12031-63-9

• 常用中文名：铌酸锂
• 常用英文名：Lithium oxido(dioxo)niobium
• CAS号：12031-63-9
• 分子式：LiNbO₃
• 分子量：147.846
• 相关类别： 无机化工 无机盐 金属氧化物酸盐、金属过氧化物酸盐
• 发布时间：2018-02-08 08:00:00
• 更新时间：2024-01-06 10:41:05
• 【用途一】
  在微波技术中用于调Q开关、光电调制、倍频、光参量振荡；掺加一定量的铁和其他金属杂质的LN晶体，可用作全息记录介质材料。也用于相位调解器、相位光栅调解器、大规模集成光学系统。还广泛用于红外探测器、高频宽道带滤波器等。

名称

• 中文名: 铌酸锂
• 英文名: lithium niobate
• 英文别名: Niobium, olatodioxo-, lithium salt (1:1); MFCD00011080; Lithium metaniobatem Lithium niobium oxide Lithium niobium trioxide; Lithium niobate; LITHIUM METANIOBATE; Rubidium columbate; niobiumlithiumoxide; EINECS 234-755-4; Lithium niobate wafer; Lithium niobium oxide; niobate,lithium; Lithium oxido(dioxo)niobium; lithiummethaniobate

物化性质

• 密度: 4,659 g/cm3
• 熔点: 1275°C
• 分子式: LiNbO₃
• 分子量: 147.846
• 精确质量: 147.907150
• PSA: 57.20000
• 外观性状: 白色粉末
• 折射率: 2.3055 (457 nm 160℃)
• 储存条件:

  常温密闭，阴凉通风干燥处

• 稳定性:

  常温常压下稳定

  避免光，明火，高温。铌酸锂是一种铁电晶体，居里点1210℃，自发极化强度50×10－6C/cm2。经过畸化处理的铌酸锂晶体具有压电、铁电、光电、非线性光学、热电等多性能的材料，同时具有光折变效应。

  莫氏硬度5；折射率n0=2.297；ne=2.208（λ=600nm）；介电常数ε11s=44，ε33s=29.5，ε11T=84，ε33T=30；居里点1210℃；自发极化强度50×10-6C/cm2。为铁电晶体，经畸化处理的铌酸锂晶体是具有压电、铁电、光电、热电、非线性光学以及光折变效应的多功能材料。

  这种盐以及Na和K盐在光电设备、音响设备和激光设备中有很广泛的应用。

• 计算化学:

  1、 氢键供体数量：0

  2、 氢键受体数量：3

  3、 可旋转化学键数量：0

  4、 拓扑分子极性表面积（TPSA）：57.2

  5、 重原子数量：5

  6、 表面电荷：0

  7、 复杂度：49.8

  8、 同位素原子数量：0

  9、 确定原子立构中心数量： 0

  10、 不确定原子立构中心数量：0

  11、 确定化学键立构中心数量：0

  12、 不确定化学键立构中心数量：0

  13、 共价键单元数量：2

• 更多:

