Methyltrimethoxysilane (CAS 1185-55-3) — formula C4H12O3Si, molecular weight 136.22; category organic chemicals.
Methyltrimethoxysilane (CAS 1185-55-3) is a chemical raw material in the organic chemicals category. Its molecular formula C4H12O3Si comprises 4 C, 12 H, 3 O, 1 Si atoms. Its molecular weight is about 136.22. Reported physicochemical data: boiling point around 103.5 °C @760 [mm Hg]. 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 | 1185-55-3 |
|---|---|
| Molecular Formula | C4H12O3Si |
| Molecular Weight | 136.22 |
| Boiling Point | 103.5 °C @760 [mm Hg] |
| Applications | household products for conditioning and waterproofing leather, The uses of Methyltrimethoxysilane (MTMS) include as a coupling agent in thermoplastics and thermosetting resins, a cross-linker in silicone sealants, a water repellent component, and in silicone hard-coats for plastics, Monomers |
| Category | Organic Chemicals |
Documented applications: household products for conditioning and waterproofing leather, The uses of Methyltrimethoxysilane (MTMS) include as a coupling agent in thermoplastics and thermosetting resins, a cross-linker in silicone sealants, a water repellent component, and in silicone hard-coats for plastics, Monomers.
Methyltrimethoxysilane is a carbon-based organic compound with CAS registry number 1185-55-3 and molecular formula C4H12O3Si (molecular weight 136.22), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 1185-55-3
Its molecular formula C4H12O3Si comprises 4 C, 12 H, 3 O, 1 Si atoms.
Also known as: Methyltrimethoxysilane · 甲基三甲氧基硅烷
Category: organic chemicals
The CAS registry number of Methyltrimethoxysilane is 1185-55-3.
Molecular formula C4H12O3Si, molecular weight 136.22.
It is also registered under: Methyltrimethoxysilane, 甲基三甲氧基硅烷.
Recorded applications: household products for conditioning and waterproofing leather, The uses of Methyltrimethoxysilane (MTMS) include as a coupling agent in thermoplastics and thermosetting resins, a cross-linker in silicone sealants, a water repellent component, and in silicone hard-coats for plastics, Monomers.
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 Methyltrimethoxysilane (CAS 1185-55-3), compiled from public chemistry databases.
| CAS Registry Number | 1185-55-3 |
|---|---|
| PubChem CID | 14456 |
| Molecular formula | C4H12O3Si |
| IUPAC name | trimethoxy(methyl)silane |
| UNII (FDA) | 0HI0D71MCI |
| Molecular Weight | 136.22 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 3 |
| Exact Mass | 136.05557077 |
| Monoisotopic Mass | 136.05557077 |
| Topological Polar Surface Area | 27.7 |
| Heavy Atom Count | 8 |
| Boiling Point | 103.5 °C @760 [mm Hg] |
|---|---|
| Density | 0.949 @ 20°C |
Methyltrimethoxysilane; 1185-55-3; Trimethoxy(methyl)silane; Trimethoxymethylsilane; Silane, trimethoxymethyl-; DTXSID3027370; Z 6070; 0HI0D71MCI; GLASCA B; NSC-93883; SILQUEST A 1630; DTXCID407370; DOW CORNING 7-5300 FILM-IN-PLACE COATING; DOW CORNING (R) 7-5310 FILM-IN-PLACE BASE; RefChem:818737; 214-685-0
| GHS notification summary | 1.7% (22 / 1271) |
|---|
| GHS notification summary | 1.7% (22 / 1271) |
|---|---|
| Reported hazard statements | H225 (97.6%), H315 (57.2%), H317 (14.8%), H319 (53.7%), H335 (43.4%), H318 (66.7%), H320, H332 |
This chemical does not meet GHS hazard criteria for 1.7% (22 of 1271) of reports.
H225 (97.6%): Highly Flammable liquid and vapor [Danger Flammable liquids]
Methyltrimethoxysilane · CAS 1185-55-3 · C4H12O3Si. UNII 0HI0D71MCI. Boiling Point: 103.5 °C @760 [mm Hg]; Density: 0.949 @ 20°C.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 甲基三甲氧基硅烷