Section 1: Product Identification Chemical Name: Tri-t-butoxysilanol (99.999%-Si) PURATREM CAS Registry Number: 18166-43-3 Formula: [(CH3)3CO]3SiOH EINECS Number: none Chemical Family: organosilicon compound Synonym: Tris(tert-butoxy)silanol Section 2: Composition and Information on Ingredients Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL) Title compound 18166-43-3 100% no data no data Section 3: Hazards Identification Emergency Overview: Irritating to skin, eyes and respiratory tract. Primary Routes of Exposure: Ingestion, inhalation, eyes Eye Contact: Causes slight to mild irritation of the eyes. Skin Contact: Causes slight to mild irritation of the skin. Inhalation: Irritating to the nose, mucous membranes and respiratory tract. Ingestion: No information available on the physiological effects of ingestion. May be harmful if swallowed. Acute Health Affects: Irritating to skin, eyes and respiratory tract. No information on long-term chronic effects. Contact with moisture, as resulting from human contact, will Chronic Health Affects: produce n-butanol which shows reproductive effects in animal studies. 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: no data Autoignition Temperature: none Explosion Limits: none Extinguishing Medium: carbon dioxide, dry powder 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 and If involved in a fire this material may emit irritating fumes. 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 Store in a tightly sealed container under an inert atmosphere of nitrogen or argon. Keep in a cool, dry, Handling and Storage: well-ventillated area. 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. Ventilation: Handle the material in an efficient fume hood. If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator Respirator: Protection Program to be in compliance with 29 CFR 1910.134. Ventilation: Handle the material in an efficient fume hood. Additional Protection: No additional protection required. SECTION 9: Physical and Chemical Properties Color and Form: white solid Molecular Weight: 264.43 Melting Point: 63-65°C Boiling Point: 205-210C Vapor Pressure: 0.4mm @ 55? Specific Gravity: 0.89g/cc3 Odor: none Solubility in Water: insoluble SECTION 10: Stability and Reactivity Stability: moisture sensitive Hazardous Polymerization: no hazardous polymerization Conditions to Avoid: prolonged exposure to moisture Incompatibility: strong oxidizing agents, strong acids and halogens Decomposition Products: carbon dioxide, carbon monoxide, organic fumes, butanol and silicon dioxide. 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: Not listed in the TSCA inventory SARA (Title 313): Not reportable under SARA 313 Second Ingredient: none
硅烷醇和硅烷是合成硅基材料的关键前体和中间体。虽然通过29 Si NMR 光谱对其进行表征和定量已受到极大关注,但该技术受到29 Si 自然丰度低及其灵敏度低的限制。在这里,我们描述了一种使用 p-H 2超极化29 Si 的方法。观察到的信号增强在 11.7 T 下接近 3000 倍,在玻尔兹曼条件下需要很多天的测量才能获得可比较的结果。利用所得信号来监测三(叔丁氧基)硅烷醇与三氟甲磺酸酐在T 1校正过程中的快速反应,从而实现快速定量。这些结果展示了一种量化硅材料合成中动态过程和中间体的新途径。
Siloxyaluminum Alkyl Cations: Syntheses, Structures, and Reactions Related to Activation of Zirconocene Catalysts on Silica Gel Surfaces
作者:Olaf Wrobel、Frank Schaper、Ulrich Wieser、Heike Gregorius、Hans H. Brintzinger
DOI:10.1021/om0207515
日期:2003.3.1
solution yields a moderately active catalyst for ethene polymerization. This reactivity of siloxyaluminum methyl cations is qualitatively similar to, although substantially lower than, that of a silicagelsurface treated with trimethylaluminum and a cationizing agent.
类型的Me双核甲硅烷氧基甲基络合物2的Al(μ-OSIR 3)2阿尔梅2与质子化反应Ñ,Ñ -dimethylanilinium四(五氟苯基)硼酸盐,用CH释放4,以形成二甲基苯胺(DMA) -稳定的甲硅烷氧基甲基阳离子我2的Al(μ-OSIR 3)2阿尔梅(NME 2(C 6 H ^ 5)+这些阳离子抽象为C1。-配体选自(C 5 H ^ 5)2的ZrCl 2,得到双核阳离子(C 5 H ^ 5)2的ZrCl} 2(μ-Cl)的+和CH 3 -从配位体(C 5 H ^ 5)2的Zr(CH 3)2,通过的方式,得到DMA稳定的阳离子(C 5 H 5)2 Zr(CH 3)NMe 2(C 6 H 5)+ CH活化产物(C 5 H 5)2 ZrCH 2 NMe(C 6 H5)+ ; 与Me 2 Si(ind)2 ZrMe 2在甲苯溶液中的反应生成用于乙烯聚合的中等活性催化剂。甲硅烷氧基铝甲基阳
Vapor deposition of metal oxides, silicates and phosphates, and silicon dioxide
申请人:Gordon G. Roy
公开号:US20050277780A1
公开(公告)日:2005-12-15
Metal silicates or phosphates are deposited on a heated substrate by the reaction of vapors of alkoxysilanols or alkylphosphates along with reactive metal amides, alkyls or alkoxides. For example, vapors of tris(tert-butoxy)silanol react with vapors of tetrakis(ethylmethylamido)hafnium to deposit hafnium silicate on surfaces heated to 300° C. The product film has a very uniform stoichiometry throughout the reactor. Similarly, vapors of diisopropylphosphate react with vapors of lithium bis(ethyldimethylsilyl)amide to deposit lithium phosphate films on substrates heated to 250° C. Supplying the vapors in alternating pulses produces these same compositions with a very uniform distribution of thickness and excellent step coverage.
Alkynylsilanes – a missing piece of different silylation agents, can serve as valuable substrates in the O‐silylation through a dealkynative coupling with alcohols or silanols. The described approach displays a whole array of advantages in terms of green chemistry and is a promising alternative to existing methodologies.
homogeneous catalyst in numerous reactions. Herein, the preparation of silica-supported MnII sites is reported using Surface Organometallic Chemistry (SOMC), combined with tailored thermolytic molecular precursors approach based on Mn2 [OSi(OtBu)3 ]4 and MnN(SiMe3 )2 }2 ⋅THF. These supported MnII sites, free of organic ligands, efficiently catalyze numerous reactions: hydroboration and hydrosilylation of ketones
Reactivity Studies, Structural Characterization, and Thermolysis of Cubic Titanosiloxanes: Precursors to Titanosilicate Materials Which Catalyze Olefin Epoxidation
作者:Ramaswamy Murugavel、Paul Davis、Vivekanand S. Shete
DOI:10.1021/ic034317m
日期:2003.7.1
titanosiloxane [RSiO(3)Ti(OPr(i))](4) (R = 2,6-Pr(2)(i)C(6)H(3)NSiMe(3)) (1) is found to be relatively inert in its attempted reactions with alcohols and other acidic hydrogen containing compounds. The reaction of 1 with silanol (Bu(t)O)(3)SiOH however proceeds over a period of approximately 3 months to result in the hydrolysis of (Bu(t)O)(3)SiOH and yield the transesterification product [RSiO(3)Ti(OBu(t))](4)