  1. 性状：铌酸锂晶体简称LN，属三方晶系，钛铁矿型(畸变钙钛矿型)结构。无色固体，具有钙钛矿型结构。

  2. 密度（g/mL,25℃）：4.3

  3. 相对蒸汽密度（g/mL,空气=1）：未确定

  4. 熔点（ºC）：1240

  5. 沸点（ºC,常压）：未确定

  6. 沸点（ºC，1mmHg）：未确定

  7. 折射率：未确定

  8. 闪点（ºC）：未确定

  9. 比旋光度（º）：未确定

  10. 自燃点或引燃温度（ºC）：未确定

  11. 蒸气压（20ºC）：未确定

  12. 饱和蒸气压（kPa,60ºC）：未确定

  13. 燃烧热（KJ/mol）：未确定

  14. 临界温度（ºC）：未确定

  15. 临界压力（KPa）：未确定

  16. 油水（辛醇/水）分配系数的对数值：未确定

  17. 爆炸上限（%,V/V）：未确定

  18. 爆炸下限（%,V/V）：未确定

  19. 溶解性：未确定

MSDS

Section 1: Product Identification Chemical Name:Lithium niobate (99.998%-Nb)PURATREM CAS Registry Number:12031-63-9 Formula:LiNbO3 EINECS Number:234-755-4 Chemical Family:inorganic compound Synonym:Lithium niobium oxide, Niobium lithium oxide. Section 2: Composition and Information on Ingredients IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL) Title Compound12031-63-9100%no datano data Section 3: Hazards Identification Lithium is toxic to the central nervous system and on repeated ingestion may damage kidneys and act as a Emergency Overview: teratogen Primary Routes of Exposure:Contact with skin and eyes. Dust inhalation. Eye Contact:May cause slight to mild irritation of the eyes. Skin Contact:May cause slight to mild irritation of the skin. Inhalation:May be irritating to the nose, mucous membranes and respiratory tract. Ingestion:Ingestion may lead to dizziness, abdominal cramps, vomiting, bloody diarrhea, weakness, and convulsions. Acute Health Affects:Lithium is toxic to the central nervous system. May be irritating to skin, eyes and respiratory tract. Chronic Health Affects:May cause kidney damage. May be a teratogen. NTP:No IARC:No OSHA:No SECTION 4: First Aid Measures Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need Eye Exposure: assistance in keeping their eye lids open. Get immediate medical attention. Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if Skin Exposure: irritation persists. Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty Inhalation: in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance. Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce Ingestion: vomiting only if directed by medical personnel. SECTION 5: Fire Fighting Measures Flash Point:not applicable Autoignition Temperature:none Explosion Limits:none Extinguishing Medium:none required If involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure self-contained Special Fire Fighting Procedures: breathing apparatus and full protective clothing. Hazardous Combustion andNone Decomposion Products: Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards. SECTION 6: Accidental Release Measures Spill and Leak Procedures:Small spills can be mixed with powdered sodium carbonate or ground limestone and swept up. SECTION 7: Handling and Storage Handling and Storage:Store material in a tightly sealed bottle away from moisture. SECTION 8: Exposure Controls and Personal Protection Eye Protection:Always wear approved safety glasses when handling a chemical substance in the laboratory. Skin Protection:Wear appropriate chemical resistant gloves and protective clothing. Ventilation:If possible, handle the material in an efficient fume hood. In the absence of adequate ventilation a respirator should be worn. The use of a respiratory requires a Respirator: Respirator Protection Program to be in compliance with 29 CFR 1910.134. Ventilation:If possible, handle the material in an efficient fume hood. Additional Protection:No additional protection required. SECTION 9: Physical and Chemical Properties Color and Form:white pwdr. Molecular Weight:147.85 Melting Point:no data Boiling Point:no data Vapor Pressure:no data Specific Gravity:no data Odor:none Solubility in Water:insoluble SECTION 10: Stability and Reactivity Stability:air and moisture stable Hazardous Polymerization:no hazardous polymerization Conditions to Avoid:none Incompatibility:none Decomposition Products:none SECTION 11: Toxicological Information RTECS Data:Oral (rat); LD: >8 gm/kg. Carcinogenic Effects:none Mutagenic Effects:none Tetratogenic Effects:none SECTION 12: Ecological Information Ecological Information:No information available SECTION 13: Disposal Considerations Disposal:Dispose of according to local, state and federal regulations. SECTION 14: Transportation Shipping Name (CFR):Non-hazardous Hazard Class (CFR):NA Additional Hazard Class (CFR):NA Packaging Group (CFR):NA UN ID Number (CFR):NA Shipping Name (IATA):Non-hazardous Hazard Class (IATA):NA Additional Hazard Class (IATA):NA Packaging Group (IATA):NA UN ID Number (IATA):NA SECTION 15: Regulatory Information TSCA:Listed in the TSCA inventory. SARA (Title 313):Title compound not listed Second Ingredient:none SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

毒理学数据: 急性毒性：小鼠口服LD：>8gm/kg； 主要的刺激性影响： 在皮肤上面：可能引起发炎 在眼睛上面：可能引起发炎 致敏作用：没有已知的敏化现象 生态学数据: 通常对水体是稍微有害的，不要将未稀释或大量产品接触地下水，水道或污水系统，未经政府许可勿将材料排入周围环境。 CHEMICAL IDENTIFICATION RTECS NUMBER : QT9800000 CHEMICAL NAME : Niobate, lithium CAS REGISTRY NUMBER : 12031-63-9 LAST UPDATED : 199701 DATA ITEMS CITED : 2 MOLECULAR FORMULA : Li-Nb-O3 HEALTH HAZARD DATA ACUTE TOXICITY DATA TYPE OF TEST : LD - Lethal dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : >8 gm/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 23(6),49,1979

安全

• 危害码 (欧洲): Xi
• 安全声明 (欧洲): S22-S24/25
• 危险品运输编码: NONH for all modes of transport
• RTECS号: QT9800000

制备

1.提拉法以碳酸锂、五氧化二铌为原料制备铌酸锂：将碳酸锂和五氧化二铌放入铂金坩埚中，沿(001)方向生长晶体。为得到优质无色透明圆柱体，

2.通过加热Li2CO3和Nb2O5或熔融Li2O和Nb2O5均可制得偏铌(Ⅴ)酸锂。

3.采用提拉法。将碳酸锂和五氧化二铌放入铂金坩埚中，沿（001）方向生长结晶，当晶体生长的两个方向的两个端面的温度略高于居里温度时，再加一个适当大小的电场，形成晶体后将晶体冷却结晶，即得到铌酸锂晶体。反应式如下。