Triethoxysilane
- CAS No.
- 998-30-1
- Chemical Name:
- Triethoxysilane
- Synonyms
- TES;TRIES;triethoxy-silan;Silane, triethoxy-;DK967;CT2500;DKSI078;HSi(OC2H5)3;DKFELEX0259;TRIETHOXYSILANE
- CBNumber:
- CB5356887
- Molecular Formula:
- C6H16O3Si
- Molecular Weight:
- 164.27
- MDL Number:
- MFCD00009061
- MOL File:
- 998-30-1.mol
- MSDS File:
- SDS
| Melting point | -170°C |
|---|---|
| Boiling point | 134-135 °C(lit.) |
| Density | 0.89 g/mL at 25 °C(lit.) |
| vapor pressure | 9.21hPa at 20℃ |
| refractive index |
n |
| Flash point | 80 °F |
| storage temp. | Store at 0-5°C |
| solubility | sol diethyl ether, THF, alkanes, aromatic and chlorinated solvents. |
| form | A liquid |
| Specific Gravity | 0.8753 |
| Viscosity | 0.76mm2/s |
| Water Solubility | Insoluble in water. Soluble in organic solvents. |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| Sensitive | Moisture Sensitive |
| BRN | 1738989 |
| Stability | Stable, but moisture sensitive. Flammable. Incompatible with strong oxidizing agents, strong acids, strong bases. |
| InChIKey | QQQSFSZALRVCSZ-UHFFFAOYSA-N |
| CAS DataBase Reference | 998-30-1(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | 8T460WDH89 |
| NIST Chemistry Reference | Silane, triethoxy-(998-30-1) |
| EPA Substance Registry System | Triethoxysilane (998-30-1) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS02,GHS05,GHS06 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H226-H302-H315-H318-H330 | |||||||||
| Precautionary statements | P210-P280-P301+P312-P303+P361+P353-P304+P340+P310-P305+P351+P338 | |||||||||
| Hazard Codes | T+,C,T | |||||||||
| Risk Statements | 10-26-34-23/24/25 | |||||||||
| Safety Statements | 26-28-36/37/39-45 | |||||||||
| RIDADR | UN 3384 6.1/PG 1 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | VV6682000 | |||||||||
| F | 10-21 | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 6.1 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29209090 | |||||||||
| Hazardous Substances Data | 998-30-1(Hazardous Substances Data) | |||||||||
| REACH Registrations | Active | |||||||||
| Excepted Quantities | Forbidden | |||||||||
| NFPA 704 |
|
Triethoxysilane price More Price(14)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 390143 | Triethoxysilane 95% | 998-30-1 | 10ml | $59.6 | 2026-04-30 | Buy |
| Sigma-Aldrich | 390143 | Triethoxysilane 95% | 998-30-1 | 50ml | $180 | 2026-04-30 | Buy |
| TRC | T775640 | Triethoxysilane | 998-30-1 | 5ml | $95 | 2021-12-16 | Buy |
| Usbiological | 468107 | Triethoxysilane | 998-30-1 | 5ml | $368 | 2021-12-16 | Buy |
| SynQuest Laboratories | 6183-1-43 | Triethoxysilane | 998-30-1 | 25g | $30 | 2021-12-16 | Buy |
Triethoxysilane Chemical Properties, Uses, Production
Description
Triethoxysilane is an organosilicon compound with the formula HSi(OC2H5)3. It is a colourless liquid used in precious metal-catalysed hydrosilylation reactions. The resulting triethoxysilyl groups are often valued for attachment to silica surfaces.Compared to most compounds with Si-H bonds, triethoxysilane exhibits relatively low reactivity. Like most silyl ethers, triethoxysilane is susceptible to hydrolysis. As reducing agent, triethoxysilane can for example be used in reduction of amides, reduction of carbonyl compounds in the presence of cobalt(II) chloride as catalyst, Cu-catalyzed reductive hydroxymethylation of styrenes, and Rh-catalyzed hydrodediazoniation.
Chemical Properties
Colorless, clear liquid
Physical properties
bp 134–135 °C; d 0.89 g cm3.
Uses
Triethoxysilane is used in metal catalyzed hydrosilylation reactions.
Uses
Triethoxysilane is useful reagent for the hydrosilylation of carbon–carbon multiple bonds; reducing agent for carbonyl groups
Application
Reduces esters in the presence of zinc hydride catalyst. Reduces aldehydes and ketones to alcohols via the silyl ethers in presence of fluoride ion. Gives 1,2-reduction of enones to allyl alcohols.
General Description
Liquid. Used as a reducing agent.
Air & Water Reactions
May become pyrophoric, by generation of silane
Reactivity Profile
Triethoxysilane has been involved in cases where Triethoxysilane has disproportionated, generating silane (SiH4) which has a history of being pyrophoric.
Health Hazard
Toxicity is similar to silanes. Silanes are moderately irritating to skin, eyes, and mucous membranes. Silane compounds are toxic.
Fire Hazard
When heated to decomposition, Triethoxysilane emits acrid smoke and fumes.
Flammability and Explosibility
Highly flammable
Safety Profile
Poison by intravenous route.Moderately toxic by inhalation. Flammable liquid. Whenheated to decomposition it emits acrid smoke andirritating fumes.
Purification Methods
Fractionate it using a column packed with glass helices of ca 15 theoretical plates in an inert atmosphere. Store it in aliquots in sealed ampoules because it is sensitive to moisture. [Spauschus et al. J Am Chem Soc 72 1377 1950, MacKenzie et al. J Am Chem Soc 72 2032 1950, Havill et al. J Org Chem 13 280 1948, Beilstein 1 IV 1359.]
Triethoxysilane Preparation Products And Raw materials
Raw materials
Preparation Products
1of3
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Zhuangming New Material Technology Jiangsu Co., Ltd. | 0513-86936896 19939955216 | sales@zhuangming.net | China | 599 | 58 |
| CHEMBSF (Shanghai) Biomedical Technology Co., Ltd | 60662071 18117346937 | 18117346937@163.com | China | 4996 | 58 |
| WUHAN JIXINYIBANG BIOTECHNOLOGY .,LTD | 59768661 13297943853 | 1704244976@qq.com | China | 4965 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Beijing dtftchem Technology Co., Ltd. | 010-60275820 13031183356 | elainezt@sina.com | China | 1386 | 62 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9409 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44852 | 61 |
View Latest Price from Triethoxysilane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-10-08 | Triethoxysilane
998-30-1
|
25KG | 99% | 10000000 KG | HEFEI ANBANG CHEMICAL CO., LTD. | ||
 |
2026-09-02 | Triethoxysilane
998-30-1
|
$8.00 | 1KG | 99% | Henan Fengda Chemical Co., Ltd | ||
 |
2026-06-30 | Triethoxysilane
998-30-1
|
1kg | 98% | 1000kg | Shaanxi Dideu New Materials Co. Ltd |
-
- Triethoxysilane
998-30-1
- 99%
- HEFEI ANBANG CHEMICAL CO., LTD.
-
- Triethoxysilane
998-30-1
- $8.00
- 99%
- Henan Fengda Chemical Co., Ltd
-
- Triethoxysilane
998-30-1
- 98%
- Shaanxi Dideu New Materials Co. Ltd
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