ChemicalBook >> CAS DataBase List >>Octadecyltrimethoxysilane
Octadecyltrimethoxysilane
- CAS No.
- 3069-42-9
- Chemical Name:
- Octadecyltrimethoxysilane
- Synonyms
- TriMethoxy;TRIMETHOXYOCTADECYLSILANE;DK261;DK729;OctadecyltriMethoxys;STEARYLTRIMETHOXYSILANE;Octadecyltrimethoxysilan;trimethoxyoctadecyl-silan;OCTADECYLTRIMETHOXYSILANE;TriMethoxy(octadecyl)sila
- CBNumber:
- CB3403134
- Molecular Formula:
- C21H46O3Si
- Molecular Weight:
- 374.67
- MDL Number:
- MFCD00043060
- MOL File:
- 3069-42-9.mol
Last updated:2025-04-07 11:06:11
| Product description | Number | Pack Size | Price |
| Trimethoxy(octadecyl)silane technical grade, 90% | 376213 | 5ml | $51.01 |
| Trimethoxy(octadecyl)silane technical grade, 90% | 376213 | 25ml | $165.3 |
| Octadecyltrimethoxysilane >85.0%(GC) | O0256 | 25mL | $96 |
| Trimethoxy | 291644 | 5g | $345 |
| Octadecyltrimethoxysilane | O148538 | 250mg | $45 |
| More product size | |||
| Melting point | 16-17 °C(lit.) |
|---|---|
| Boiling point | 170 °C (0.1 mmHg) |
| Density | 0.883 g/mL at 25 °C(lit.) |
| vapor pressure | 0.001Pa at 25℃ |
| refractive index |
n |
| Flash point | 284 °F |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | Chloroform (Slightly) |
| form | liquid |
| Specific Gravity | 0.883 |
| color | Colourless |
| Water Solubility | 190-437000ng/L at 20℃ |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| BRN | 5791830 |
| Stability | Stable. Incompatible with strong oxidizing agents. Moisture sensitive. |
| InChIKey | SLYCYWCVSGPDFR-UHFFFAOYSA-N |
| LogP | 6 |
| CAS DataBase Reference | 3069-42-9(CAS DataBase Reference) |
| FDA UNII | A5R7Q56VX6 |
| NIST Chemistry Reference | Octadecyltrimethoxysilane(3069-42-9) |
| EPA Substance Registry System | Silane, trimethoxyoctadecyl- (3069-42-9) |
| UNSPSC Code | 12352103 |
| NACRES | NA.23 |
Octadecyltrimethoxysilane price More Price(15)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 376213 | Trimethoxy(octadecyl)silane technical grade, 90% | 3069-42-9 | 5ml | $51.01 | 2025-07-31 | Buy |
| Sigma-Aldrich | 376213 | Trimethoxy(octadecyl)silane technical grade, 90% | 3069-42-9 | 25ml | $165.3 | 2025-07-31 | Buy |
| TCI Chemical | O0256 | Octadecyltrimethoxysilane >85.0%(GC) | 3069-42-9 | 25mL | $96 | 2025-07-31 | Buy |
| Usbiological | 291644 | Trimethoxy | 3069-42-9 | 5g | $345 | 2021-12-16 | Buy |
| TRC | O148538 | Octadecyltrimethoxysilane | 3069-42-9 | 250mg | $45 | 2021-12-16 | Buy |
Octadecyltrimethoxysilane Chemical Properties,Uses,Production
Chemical Properties
Colorless transparent liquid
Uses
OTS is used for the development of self assembled monolayers(SAMs). OTS is also used to modify the silica dielectric surface in organic field effect transistors.
Uses
For preparing hydrophobic coatings and self-assembled monolayers.
General Description
Trimethoxy(octadecyl)silane (OTS) is an important alkylsilane that can form strong covalent bonds with silicon oxide and serves as a potential lubricant for micro electro mechanical systems (MEMS). OTS is largely used for surface chemical modification, modifying silica resulted in an increased charge carrier mobility for a variety of vacuum deposited and solution cast organic semiconductors.
