12136-78-6

• 常用中文名：二硅化钼
• 常用英文名：molybdenum silicide
• CAS号：12136-78-6
• 分子式：MoSi₂
• 分子量：152.13100
• 相关类别： 无机化工 无机盐 硅化物及硅酸盐
• 发布时间：2018-09-26 18:30:00
• 更新时间：2024-01-03 15:51:12
• 下载msds

名称

• 中文名: 硅化钼
• 英文名: molybdenum silicide
• 中文别名: 硅化钼靶
• 英文别名: EINECS 235-231-8; MFCD00151535; bis(λ²-silanylidene)molybdenum; Molybdenum disiticide; Molybdenum silicide

物化性质

• 密度: 6.31
• 熔点: 1930ºC
• 分子式: MoSi₂
• 分子量: 152.13100
• 精确质量: 153.85900
• 外观性状: 灰色金属
• 储存条件:

  常温密闭避光，通风干燥处

• 稳定性:

  常温常压下稳定

  避免的物料 氧化物. 室温时比电阻为21.6×10-6Ω·cm，不溶于一般的矿物酸（包括王水），但溶于硝酸和氢氟酸的混合酸中，具有良好的高温抗氧化能力，可用作高温（＜1700℃）氧化气氛中工作的发热元件。
• 水溶解性: Insoluble in acids and aqua regia, however, it is soluble in HF and HNO{3}Soluble in nitric acid and hydrofluoric acid. Insoluble in water most acids.
• 分子结构:

  1、摩尔折射率：无可用的

  2、摩尔体积（cm³/mol）：无可用的

  3、等张比容（90.2K）：无可用的

  4、表面张力（dyne/cm）：无可用的

  5、介电常数：无可用的

  6、极化率（10^-24cm³）：无可用的

  7、单一同位素质量：157.890559 Da

  8、标称质量：158 Da

  9、平均质量：156.1428 Da

• 计算化学:

  1、 氢键供体数量：0

  2、 氢键受体数量：0

  3、 可旋转化学键数量：0

  4、 拓扑分子极性表面积（TPSA）：0

  5、 重原子数量：3

  6、 表面电荷：0

  7、 复杂度：18.3

  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：1

• 更多:

  1. 性状：在MoSi2中钼与硅之间以金属键结合，硅和硅之间则以共价键连结。二硅化钼为灰色四方晶体

  2. 密度（g/mL,25℃）：6.31

  3. 相对蒸汽密度（g/mL,空气=1）：未确定

  4. 熔点（ºC）：2030

  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：不溶于水

MSDS

Section 1: Product Identification Chemical Name:Molybdenum silicide (99+%-Mo) CAS Registry Number:12136-78-6 Formula:MoSi2 EINECS Number:235-231-8 Chemical Family:metal silicide Synonym:Molybdenum disilicide Section 2: Composition and Information on Ingredients IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL) Title compound12136-78-6100%10mg/m3( as Mo)15mg/m3 (as Mo) Section 3: Hazards Identification Emergency Overview:May be irritating to skin and eyes and respiratory tract. Primary Routes of Exposure:Ingestion, inhalation Eye Contact:May be a mild to severe irritant to the eyes. Skin Contact:May cause slight to mild irritation of the skin. Inhalation:Do not breath dust. Inhalation of powder may lead to irritation of the respiratory tract. Ingestion:No information is available on the physiological effects of ingestion. Acute Health Affects:May be irritating to skin, eyes, mucous membranes and respiratory tract. Do not breath dust. Chronic Health Affects:No information available on long-term chronic effects. 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 in Inhalation: 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:no data Autoignition Temperature:no data Explosion Limits:no data Extinguishing Medium:carbon dioxide, dry powder or foam. If involved in a fire, fire fighters should be equipped with NIOSH approved positive pressure self-contained Special Fire Fighting Procedures: breathing apparatus and full protective clothing. Hazardous Combustion andNo hazardous combustion or decomposition products. Decomposion Products: Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards. SECTION 6: Accidental Release Measures Small spills can be mixed with vermiculite, sodium carbonate or other suitable non combustible adsorbent and Spill and Leak Procedures: swept up. SECTION 7: Handling and Storage Handling and Storage:No special precautions needed in handling and storage.. 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 protective clothing and gloves. Consult with glove manufacturer to determine the proper type of glove. Ventilation:Material may form a fine dust. If possible, handle the material in an efficient fume hood. If ventilation is not available a respirator should be worn. The use of respirators requires a Respiratory Respirator: Protection Program to be in compliance with 29 CFR 1910.134. Ventilation:Material may form a fine dust. 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:black powder Molecular Weight:152.13 Melting Point:no data Boiling Point:no data Vapor Pressure:no data Specific Gravity:6.31 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:oxidizing agents Decomposition Products:none SECTION 11: Toxicological Information RTECS Data:No information available in the RTECS files. Carcinogenic Effects:no data Mutagenic Effects:no data Tetratogenic Effects:no data 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: 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: 通常对水是不危害的，若无政府许可，勿将材料排入周围环境。

安全

• 符号: GHS07
• 信号词: Warning
• 危害声明: H302-H312-H332
• 警示性声明: P280
• 个人防护装备: dust mask type N95 (US);Eyeshields;Gloves
• 危害码 (欧洲): Xn: Harmful;
• 风险声明 (欧洲): R20/21/22
• 安全声明 (欧洲): 36
• 危险品运输编码: NONH for all modes of transport
• WGK德国: 3

制备

Mo+2SiMoSi2

二种元素直接反应可制得MoSi2。