Grundinformationen
- CAS
12057-24-8- Standard-SMILES
[Li+].[Li+].[O-2]- InChIKey
FUJCRWPEOMXPAD-UHFFFAOYSA-N- Summenformel
- Li2O
- Durchschnittliche Molmasse
- 29,9 g/mol
- Monoisotopische Masse
- 30,02692372
Namen und Bezeichner
- Bevorzugter Name
- Lithium oxide
- IUPAC
- dilithium;oxygen(2-)
- Lokaler Name
- Dilithiumoxid
- Englischer Name
- Lithium oxide
- Summenformel
- Li2O
- Molmasse
- 29.88
Namen und Synonyme
Lithium oxide12057-24-8Dilithium monoxideLithia2ON0O9YI0QLithium OxydatumRefChem:5958EINECS 235-019-5UNII-2ON0O9YI0QLithium monoxidedilithium;oxygen(2-)MFCD00016183
Weitere Namen anzeigen
Li2OKickeriteLithiumoxidOxydilithiumOxybislithiumoxydedelithiumdilithiumoxidelithiummonoxide
12142-77-7Lithium oxide (LiO)Lithium monooxideMonolithium monoxidelithium(I) oxideLithium Oxide (2/1)LITHIUM OXIDE [MI]SCHEMBL28778
Datenbank-Bezeichner
- CAS
12057-24-8、12142-77-7- PubChem CID
- 166630
- DTXSID
DTXSID90923799- UNII
- 2ON0O9YI0Q
- EC Number
- 235-019-5
Eigenschaften
Berechnete Struktureigenschaften
- Polarare Oberfläche (TPSA)
- 1 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 1
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 3
- Formalladung
- 0
- Komplexität
- 0
Experimentelle und physikochemische Eigenschaften
Chemical ClassesMetals -> Metals, Inorganic Compounds
SpringerMaterials Properties
crystal structure
dielectric constant
Density2.013 @25 °C
Melting Point1438 °C
Physical Description
Large Crystals; CBI
White hygroscopic solid; [CHEMINFO] White odorless powder; Decomposes in water; [MSDSonline]
Physikochemische Eigenschaften
- Schmelzpunkt
- 1427 °C · 1427°C
- Siedepunkt
- 2468.3 °C · 2468.3 °C
- Dichte
- 2.013 g/mL · 2.013 g/mL at 25 °C (lit.)
- Aggregatzustand
- Powder
- Wichte
- 2.013 · 2.013
- Farbe
- White
- Wasserlöslichkeit
- Soluble in water.
Sicherheit und Regulatorisches
Sicherheitsangaben dienen nur zur Orientierung und ersetzen weder das Sicherheitsdatenblatt (SDB) des Lieferanten noch geltende Vorschriften oder eine fachliche Bewertung.
GHS-Klassifizierung
GHS Classification
This chemical does not meet GHS hazard criteria for 16.7% (78 of 466) of reports.
Danger
H314 (76.2%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
P260, P261, P264, P264+P265, P271, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 466 reports by companies from 9 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Gefahrenhinweise
Regulatory Information
Chemical: Lithium oxide (Li2O)
Lithium oxide (Li2O) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Lithium oxide (Li2O) 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: 03-08-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/32760
Lithium oxide (Li2O): Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Hazards Summary
A corrosive substance that can cause pulmonary edema; [CHEMINFO] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; [MSDSonline] Lithium oxide forms lithium hydroxide, a corrosive, in the presence of moisture; Rats inhaling lithium combustion aerosols at 570-1500 mg/m3 for 14 days had coughing, respiratory distress, and showed predominantly laryngeal, but also pulmonary lesions; [AIHA] See Lithium.
Hazard Classes and Categories
Chemie und Industrie
Verwendung und Herstellung
Uses
Used as a carbon dioxide absorbent and to make specialty glasses and ceramics; [CHEMINFO] Produced along with lithium hydroxide when lithium-aluminum alloys are heated by welding or cutting; [AIHA]
Welding [Category: Weld]
Ceramics making [Category: Hobbies]
U.S. Production2023: 100,000 - <250,000 lb
Industry UsesDehydrating agent (desiccant)
General Manufacturing Information
Pharmaceutical and Medicine Manufacturing
Lithium oxide (Li2O): ACTIVE
Anwendungen
VerwendenLithium oxide is a strong alkali that absorbs carbon dioxide and water from the atmosphere. It is used in manufacturing ceramics and special types of glass.
Darstellung
synthetischeIndustrial and laboratory preparations. Only small volumes of material are prepared industrially. Both industrial and laboratory preparations require the thermal decomposition of lithium peroxide or of lithium hydroxide. Lithium peroxide, Li202 , is converted to lithium oxide, Li20, and oxygen by heating to 450° in a stream of helium gas. Thermal dehydration of lithium hydroxide is carried out at 675°C±10° under vacuum in a nickel container lined with silver foil. Lithium carbonate may be converted to lithium oxide and carbon dioxide by heating the material to 700°C under vacuum in a platinum boat. Industrial uses. There are no current industrial uses which consume large quantities of lithium oxide. Lithium oxide reacts with water as it dissolves to form a solution of lithium hydroxide. Lithium oxide is a strong base and reacts typically with acidic gases and liquids to form lithium salts. At elevated temperatures, lithium oxide also reacts with many solid nonmetal oxides (Si02, B2O3, etc.) and metal oxides (A1203 , Fe2C>3, etc.). High-temperature reactions are the basis for the fluxing action of lithium oxide, lithium hydroxide and lithium carbonate. Care must be taken to avoid the reaction of lithium oxide with reaction vessels at high temperatures.
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