| Catalog Number |
ACM4253343-2 |
| CAS Number |
4253-34-3 |
| Description |
Generally, methyltriacetoxysilane is used as a crosslinking agent in a ratio of 3% to 5%. It can also be used alone or in combination with other acetoxysilanes to provide a sealant with targeted properties (such as required curing speed, adhesion, etc.). |
| Synonyms |
Methylsilanetriyl Triacetate; Triacetoxy(Methyl)Silane |
| Molecular Weight |
220.25 g/mol |
| Molecular Formula |
C7H12O6Si |
| Boiling Point |
87 °C |
| Melting Point |
40-45 °C(lit.) |
| Flash Point |
85 °C |
| Purity |
0.95 |
| Density |
1.4050±0.0050 g/mL |
| Appearance |
Colorless transparent liquid |
| Application |
Methyltriacetoxysilane are more reactive than alkoxysilanes. Methyltriacetoxysilane are frequently used as one-component mixtures to make RTV-1 silicone sealants. These mixtures have an excess of multi-functional acetoxy silane added to silanol-terminated PDMS, which results in a PDMS chain with acetoxy groups at the ends. When this compound is exposed to moisture some acetoxy groups are hydrolyzed and self-condense or react with other acetoxy and rapid crosslinking takes place. Acetic acid formation is one of the driving forces of this reaction. |
| Storage |
Be airtight in a cool and dry environment. |
| EC Number |
224-221-9 |
| Packaging |
10 g; 100 g; |
