Octadecyltrimethoxysilane
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- $6 - $1522
- Product name: Octadecyltrimethoxysilane
- CAS: 3069-42-9
- MF: C21H46O3Si
- MW: 374.67
- EINECS:221-339-2
- MDL Number:MFCD00043060
- Synonyms:OCTADECYLTRIMETHOXYSILANE;STEARYLTRIMETHOXYSILANE;Silane, trimethoxyoctadecyl-;TriMethoxy(octadecyl)silane technical grade, 90%;trimethoxyoctadecyl-silan ;OCTADECYLTRIMETHOXYSILANE, TECH., 90%;OCTADECYLTRIMETHOXYSILANE TECH 90%;N-OCTADECYLTRIMETHOXYSILANE 95+%
26 prices
Selected condition：
Brand
- aablocks
- AK Scientific
- American Custom Chemicals Corporation
- Apolloscientific
- Crysdot
- Matrix Scientific
- Sigma-Aldrich
- SynQuest Laboratories
- TCI Chemical
- Thermo Scientific Chemicals
- TRC
- Usbiological
Package
- 250mg
- 5ml
- 5g
- 10g
- 25ML
- 25g
- 50g
- 100g
- 100.00g
- 250g
- 500g
- 1Kg
- 25 mL
- Manufactureraablocks
- Product numberAA003V0B
- Product descriptionTrimethoxy(octadecyl)silane 97%
- Packaging5g
- Price$6
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA003V0B
- Product descriptionTrimethoxy(octadecyl)silane 97%
- Packaging10g
- Price$10
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA003V0B
- Product descriptionTrimethoxy(octadecyl)silane 90%
- Packaging25g
- Price$16
- Updated2026-05-28
- Buy
- Manufactureraablocks
- Product numberAA003V0B
- Product descriptionTrimethoxy(octadecyl)silane 90%
- Packaging100g
- Price$47
- Updated2026-05-28
- Buy
- ManufacturerAK Scientific
- Product numberJ98338
- Product descriptionOctadecyl-trimethoxysilane,tech.
- Packaging100g
- Price$99
- Updated2021-12-16
- Buy
- ManufacturerAK Scientific
- Product numberE683
- Product descriptionOctadecyl-trimethoxysilane,tech.
- Packaging100g
- Price$133
- Updated2021-12-16
- Buy
- ManufacturerAmerican Custom Chemicals Corporation
- Product numberORS0000444
- Product descriptionN-OCTADECYLTRIMETHOXYSILANE 95.00%
- Packaging5G
- Price$118.65
- Updated2021-12-16
- Buy
- ManufacturerAmerican Custom Chemicals Corporation
- Product numberORS0000444
- Product descriptionN-OCTADECYLTRIMETHOXYSILANE 95.00%
- Packaging25ML
- Price$1125.09
- Updated2021-12-16
- Buy
- ManufacturerApolloscientific
- Product numberOR55171
- Product descriptionTrimethoxy(octadecyl)silane 95%
- Packaging100g
- Price$90
- Updated2021-12-16
- Buy
- ManufacturerApolloscientific
- Product numberOR55171
- Product descriptionTrimethoxy(octadecyl)silane 95%
- Packaging25g
- Price$28
- Updated2021-12-16
- Buy
- ManufacturerCrysdot
- Product numberCD42000635
- Product descriptionTrimethoxy(octadecyl)silane 90%
- Packaging500g
- Price$294
- Updated2021-12-16
- Buy
- ManufacturerCrysdot
- Product numberCD42000635
- Product descriptionTrimethoxy(octadecyl)silane 90%
- Packaging500g
- Price$294
- Updated2026-05-27
- Buy
- ManufacturerMatrix Scientific
- Product number206944
- Product descriptionOctadecyltrimethoxysilane
- Packaging100.00g
- Price$216
- Updated2026-05-18
- Buy
- ManufacturerSigma-Aldrich
- Product number376213
- Product descriptionTrimethoxy(octadecyl)silane technical grade, 90%
- Packaging25ml
- Price$186
- Updated2026-04-30
- Buy
- ManufacturerSigma-Aldrich
- Product number376213
- Product descriptionTrimethoxy(octadecyl)silane technical grade, 90%
- Packaging5ml
- Price$57.2
- Updated2026-04-30
- Buy
- ManufacturerSynQuest Laboratories
- Product number6183-1-33
