基本情報
- CAS
12057-24-8- 標準SMILES
[Li+].[Li+].[O-2]- InChIKey
FUJCRWPEOMXPAD-UHFFFAOYSA-N- 分子式
- Li2O
- 平均分子量
- 29.9 g/mol
- 単同位体質量
- 30.02692372
名称と識別子
- 優先名称
- Lithium oxide
- IUPAC
- dilithium;oxygen(2-)
- 現地名
- オキシビスリチウム
- 英語名
- Lithium oxide
- 分子式
- Li2O
- 分子量
- 29.88
名称と別名
Lithium oxide12057-24-8Dilithium monoxideLithia2ON0O9YI0QLithium OxydatumRefChem:5958EINECS 235-019-5UNII-2ON0O9YI0QLithium monoxidedilithium;oxygen(2-)MFCD00016183
名称をさらに表示
リチウムオキシドオキシ二リチウムオキシビスリチウム酸化リチウム酸化リチウム, 99.5% (metals basis)Li2OKickeriteLithiumoxidOxydilithiumOxybislithiumoxydedelithiumdilithiumoxidelithiummonoxide
12142-77-7Lithium oxide (LiO)Lithium monooxideMonolithium monoxidelithium(I) oxideLithium Oxide (2/1)LITHIUM OXIDE [MI]SCHEMBL28778
データベース識別子
- CAS
12057-24-8、12142-77-7- PubChem CID
- 166630
- DTXSID
DTXSID90923799- UNII
- 2ON0O9YI0Q
- EC Number
- 235-019-5
物性
構造計算による物性
- 極性表面積
- 1 Ų
- 水素結合供与体数
- 0
- 水素結合受容体数
- 1
- 回転可能結合数
- 0
- 重原子数
- 3
- 形式電荷
- 0
- 複雑度
- 0
実験および物理化学的性質
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]
物理化学的性質
- 融点
- 1427 °C · 1427°C
- 沸点
- 2468.3 °C · 2468.3 °C
- 比重(密度)
- 2.013 g/mL · 2.013 g/mL at 25 °C (lit.)
- 外見
- 粉
- 比重
- 2.013 · 2.013
- 色
- 白い
- 水溶解度
- 水に溶ける。
- 比熱容量
- 1.81 J/ · Cp(crystal): 1.81 J/(g·K), at 25℃
- 晶系
- 立方
- Merck
- 14 · 14,5538
- 空间群
- 3 m · Fm3m
安全と法規制
安全情報は参考情報です。供給元の安全データシート（SDS）、適用法令、専門家による評価に代わるものではありません。
GHS分類
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.
危険有害性情報
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 CategoriesSkin Corr. 1B (76.2%)
安全と保護具
化学と産業
用途と製造
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
応用分野
解説Li2O(29.88)．リチウムの炭酸塩，水酸化物，硝酸塩を水素気流中で800 ℃ に加熱して得られる．白色の多孔性粉末．融点1570 ℃．密度2.013 g cm－3．空気中で水や二酸化炭素を吸収する．水に溶けて水酸化リチウムを生じる．導電性ガラス，電池，固体電解質の製造に用いられる．[CAS 12057-24-8]森北出版「化学辞典（第2版）
使用Lithium 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.
一般的な説明Lithium oxide is a white crystalline solid. Its a strong base. It reacts with water and forms lithium hydroxide.
使用用途酸化リチウムの主な使用用途は、導電性ガラス、電池、固体電解質の製造などです。釉薬にも用いられ、銅と混合して青色に、コバルトと混合してピンクを出すのに用いられています。 熱遮蔽コーティング (Thermal barrier coating; TBCs) においては非破壊的発光分光分析検査や劣化の評価に用いられる場合があります。また、ジルコニアコーティングにおいては、酸化イットリウムと共にドーピング剤として用いられる物質です。
調製方法
製造方法Industrial 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.
サプライヤー
読み込み中…
公開中の見積依頼
読み込み中…
関連反応
7 件
化合物ノート
読み込み中…