Cerium

Metals -> Rare Earth Metals

Flammable agents - 3rd degree

795 °C

799 °C

Cerium is a gray colored, ductile solid. This form of cerium is slabs, ingots or rods. When heated to high temperatures it will burn readily and may be difficult to extinguish. It is used to make signaling devices.

Cerium, turnings or gritty powder appears as a gray metallic solid. Specific gravity 6.78. Turnings or gritty powder. Contact may burn skin, eyes or mucous membranes. May be toxic by ingestion, inhalation or skin absorption. Used to make other chemicals.

Large Crystals; Other Solid

Gray solid; [CAMEO] Ceric salts: yellow or red-orange; Cerous salts: usually white; [Reference #1] Ductile and highly reactive; Readily oxidizes; [Hawley]

Solid

This chemical does not meet GHS hazard criteria for 2.2% (11 of 502) of reports.

Danger

H228 (96.4%): Flammable solid [Danger Flammable solids]

P210, P240, P241, P280, and P370+P378 (click each P-code to see the statement)

Aggregated GHS information provided per 502 reports by companies from 12 notifications to the ECHA C&L Inventory.

Warning

Chemical: Cerium

Cerium is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Cerium are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 06-10-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/1986

Cerium: 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.)

Flammable Solid

Dangerous When Wet

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

· Produce flammable gases on contact with water.

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

· Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death.

Reacts violently with water and produces flammable gas on contact with moist air; May produce corrosive solutions; [CAMEO] Oxidizes readily in air at room temperature; Pure metal may ignite if scratched with a knife; [Reference #1] See RARE EARTH METALS and linked occupational diseases.

Metals, Elemental and Powder, Active

Metals, Elemental and Powder, Active

Strong Reducing Agent

Strong Reducing Agent

CERIUM is a strong reducing agent. Resembles aluminum in its chemical properties. [Lewis]. Reactivity is enhanced by a state of high physical subdivision, as in TURNINGS OR GRITTY POWDER. Attacked by dilute and concentrated mineral acids and alkalis with the generation of flammable gases. Readily oxidized by moist air at room temperature. Reacts with zinc with explosively violence. Gives very exothermic reactions with antimony or bismuth. Reacts violently with phosphorus at 400-500 °C [Mellor 8, Supp. 3:347 1971].

CERIUM is a strong reducing agent. Resembles aluminum in its chemical properties. [Lewis]. Reactivity is enhanced by a state of high physical subdivision, as in TURNINGS OR GRITTY POWDER. Attacked by dilute and concentrated mineral acids and alkalis with the generation of flammable gases. Readily oxidized by moist air at room temperature. Reacts with zinc with explosive violence. Gives very exothermic reactions with antimony or bismuth. Reacts violently with phosphorus at 400-500 °C [Mellor 8, Supp. 3:347 1971].

Cerium, slabs, ingots, or rods

UN1333

Div 4.1 Flammable solid (49 eCFR § 173.124)

PG II: the degree of danger presented by the material is medium

Cerium, turnings or gritty powder

UN3078

Finely divided metal powder is pyrophoric [Bretherick 1979 p. 170-171]. This material will react vigorously if exposed to water or moist air and will generate flammable and/or toxic fumes.

Finely divided cerium powder is pyrophoric [Bretherick 1979 p. 170-171]. Can react vigorously if exposed to water or moist air and will generate flammable fumes.

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

· 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.

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

General First Aid:

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

Immediate precautionary measure

30 [mg/m3]

330 [mg/m3]

2000 [mg/m3]

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

Used in metal alloys, in polishing agents, and in glass; [Ullmann] Sources: most abundant of the rare earth metals, it is obtained mainly from monazite, and bastnasite mineral deposits. Large deposits are found in India, Brazil, and the United States. Uses: to manufacture flints for cigarette lighters (misch metal); to make incandescent gas mantles, self-cleaning ovens, carbon arc lighting, and glass; as an analytical reagent (Cerium sulfate); to polish glass (Cerium oxide); and as a catalyst in petroleum refining; [Reference #1]

Steel Producing [Category: Industry]

Glassblowing [Category: Hobbies]

Fabricated Metal Product Manufacturing

Cerium: ACTIVE