Grundinformationen
- Standard-SMILES
[Ce]- InChIKey
GWXLDORMOJMVQZ-UHFFFAOYSA-N- Summenformel
- Ce
- Durchschnittliche Molmasse
- 140,116 g/mol
- Monoisotopische Masse
- 139,9054387
Überblick
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.
Namen und Bezeichner
- Bevorzugter Name
- Cerium
- IUPAC
- cerium
- Englischer Name
- 1H-Imidazole polymer with 2-(chloromethyl)oxirane and morpholine
- Summenformel
- C10H18ClN3O2
- Molmasse
- 247.72
Namen und Synonyme
Weitere Namen anzeigen
Datenbank-Bezeichner
- CAS
109882-76-0、13864-02-3、7440-45-1- PubChem CID
- 23974
- DTXSID
DTXSID0058641- ChEBI
CHEBI:33369- UNII
- 30K4522N6T
- EC Number
- 231-154-9、629-690-7
- Nikkaji
- J643.975F、J74.585E
Eigenschaften
Berechnete Struktureigenschaften
- Polarare Oberfläche (TPSA)
- 0 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 0
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 1
- Formalladung
- 0
- Komplexität
- 0
Experimentelle und physikochemische Eigenschaften
Chemical Classes
Metals -> Rare Earth Metals
Flammable agents - 3rd degree
Melting Point
795 °C
799 °C
Physical Description
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
Physikochemische Eigenschaften
- InChI
- InChI=1S/C4H9NO.C3H5ClO.C3H4N2/c1-3-6-4-2-5-1;4-1-3-2-5-3;1-2-5-3-4-1/h5H,1-4H2;3H,1-2H2;1-3H,(H,4,5)
- InChIKey
- WRTGHLKTHCGYEB-UHFFFAOYSA-N
- SMILES
- C(C1OC1)Cl.C1NCCOC1.C1N=CNC=1
Sicherheit und Regulatorisches
GHS-Klassifizierung
GHS Classification
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
Gefahrenhinweise
Regulatory Information
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.)
DOT Label
Flammable Solid
Dangerous When Wet
Fire Hazards
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.
Health Hazards
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.
Hazards Summary
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.
Reactive Group
Metals, Elemental and Powder, Active
Metals, Elemental and Powder, Active
Reactivity Alerts
Strong Reducing Agent
Strong Reducing Agent
Reactivity Profile
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].
DOT Hazard Classification
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
Air and Water Reactions
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.
Sicherheit und Schutzausrüstung
Fire Fighting
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)]:
Accidental Release Measures
· 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.
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)]:
General First Aid:
Nonfire Spill Response
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)]:
Isolation and Evacuation
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
Protective Action Criteria (PAC)
30 [mg/m3]
330 [mg/m3]
2000 [mg/m3]
Personal Protective Equipment (PPE)
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)]:
Toxikologische Informationen
Sicherheitsdaten
- Alarmwort
- Warnung
- Gefahrenhinweise
- Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code H302
Chemie und Industrie
Verwendung und Herstellung
Uses
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]
General Manufacturing Information
Fabricated Metal Product Manufacturing
Cerium: ACTIVE
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