Methyltriethoxysilane
- CAS No.
- 2031-67-6
- Chemical Name:
- Methyltriethoxysilane
- Synonyms
- MTES;TRIETHOXYMETHYLSILANE;a162;ND-27;A 162;DK203;HD-120;CM9050;KH- 132;Silquest A
- CBNumber:
- CB3853296
- Molecular Formula:
- C7H18O3Si
- Molecular Weight:
- 178.3
- MDL Number:
- MFCD00009066
- MOL File:
- 2031-67-6.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| Triethoxymethylsilane for synthesis | 8.18819 | 250ML | $86.1 |
| Triethoxymethylsilane 99% | 175579 | 50g | $69.3 |
| Triethoxymethylsilane 99% | 175579 | 250g | $88.4 |
| Triethoxymethylsilane >98.0%(GC) | M0451 | 25mL | $21 |
| Triethoxymethylsilane >98.0%(GC) | M0451 | 500mL | $66 |
| More product size | |||
| Melting point | <-40°C |
|---|---|
| Boiling point | 141-143 °C(lit.) |
| Density | 0.895 g/mL at 25 °C(lit.) |
| vapor density | >1 (vs air) |
| vapor pressure | 11 mm Hg ( 20 °C) |
| refractive index |
n |
| Flash point | 75 °F |
| storage temp. | Store at <= 20°C. |
| form | liquid |
| Specific Gravity | 0.896 |
| color | colorless |
| Odor | Mild odor |
| Viscosity | 0.8mm2/s |
| Water Solubility | INSOLUBLE |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| Sensitive | Moisture Sensitive |
| BRN | 1742453 |
| Dielectric constant | 3.8500000000000001 |
| Stability | Moisture-sensitive. Flammable - note low flash point. Incompatible with acids, oxidizing agents, moisture, water. |
| InChI | 1S/C7H18O3Si/c1-5-8-11(4,9-6-2)10-7-3/h5-7H2,1-4H3 |
| InChIKey | CPUDPFPXCZDNGI-UHFFFAOYSA-N |
| SMILES | CCO[Si](C)(OCC)OCC |
| LogP | -2.4-2.2 |
| CAS DataBase Reference | 2031-67-6(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | N811L6SAVL |
| NIST Chemistry Reference | Silane, triethoxymethyl-(2031-67-6) |
| EPA Substance Registry System | Triethoxymethylsilane (2031-67-6) |
| UNSPSC Code | 12352103 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS02 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H316-H320-H226 | |||||||||
| Precautionary statements | P501-P240-P210-P233-P243-P241-P242-P264-P280-P370+P378-P337+P313-P305+P351+P338-P303+P361+P353-P332+P313-P403+P235 | |||||||||
| PPE | Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter | |||||||||
| Risk Statements | 10 | |||||||||
| Safety Statements | 16 | |||||||||
| RIDADR | UN 1993 3/PG 3 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | VV4640000 | |||||||||
| F | 10-21 | |||||||||
| Autoignition Temperature | 220 °C | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29310095 | |||||||||
| Storage Class | 3 - Flammable liquids | |||||||||
| Hazard Classifications | Flam. Liq. 3 | |||||||||
| Toxicity | LD50 orally in Rabbit: 15700 mg/kg | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Methyltriethoxysilane price More Price(28)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 8.18819 | Triethoxymethylsilane for synthesis | 2031-67-6 | 250ML | $86.1 | 2026-04-30 | Buy |
| Sigma-Aldrich | 175579 | Triethoxymethylsilane 99% | 2031-67-6 | 50g | $69.3 | 2026-04-30 | Buy |
| Sigma-Aldrich | 175579 | Triethoxymethylsilane 99% | 2031-67-6 | 250g | $88.4 | 2026-04-30 | Buy |
| TCI Chemical | M0451 | Triethoxymethylsilane >98.0%(GC) | 2031-67-6 | 25mL | $21 | 2026-04-30 | Buy |
| TCI Chemical | M0451 | Triethoxymethylsilane >98.0%(GC) | 2031-67-6 | 500mL | $66 | 2026-04-30 | Buy |
Methyltriethoxysilane Chemical Properties,Uses,Production
Description
Methyltriethoxysilane is an alkylalkoxysilane. It is a clear, colorless liquid with an odor characteristic of alcohols. It hydrolyzes slowly in the presence of moisture to form reactive silanols. These react further to produce oligosiloxanes and then polysiloxanes.
As a Filler Modifier, Methyltrimethoxysilane is used mainly to render a wide range of surfaces and materials water repellent (e.g. mineral fillers, pigments, glass, cardboard). It may be used pure or in solution to treat fillers, using suitable mixing equipment. It may be necessary to first pre-treat the substrate with water and/or a catalyst. It is also used in the production of silicone resins and condensation-curing silicone rubber, used as an important component in sol-gel systems.
As one of the most common Alkoxy Crosslinkers, Methyltrimethoxysilane has high reactivity that precedes by nucleophilic substitution usually in the presence of acid or base catalysts.
Chemical Properties
Colorless clear liquid
Uses
Methyltriethoxysilane is used in production of silicone polymers or silicone resin. It is used in non-metal surface treatment, non-aqueous polymer preparation, manufacture of semi-conductors, coatings and sealants. It finds application as cross linking agent and an adhesion promoter.
Flammability and Explosibility
Flammable
Toxics Screening Level
The initial threshold screening level (ITSL) for methyltriethoxysilane is 23 μg/m3 based on an annual averaging time.
Methyltriethoxysilane Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Zhangjiagang Xinya Chemical Co., Ltd. | +86-0512-58980899 +86-13915696858 | sales@zjgxinyachem.com | China | 44 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +86-15350571055 | Sibel@chuanghaibio.com | China | 8737 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 | sales1@chuanghaibio.com | China | 5218 | 58 |
| LY Global chemicals co.,ltd . | +86-1837154342 | info@lychems.cn | China | 968 | 58 |
| Capot Chemical Co.,Ltd. | +86-（0）57185586718 +86-13336195806 | sales@capot.com | China | 29626 | 60 |
| Hangzhou Bayee Chemical Co., Ltd. | 0086-571-86990109 | rachelhoo@bayeechem.com | China | 104 | 55 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21531 | 55 |
| Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8618017249410 | jack.li@time-chemicals.com | China | 1796 | 55 |
| ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 | ivan@atkchemical.com | China | 32998 | 60 |
| career henan chemical co | +86-0371-86658258 | sales@coreychem.com | China | 29766 | 58 |
View Lastest Price from Methyltriethoxysilane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-05-28 | Methyltriethoxysilane
2031-67-6
|
$1.70 | 10kg | 99% | 10000kg | Hebei Chuanghai Biotechnology Co,.LTD | |
 |
2026-03-20 | Methyltriethoxysilane
2031-67-6
|
$1.00 | 1PCS | 99% | 10 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-07-17 | Methyltriethoxysilane
2031-67-6
|
$3.44-4.69 | 200kg | 99.28% | 8000 tons per year | Iota silicone oil (Anhui) Co.,ltd. |
-
- Methyltriethoxysilane
2031-67-6
- $1.70
- 99%
- Hebei Chuanghai Biotechnology Co,.LTD
-
- Methyltriethoxysilane
2031-67-6
- $1.00
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- Methyltriethoxysilane
2031-67-6
- $3.44-4.69
- 99.28%
- Iota silicone oil (Anhui) Co.,ltd.
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