Tetramethyl orthosilicate, 98%
Order Tetramethyl orthosilicate, 98% (CAS 681-84-5) online at Zemixal: C4H12O4Si, COA and SDS with every lot, worldwide shipping.
About Tetramethyl orthosilicate, 98%
Tetramethyl orthosilicate, 98% is part of the Zemixal organosilicon Compounds & Silanes range. For your records (98%), the material is defined by CAS 681-84-5, formula C4H12O4Si and molar mass 152.22 g/mol. Expect colourless liquid.
Typical applications
- Organic synthesis
- API synthesis
Storage and safety notes
Physical constants on file: melting point -4 °C, boiling point 121-122 °C and density 1.023 g/mL at 25 °C. Hazard communication follows GHS (Danger: H226, H315, H318 and H330). Our SDS lists exposure controls and first-aid measures. For transport it ships as UN UN 2606.
Available as 25 g, 100 g, 500 g, 5 kg and 200 kg. Larger or split packs can be arranged. You receive a batch certificate of analysis and a 16-section SDS with each order. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.
Typical uses
- Organic synthesis
- API synthesis
Applications
Specifications and identifiers
| Product name | Tetramethyl orthosilicate, 98% |
|---|---|
| Catalogue number | ZX-010208 |
| CAS number | 681-84-5 |
| IUPAC name | tetramethyl silicate |
| Molecular formula | C4H12O4Si |
| Molar mass | 152.22 g/mol |
| Exact mass | 152.0505 |
| Purity / assay | 98% |
| Physical form | Liquid |
| Appearance | Colourless liquid |
| Melting point | -4 °C |
| Boiling point | 121-122 °C |
| Density | 1.023 g/mL at 25 °C |
| H-bond donors / acceptors | 0 / 4 |
| Topological polar surface area | 36.9 Ų |
| HS code | 29319090 |
| UN number | UN 2606 |
| InChIKey | LFQCEHFDDXELDD-UHFFFAOYSA-N |
| SMILES | CO[Si](OC)(OC)OC |
| PubChem CID | 12682 |
| Synonyms | Tetramethoxysilane, TMOS, Methyl orthosilicate, Methyl silicate, Methyl Silicate 39, Silane, tetramethoxy-, Methyl silicate 28, Methyl silicate ((MeO)4Si), TL 190, Methyl silicate ((CH3)4SiO4), Silicic acid, methyl ester of ortho-, TSL 8114 |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- H226Flammable liquid and vapor
- H315Causes skin irritation
- H318Causes serious eye damage
- H330Fatal if inhaled
- H335May cause respiratory irritation
- H372Causes damage to organs through prolonged or repeated exposure
Precautionary statements P210, P233, P240, P241, P242, P243, P260, P261, P264, P264 + P265, P270, P271, P280, P284, P302 + P352, P303 + P361 + P353, P304 + P340, P305 + P354 + P338, P316, P317, P319, P320, P321, P332 + P317
Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 25 g | Quoted on request | |
| 100 g | Quoted on request | |
| 500 g | Quoted on request | |
| 5 kg | Quoted on request | |
| 200 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
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