中文名 | 二硅化钽 |
---|---|
英文名 | Tantalum disilicide |
中文别名 | 二矽化钽 |
英文别名 |
bis(λ<sup>2</sup>-silanylidene)tantalum
MFCD00049564 EINECS 234-902-2 |
密度 | 9.14 |
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熔点 | 2200ºC |
分子式 | Si2Ta |
分子量 | 237.11900 |
精确质量 | 236.90200 |
外观性状 | Powder |
储存条件 | 室温 |
水溶解性 | Insoluble in water. |
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:为暗灰色立方结晶粉末 2. 密度(g/mL,25℃):9.14 3. 相对蒸汽密度(g/mL,空气=1):未确定 4. 熔点(ºC):2200 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 20.晶格常数:a=0.4778nm,c=0.6558nm 21.显微硬度(kg·mm-2):1407 22.弹性模量(kg·K-1):30230 23.导电率(Ω·cm-1):1.23×10-5 24.比热容(J/(g·℃)):0.33 |
Section 1: Product Identification Chemical Name:Tantalum silicide (99.5%-Ta) CAS Registry Number:12039-79-1 Formula:TaSi2 EINECS Number:234-902-2 Chemical Family:metal silicide Synonym:Tantalum disilicide
Section 2: Composition and Information on Ingredients IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL) Title compound12039-79-1100%10mg/m3(Ta)5mg/m3(Ta) Section 3: Hazards Identification Emergency Overview:May be irritating to skin, eyes and mucous membranes. Primary Routes of Exposure:Ingestion, inhalation. Eye Contact:May cause slight to mild irritation of the eyes. Skin Contact:May cause slight to mild irritation of the skin. Inhalation:Do not breathe dust. Dust may be irritating to the nose, mucous membranes and respiratory tract. Ingestion:No information is available on the physiological effects of ingestion. Acute Health Affects:Dust may be irritating to the nose, mucous membranes and respiratory tract. 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:dry chemical, carbon dioxide, or foam. If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure Special Fire Fighting Procedures: self-contained breathing apparatus and full protective clothing. Hazardous Combustion andIf involved in a fire this material may emit irritating dusts. Decomposion Products: Unusual Fire or Explosion Hazards: No unusual fire or explosion hazard. SECTION 6: Accidental Release Measures Spill and Leak Procedures:Sweep up the material and dispose of properly. SECTION 7: Handling and Storage Handling and Storage:Store the material in a sealed container. 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:Material may form a fine dust. If possible, handle the material in an efficient fume hood. If in form of fine dust and ventilation is not available a respirator should be worn. The use of respirators Respirator: requires a 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:-325 mesh gray pwdr. (avg. 10 microns or less) Molecular Weight:237.12 Melting Point:2200° Boiling Point:no data Vapor Pressure:not applicable Specific Gravity:9.14 Odor:none Solubility in Water:insoluble SECTION 10: Stability and Reactivity Stability:air and moisture stable Hazardous Polymerization:No hazardous polymerization. Conditions to Avoid:formation of a fine dust Incompatibility:mineral acids 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 |