224638-27-1

Basic information

• Product Name: Si 121
• Synonyms: KH-Si 121;N3-[3-(Dimethoxymethylsilyl)propyl]-N1,N1-dimethyl-1,3-propanediamine;Si 121;3-(N,N-Dimethylaminopropyl)Aminopropyl Methyl Dimethoxysilane
• CAS NO: 224638-27-1
• Molecular Formula: C11H28N2O2Si
• Molecular Weight: 248.44
• Mol File: 224638-27-1.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 282.0±25.0 °C(Predicted)
• Appearance: /
• Density: 0.904±0.06 g/cm3(Predicted)
• Refractive Index: 1.442
• PKA: 10.42±0.19(Predicted)
• CAS DataBase Reference: Si 121(CAS DataBase Reference)
• NIST Chemistry Reference: Si 121(224638-27-1)
• EPA Substance Registry System: Si 121(224638-27-1)

Safety Data

• Hazardous Substances Data: 224638-27-1(Hazardous Substances Data)

Upstream product

• 109-55-7 1-amino-3-(dimethylamino)propane 
• 18171-19-2 3-chloropropylmethyldimethoxysilane 

Relevant articles and documents

Preparation method of N-(gamma'-dimethyl aminopropyl)-gamma-aminopropyl methyl dimethoxy silane

The invention relates to a preparation method of an orgniac silane coupling agent, in particular to a preparation method of N-(gamma'-dimethyl aminopropyl)-gamma-aminopropyl methyl dimethoxy silane. The preparation method mainly solves the problems that in the synthesis process, yield is low, purity is low, the appearance color is yellowish and the production cost is high. The preparation method includes the steps of adding 3-dimethylaminopropylamine and solvent into a reaction kettle, raising the temperature, dropwise adding gamma-aminopropyl methyl dimethoxy silane, making materials sufficiently react, making liquid stand and layered, conducting cooling at the same time, separating out amine salt on the lower layer, collecting crude products on the upper layer, conducting the distillation procedure, putting the crude products on the upper layer into a distillation still to be subjected to reduced pressure distillation, conducting vacuumizing, introducing cooling water into a condenser, recycling solvent and excessive 3-dimethylaminopropylamine, increasing the vacuum degree, and collecting distillate to obtain finished products.