Tetramethyl orthosilicate
Tetramethyl orthosilicate (CAS 681-84-5), molecular formula Si(OCH3)4, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- Tetramethoxysilane
| Molecular weight | 152.22 |
|---|---|
| Linear formula | Si(OCH3)4 |
| Assay | ≥99% |
| Grade | deposition grade |
| Form | liquid |
| Boiling point | 121-122 °C(lit.) |
| Density | 1.023 g/mL at 25 °C(lit.) |
| Melting point | −4 °C(lit.) |
| Refractive index | n20/D 1.368(lit.) |
| Vapour pressure | 3.35 psi (20 °C) |
| Vapour density | 5.25 (vs air) |
| Application | Used in the sol-gel synthesis of chromium-doped silicates1 and in the formation of hexagonal mesoporous silica layers.2 |
Hazard statements
- H226Flammable liquid and vapour
- H315Causes skin irritation
- H318Causes serious eye damage
- H330Fatal if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P280Wear protective gloves, clothing and eye/face protection
- P284Wear respiratory protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 26 °C / 78.8 °F |
| Transport (UN / ADR) | UN 2606 3(6.1) / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T+ |
| Risk statements (R) | 10-26-37/38-41 |
| Safety statements (S) | 16-26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Tetramethyl orthosilicate?
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Tetramethyl orthosilicate (CAS 681-84-5), molecular formula Si(OCH3)4, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of Tetramethyl orthosilicate does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Tetramethyl orthosilicate in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of Tetramethyl orthosilicate?
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Tetramethyl orthosilicate has CAS number 681-84-5 and molecular formula Si(OCH3)4. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Tetramethyl orthosilicate?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of Tetramethyl orthosilicate ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should Tetramethyl orthosilicate be stored?
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Store Tetramethyl orthosilicate in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is Tetramethyl orthosilicate used for?
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Tetramethyl orthosilicate is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for Tetramethyl orthosilicate?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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