二甲基硅烷基笼形聚倍半硅氧烷 (CAS No.125756-69-6)
- 中文别名
- 八(二甲基硅氧基)-T8-笼形聚倍半硅氧烷；八(二甲基硅氧基)倍半硅氧烷；二甲基硅氧基-POSS
- 英文名称
- Octakis(dimethylsiloxy)-T8-silsequioxane
- 分子式
- C16H56O20Si16
- 分子量
- 1017.97 分子结构中含8个Si-H活性位点，硅氢含量约
- 所属类别
- 有机无机原料
- 物化性质
- 白色结晶粉末。不溶于水，可溶于氯仿、二氯甲烷、甲苯等有机溶剂。具有T8立方笼形硅氧烷骨架，八个顶点各连接一个二甲基硅氧基（-OSi(CH3)2H），结构规整稳定，含活性Si-H键。熔点约200-220℃（伴随分解），热稳定性好。
- 纯度
- ≥97%
- 外观
- 白色结晶粉末
English description（英文原文，共 1421 字符）
Product Name:Octakis(dimethylsiloxy)-T8-silsequioxane
English Name:Octakis(dimethylsiloxy)-T8-silsequioxane
CAS No.:125756-69-6
Aliases:Octakis(dimethylsiloxy)-T8-silsesquioxane, Dimethylsiloxy-POSS, Octakis(dimethylsiloxy)octasilsesquioxane
Molecular Formula:C16H56O20Si16
Physical Properties:White crystalline powder. Insoluble in water; soluble in chloroform, dichloromethane, toluene and other organic solvents. Possesses a T8 cubic cage-like siloxane framework with eight dimethylsiloxy (-OSi(CH3)2H) groups attached at the vertices, exhibiting a well-defined and stable structure containing reactive Si-H bonds. Melting point is approximately 200-220°C (with decomposition); good thermal stability.
Uses:Used as a monomer for preparing organic-inorganic hybrid materials and polymer nanocomposites. The Si-H bonds in the molecule can introduce functional groups such as epoxy, vinyl, and amino via hydrosilylation to synthesize functionalized POSS derivatives. It also serves as a precursor for low-dielectric-constant materials and as a modifier for coatings, adhesives, sealants, and advanced composites, significantly enhancing heat resistance, mechanical strength, and surface properties.
Technical Specifications:
Molecular formula: C16H56O20Si16
Molecular weight: 1017.97
Contains 8 Si-H active sites; hydrosilane content approximately 0.79 mmol/g
Purity: ≥97%
Appearance: white crystalline powder
English Name:Octakis(dimethylsiloxy)-T8-silsequioxane
CAS No.:125756-69-6
Aliases:Octakis(dimethylsiloxy)-T8-silsesquioxane, Dimethylsiloxy-POSS, Octakis(dimethylsiloxy)octasilsesquioxane
Molecular Formula:C16H56O20Si16
Physical Properties:White crystalline powder. Insoluble in water; soluble in chloroform, dichloromethane, toluene and other organic solvents. Possesses a T8 cubic cage-like siloxane framework with eight dimethylsiloxy (-OSi(CH3)2H) groups attached at the vertices, exhibiting a well-defined and stable structure containing reactive Si-H bonds. Melting point is approximately 200-220°C (with decomposition); good thermal stability.
Uses:Used as a monomer for preparing organic-inorganic hybrid materials and polymer nanocomposites. The Si-H bonds in the molecule can introduce functional groups such as epoxy, vinyl, and amino via hydrosilylation to synthesize functionalized POSS derivatives. It also serves as a precursor for low-dielectric-constant materials and as a modifier for coatings, adhesives, sealants, and advanced composites, significantly enhancing heat resistance, mechanical strength, and surface properties.
Technical Specifications:
Molecular formula: C16H56O20Si16
Molecular weight: 1017.97
Contains 8 Si-H active sites; hydrosilane content approximately 0.79 mmol/g
Purity: ≥97%
Appearance: white crystalline powder
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常见问题
- 二甲基硅烷基笼形聚倍半硅氧烷的 CAS 号是多少？
- 二甲基硅烷基笼形聚倍半硅氧烷的 CAS 号是 125756-69-6。
- 二甲基硅烷基笼形聚倍半硅氧烷的分子式和分子量是什么？
- 二甲基硅烷基笼形聚倍半硅氧烷的分子式为 C16H56O20Si16，分子量约 1017.97 分子结构中含8个Si-H活性位点，硅氢含量约。
- 二甲基硅烷基笼形聚倍半硅氧烷的英文名称是什么？
- 二甲基硅烷基笼形聚倍半硅氧烷的英文名称为 Octakis(dimethylsiloxy)-T8-silsequioxane。
- 二甲基硅烷基笼形聚倍半硅氧烷还有哪些别名？
- 二甲基硅烷基笼形聚倍半硅氧烷又称 八(二甲基硅氧基)-T8-笼形聚倍半硅氧烷、八(二甲基硅氧基)倍半硅氧烷、二甲基硅氧基-POSS。
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