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ChemicalBook >> CAS DataBase List >> Octadecyltrimethoxysilane

Octadecyltrimethoxysilane

Octadecyltrimethoxysilane price.
  • $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-;Trimethoxysilyloctadecane;18,18,18-trimethoxyoctadecylsilicon;TriMethoxy(octadecyl)silane technical grade, 90%;trimethoxyoctadecyl-silan ;TRIMETHOXYOCTADECYLSILANE
Price33 Properties Safety Information Description
33 prices
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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 90%
  • Packaging25g
  • Price$16
  • Updated2026-05-28
  • Buy
  • 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%
  • Packaging100g
  • Price$47
  • Updated2026-05-28
  • Buy
  • ManufacturerAK Scientific
  • Product numberE683
  • Product descriptionOctadecyl-trimethoxysilane 97%(GC)
  • Packaging25g
  • Price$49
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ98338
  • Product descriptionOctadecyl-trimethoxysilane 95%
  • Packaging25g
  • Price$36
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ98338
  • Product descriptionOctadecyl-trimethoxysilane 95%
  • Packaging100g
  • Price$99
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ98338
  • Product descriptionOctadecyl-trimethoxysilane 95%
  • Packaging5g
  • Price$12
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberE683
  • Product descriptionOctadecyl-trimethoxysilane 97%(GC)
  • Packaging10g
  • Price$29
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberE683
  • Product descriptionOctadecyl-trimethoxysilane 97%(GC)
  • Packaging5g
  • Price$16
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ98338
  • Product descriptionOctadecyl-trimethoxysilane 95%
  • Packaging10g
  • Price$21
  • Updated2026-06-04
  • Buy
  • ManufacturerAK Scientific
  • Product numberE683
  • Product descriptionOctadecyl-trimethoxysilane 97%(GC)
  • Packaging100g
  • Price$137
  • Updated2026-06-04
  • 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 tech
  • Packaging500g
  • Price$361
  • Updated2026-06-04
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR55171
  • Product descriptionTrimethoxy(octadecyl)silane tech
  • Packaging5g
  • Price$21
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA003V0B Trimethoxy(octadecyl)silane 90% 25g $16 2026-05-28 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% 100g $47 2026-05-28 Buy
AK Scientific E683 Octadecyl-trimethoxysilane 97%(GC) 25g $49 2026-06-04 Buy
AK Scientific J98338 Octadecyl-trimethoxysilane 95% 25g $36 2026-06-04 Buy
AK Scientific J98338 Octadecyl-trimethoxysilane 95% 100g $99 2026-06-04 Buy
AK Scientific J98338 Octadecyl-trimethoxysilane 95% 5g $12 2026-06-04 Buy
AK Scientific E683 Octadecyl-trimethoxysilane 97%(GC) 10g $29 2026-06-04 Buy
AK Scientific E683 Octadecyl-trimethoxysilane 97%(GC) 5g $16 2026-06-04 Buy
AK Scientific J98338 Octadecyl-trimethoxysilane 95% 10g $21 2026-06-04 Buy
AK Scientific E683 Octadecyl-trimethoxysilane 97%(GC) 100g $137 2026-06-04 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 tech 500g $361 2026-06-04 Buy
Apolloscientific OR55171 Trimethoxy(octadecyl)silane tech 5g $21 2026-06-04 Buy
Next Last

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
color :Colourless
Specific Gravity :0.883
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

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.

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.

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Suppliers and manufacturers

Hubei kefule Material Technology Co., Ltd Weihai Zhaochuan Biotechnology Co., Ltd. Nanjing Quanxi New Materials Co., Ltd Shanghai Boyle Chemical Co., Ltd. Tianjin Zhongxin Chemtech Co., Ltd. J & K SCIENTIFIC LTD. Meryer (Shanghai) Chemical Technology Co., Ltd. INTATRADE GmbH TCI (Shanghai) Development Co., Ltd. Beijing HwrkChemical Technology Co., Ltd