- Product descriptionn-Octodecyltrimethoxysilane 95%
- Packaging100g
- Price$100
- Updated2021-12-16
- Buy
| Manufacturer | Product number | Product description | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|
| aablocks | AA003V0B | Trimethoxy(octadecyl)silane 97% | 5g | $6 | 2026-05-28 | Buy |
| aablocks | AA003V0B | Trimethoxy(octadecyl)silane 97% | 10g | $10 | 2026-05-28 | Buy |
| aablocks | AA003V0B | Trimethoxy(octadecyl)silane 90% | 25g | $16 | 2026-05-28 | Buy |
| aablocks | AA003V0B | Trimethoxy(octadecyl)silane 90% | 100g | $47 | 2026-05-28 | Buy |
| AK Scientific | J98338 | Octadecyl-trimethoxysilane,tech. | 100g | $99 | 2021-12-16 | Buy |
| AK Scientific | E683 | Octadecyl-trimethoxysilane,tech. | 100g | $133 | 2021-12-16 | Buy |
| American Custom Chemicals Corporation | ORS0000444 | N-OCTADECYLTRIMETHOXYSILANE 95.00% | 5G | $118.65 | 2021-12-16 | Buy |
| American Custom Chemicals Corporation | ORS0000444 | N-OCTADECYLTRIMETHOXYSILANE 95.00% | 25ML | $1125.09 | 2021-12-16 | Buy |
| Apolloscientific | OR55171 | Trimethoxy(octadecyl)silane 95% | 100g | $90 | 2021-12-16 | Buy |
| Apolloscientific | OR55171 | Trimethoxy(octadecyl)silane 95% | 25g | $28 | 2021-12-16 | Buy |
| Crysdot | CD42000635 | Trimethoxy(octadecyl)silane 90% | 500g | $294 | 2021-12-16 | Buy |
| Crysdot | CD42000635 | Trimethoxy(octadecyl)silane 90% | 500g | $294 | 2026-05-27 | Buy |
| Matrix Scientific | 206944 | Octadecyltrimethoxysilane | 100.00g | $216 | 2026-05-18 | Buy |
| Sigma-Aldrich | 376213 | Trimethoxy(octadecyl)silane technical grade, 90% | 25ml | $186 | 2026-04-30 | Buy |
| Sigma-Aldrich | 376213 | Trimethoxy(octadecyl)silane technical grade, 90% | 5ml | $57.2 | 2026-04-30 | Buy |
| SynQuest Laboratories | 6183-1-33 | n-Octodecyltrimethoxysilane 95% | 100g | $100 | 2021-12-16 | Buy |
Properties
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 :n20/D 1.439(lit.)
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.
InChI :1S/C21H46O3Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-25(22-2,23-3)24-4/h5-21H2,1-4H3
InChIKey :SLYCYWCVSGPDFR-UHFFFAOYSA-N
SMILES :CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC
LogP :6
CAS DataBase Reference :3069-42-9(CAS DataBase Reference)
NIST Chemistry Reference :Octadecyltrimethoxysilane(3069-42-9)
EPA Substance Registry System :Silane, trimethoxyoctadecyl- (3069-42-9)
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.
InChI :1S/C21H46O3Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-25(22-2,23-3)24-4/h5-21H2,1-4H3
InChIKey :SLYCYWCVSGPDFR-UHFFFAOYSA-N
SMILES :CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC
LogP :6
CAS DataBase Reference :3069-42-9(CAS DataBase Reference)
NIST Chemistry Reference :Octadecyltrimethoxysilane(3069-42-9)
EPA Substance Registry System :Silane, trimethoxyoctadecyl- (3069-42-9)
Safety Information
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Description
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.More related product prices
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Suppliers and manufacturers
Hubei Changfu Chemical Co., Ltd.
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Henan Fengda Chemical Co., Ltd
Henan Tianfu Chemical Co.,Ltd.
Hangzhou FandaChem Co.,Ltd.
n-Octadecyltrimethoxysilane
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