Octadecyltrimethoxysilane Preparation Products And Raw materials
Raw materials
Preparation Products
Global( 308)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hubei Changfu Chemical Co., Ltd. | +86-02784396550 +86-17721064038 | sales@cfsilanes.com | China | 475 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | +86-29-81148696 +86-17392712697 | 1022@dideu.com | China | 3996 | 58 |
| Sichuan Zhuoyu Yantang Technology Co., Ltd. | +8613288715578 | sales@sichuanzyyt.com | China | 12223 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 | sales1@chuanghaibio.com | China | 5251 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531151365 | mina@chuanghaibio.com | China | 18126 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20173 | 58 |
| Shandong Deshang Chemical Co., Ltd. | +86-0531-8875-2665 +8613153039501 | info@deshangchem.com | China | 661 | 58 |
| Hebei Zhuanglai Chemical Trading Co Ltd | +86-16264648883 | niki@zlchemi.com | China | 7245 | 58 |
| Hebei Junhua Import and Export Co., LTD | +85259680964 | junhua1@hb-junhua.com | China | 933 | 58 |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-2158073036 | info@dakenam.com | China | 13505 | 58 |
Related articles
- Multifaceted Studies on Octadecyltrimethoxysilane: From Air/Water Interface Reactions to Nanodevice Applications
- Octadecyltrimethoxysilane (OTMS) is an organosilicon compound which is used for preparing hydrophobic coatings and self-assemb....
- Apr 7，2025
View Lastest Price from Octadecyltrimethoxysilane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-11-10 | Octadecyltrimethoxysilane
3069-42-9
|
US $0.00-0.00 / kg | 1kg | 99% | 1000 | Hebei Junhua Import and Export Co., LTD | |
 |
2025-11-10 | n-Octadecyltrimethoxysilane
3069-42-9
|
US $0.00-0.00 / kg | 0.10000000149011612kg | 96% | 200tons | Hubei Changfu Chemical Co., Ltd. | |
 |
2025-09-25 | n-Octadecyltrimethoxysilane
3069-42-9
|
US $8.00-0.60 / KG | 1KG | 99% | g-kg-tons, free sample is available | Henan Fengda Chemical Co., Ltd |
-
- Octadecyltrimethoxysilane
3069-42-9
- US $0.00-0.00 / kg
- 99%
- Hebei Junhua Import and Export Co., LTD
-
- n-Octadecyltrimethoxysilane
3069-42-9
- US $0.00-0.00 / kg
- 96%
- Hubei Changfu Chemical Co., Ltd.
-
- n-Octadecyltrimethoxysilane
3069-42-9
- US $8.00-0.60 / KG
- 99%
- Henan Fengda Chemical Co., Ltd
3069-42-9(Octadecyltrimethoxysilane)Related Search:
N-OCTADECYLTRICHLOROSILANE
3-Chloropropyltrimethoxysilane
3-Aminopropyltrimethoxysilane
Trimethoxypropylsilane
Trimethoxysilylpropanethiol
Trimethoxysilane
Vinyltrimethoxysilane
N-OCTADECYLTRIETHOXYSILANE
Dichloromethylvinylsilane
Phenyltriethoxysilane
1of4
OCTADECYLTRIMETHOXYSILANE
N-OCTADECYLTRIMETHOXYSILANE
STEARYLTRIMETHOXYSILANE
Silane, trimethoxyoctadecyl-
TriMethoxy(octadecyl)silane technical grade, 90%
trimethoxyoctadecyl-silan
OCTADECYLTRIMETHOXYSILANE, TECH., 90%
OCTADECYLTRIMETHOXYSILANE TECH 90%
N-OCTADECYLTRIMETHOXYSILANE 95+%
N-OCTADECYLTRIMETHOXYSILANE (85% N-ISOMER)
Octadecyltrimethoxysilan
n-Octodecyltrimethoxysilane
Octadecyltrimethoxysilane, 90% ,tech.,
1-(Trimethoxysilyl)octadecane
OctadecyltriMethoxysilane, tech., 90% 25ML
Stearyltrimethoxysilane
Trimethoxyoctadecylsilane
OctadecyltriMethoxys
TriMethoxy(octadecyl)sila
OctodecyltriMethoxysilane
Trimethoxysilyloctadecane
18,18,18-trimethoxyoctadecylsilicon
Octadecyltrimethoxysilane>
Trimethoxy(octadecyl)silane,90%
Aksci Technical GradeCtadecyl-Trimethoxysilane
TIANFUCHEM--3069-42-9--Octadecyltrimethoxysilane in stock
TRIMETHOXYOCTADECYLSILANE
TriMethoxy
DK261
DK729
Octadecyltrimethoxysilane (>85%)
Octadecyltrimethoxysilane,90%
Trimethoxy(octadecyl)silane,95%
Octadecyltrimethoxysilane IOTA 51251
3069-42-9
CH3CH217SiOCH33
C21H46O3Si
C21H46O4Si
Organometallic Reagents
Organosilicon
Silane Coupling Agents (Intermediates)
Trialkoxysilanes
Si-O Compounds
Si (Classes of Silicon Compounds)
Silane Coupling Agents
Alkoxy Silanes
Hydrophobing Agents
Alkyl
Functional Materials
Si (Classes of Silicon Compounds)
Silane Coupling Agents
Silane Coupling Agents (Intermediates)
Si-O Compounds
Trialkoxysilanes
