Overview
Trimethoxysilane is an organosilicon compound with the formula (CH3O)3SiH. It serves as a versatile intermediate in silicone chemistry, primarily functioning as a crosslinking agent due to its reactive Si-H and methoxy groups. Industrially, it is synthesized via the reaction of silicon tetrachloride with methanol, followed by reduction. Its ability to form stable siloxane bonds upon hydrolysis makes it indispensable in coatings and adhesives.
Physical and Chemical Properties
As a colorless liquid with a faint odor, trimethoxysilane is highly reactive with water, releasing methanol and forming silanols that further condense into siloxane networks. Its density of 0.955 g/cm³ and boiling point of 102-103°C make it suitable for solvent-based formulations. The compound’s reactivity is pH-dependent, with faster hydrolysis under acidic or alkaline conditions. It exhibits good solubility in hydrocarbons, ethers, and alcohols but must be stored anhydrously to prevent premature polymerization.
Main Applications
In the coatings industry, trimethoxysilane enhances adhesion to substrates like glass and metals by forming covalent bonds. It is also a key component in moisture-curable sealants, where it improves flexibility and durability. Additionally, it modifies silicone resins for high-temperature stability and acts as a surface treatment agent for fillers (e.g., silica) in rubber and plastic composites. Emerging uses include electronic encapsulants and ceramic precursors.
Safety and Storage
Trimethoxysilane is flammable (flash point: 12°C) and corrosive, requiring handling in well-ventilated areas with flame-proof equipment. Skin contact can cause irritation, necessitating gloves and goggles. Storage mandates airtight containers under nitrogen to prevent moisture ingress. Spills should be neutralized with inert absorbents, not water, due to vigorous reactions. Dispose of waste via licensed hazardous material handlers.
B2B Procurement Guide
Bulk buyers should prioritize suppliers offering certificates of analysis (CoA) confirming purity (>98%) and low heavy metal content. Drum (200 kg) or IBC tank shipments are common, with costs varying by volume and region. Evaluate logistics for temperature-controlled transport if required. Long-term contracts may secure better pricing, while spot purchases should monitor market trends linked to methanol and silicon feedstock prices.
Related Manufacturers
- 主营：硅烷封端聚醚、全氟三丁胺、木质素、吉氏色素
- 主营：固体酸催化剂、重组胶原蛋白、硅油、特种硅油、聚硅氮烷、硼酸铝晶须、碳化硅晶须、t-BAMBP萃取剂、全氟三丁胺
- 主营：封端剂、偶联剂、油漆涂料、生产用助催化剂
- 主营：硅胶封端剂、偶联剂
- 主营：涂料助剂、工业清洗剂、表面活性剂、三甲基乙氧基硅烷、合成材料助剂、合成香料、溶剂、香精和香料中间、合成材料中间体、选矿药剂、萃取剂
- 主营：医药中间体、香精香料、选矿药剂、乙烯基单封头、化工原料、助剂、偶联剂、扩链剂、化妆品原料
- 主营：溶剂
- 主营：医药中间体、香精香料、氧化石蜡皂、硅烷偶联剂、苯乙烯磷酸、苯甲羟肟酸、H205、阻聚剂706、阻聚剂701、萤石矿捕收剂、白钨矿捕收剂、稀土矿捕收剂、氧化锑矿捕收剂、活化剂
- 主营：甲基三氯硅烷、甲基三甲氧基硅烷、水杨羟肟酸、司盘
- 主营：捕收剂、浮选剂、硫化矿、硅树脂橡胶封端剂、萃取剂、液体松香、稀土镍钴、苯氧肟酸、苄基胂酸、水杨羟肟酸、氧化石蜡皂、丁基钠黄药、磷酸二异辛酯、金属氧化矿物、乙二胺磷酸盐、硫铁矿的抑制剂、冶金行业螯合剂、医药中间体
- 主营：捕收剂、液体聚硫橡胶、染料中间体、乙烯基单封头、扩链剂、催化剂、交联剂、稳定剂、辅助剂、中间体、碳酸镍、抗氧化剂、乙酰丙酮锰、羟基保护剂、表面活性剂、四甲基氯化铵、分子筛模板剂、溶剂型防锈漆、四乙基氯化铵、正癸基硫酸钠、药物合成原料、氧化石蜡皂、水杨羟肟酸、阻聚剂706、克利夫酸
- 主营：防水sbs、玻纤瓦、tpz防水、树脂封孔剂、瓦油毡、bac自粘、卷材sam、eva防水、彩钢瓦、卷材tpo、k11防水、高分子、pvc防水、沥青瓦、eva自粘、pet自粘、hdpe防水、fyt1防水、tpob防水、聚氯乙烯、卷材包工、水泥路面、彩油毡瓦、水卷卷材、聚酯复合、反应粘结
- 主营：UV涂料专用纳米二氧化硅复合材料、溶剂型纳米硅溶胶、氨基官能团有机硅预聚体、甲基丙烯酰氧丙基三(三甲基硅氧基)硅烷、双(三甲氧基硅基丙基)胺、三(三甲氧基硅基丙基)三聚异氰酸酯、环氧基官能团水性附着力促进剂、氯甲基甲基二甲氧基硅烷、氨基官能团倍半硅氧烷水溶液、四甲基四环氧环己基乙基环四硅氧烷