hydrogen gas and caustic products. The reactions are less vigorous than the similar reactions of alkali metals, but the released heat can still ignite the released hydrogen. Materials in this group may react with azo/diazo compounds to form explosive products. These metals and the products of their corrosion by air and water can catalyze polymerization reactions in several classes of organic compounds; these polymerizations sometimes proceed rapidly or even explosively. Some metals in this group form explosive products with halogenated hydrocarbons.

Water-react. 2 (100%)

Not Classified

Not Classified

Substances and mixtures which, in contact with water, emit flamm - Category 3

Flammable agents - 2nd degree, Reactive agents - 2nd degree

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

Get medical attention.

General First Aid:

Excerpt from ERG Guide 139 [Substances - Water-Reactive (Emitting Flammable and Toxic Gases)]:

Immediate precautionary measure

An alloy of iron and silicon; Used to add silicon to iron and steel and in magnesium processing; [CAMEO]

Steel Producing [Category: Industry]