Methyltriacetoxysilane (CAS 4253-34-3) — formula C7H12O6Si, molecular weight 220.25; category organic chemicals.
Methyltriacetoxysilane (CAS 4253-34-3) is a chemical raw material in the organic chemicals category. Its molecular formula C7H12O6Si comprises 7 C, 12 H, 6 O, 1 Si atoms. Its molecular weight is about 220.25. Reported physicochemical data: melting point around 40.5 °C. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 4253-34-3 |
|---|---|
| Molecular Formula | C7H12O6Si |
| Molecular Weight | 220.25 |
| Melting Point | 40.5 °C |
| Applications | cross-linker for silicone sealants and adhesives (completely reacts during curing), [OECD SIDS: Methyltriacetoxysilane - 2005], Working with Glues and Adhesives, Sealant (barrier), Intermediate, Waterproofing agent |
| Category | Organic Chemicals |
Documented applications: cross-linker for silicone sealants and adhesives (completely reacts during curing), [OECD SIDS: Methyltriacetoxysilane - 2005], Working with Glues and Adhesives, Sealant (barrier), Intermediate, Waterproofing agent.
Methyltriacetoxysilane is a carbon-based organic compound with CAS registry number 4253-34-3 and molecular formula C7H12O6Si (molecular weight 220.25), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 4253-34-3
Its molecular formula C7H12O6Si comprises 7 C, 12 H, 6 O, 1 Si atoms.
Also known as: Methyltriacetoxysilane · 甲基三乙酰氧基硅烷
Category: organic chemicals
The CAS registry number of Methyltriacetoxysilane is 4253-34-3.
Molecular formula C7H12O6Si, molecular weight 220.25.
It is also registered under: Methyltriacetoxysilane, 甲基三乙酰氧基硅烷.
Recorded applications: cross-linker for silicone sealants and adhesives (completely reacts during curing), [OECD SIDS: Methyltriacetoxysilane - 2005], Working with Glues and Adhesives, Sealant (barrier), Intermediate, Waterproofing agent.
Category: Organic Chemicals.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for Methyltriacetoxysilane (CAS 4253-34-3), compiled from public chemistry databases.
| CAS Registry Number | 4253-34-3 |
|---|---|
| PubChem CID | 77929 |
| Molecular formula | C7H12O6Si |
| IUPAC name | [diacetyloxy(methyl)silyl] acetate |
| UNII (FDA) | W4FX3GZ7AB |
| Molecular Weight | 220.25 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 6 |
| Exact Mass | 220.04031463 |
| Monoisotopic Mass | 220.04031463 |
| Topological Polar Surface Area | 78.9 |
| Heavy Atom Count | 14 |
| Melting Point | 40.5 °C |
|---|---|
| Density | 1.175 @ 20°C |
| Vapor Pressure | 0.2 [mmHg] |
Methyltriacetoxysilane; 4253-34-3; Methylsilanetriyl triacetate; Silanetriol, methyl-, triacetate; EINECS 224-221-9; Silanetriol, 1-methyl-, 1,1,1-triacetate; triacetoxy(methylsilane); NSC 139845; DTXSID0027565; BRN 1788668; EC 224-221-9; 4-04-00-04208 (Beilstein Handbook Reference); DTXCID507565; CM8980; Silane, methyltriacetoxy; RefChem:158342
| GHS notification summary | 0.9% (5 / 561) |
|---|
| GHS notification summary | 0.9% (5 / 561) |
|---|---|
| Reported hazard statements | H302 (73.6%), H314 (85.2%), H315 (20.7%), H318 (23%), H319 (20.5%), H335 (13.7%), H371 |
This chemical does not meet GHS hazard criteria for 0.9% (5 of 561) of reports.
H302 (73.6%): Harmful if swallowed [Warning Acute toxicity, oral]
Methyltriacetoxysilane · CAS 4253-34-3 · C7H12O6Si. UNII W4FX3GZ7AB. Melting Point: 40.5 °C; Density: 1.175 @ 20°C; Vapor Pressure: 0.2 [mmHg].
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 甲基三乙酰氧基硅烷