Basic information
- CAS
3069-42-9- Standard SMILES
CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC- InChIKey
SLYCYWCVSGPDFR-UHFFFAOYSA-N- Molecular formula
- C21H46O3Si
- Average molar mass
- 374.7 g/mol
- Monoisotopic mass
- 374.32162186
Overview
used to form self-assembled monolayers for high contrast patterned adsorption of bovine serum albumin and deriviatives
Names & identifiers
- Preferred name
- Octadecyltrimethoxysilane
- IUPAC
- trimethoxy(octadecyl)silane
- English name
- Octadecyltrimethoxysilane
- Molecular formula
- C21H46O3Si
- Molecular weight
- 374.67
Names & synonyms
Octadecyltrimethoxysilane3069-42-9n-OctadecyltrimethoxysilaneTrimethoxyoctadecylsilaneSilane, trimethoxyoctadecyl-A5R7Q56VX6DTXSID40883733LSX-6817TSL-8185TSL-8186KH-311O-0256
Show more names
TriMethoxyDK261DK729OctadecyltriMethoxysOctadecyltrimethoxysilantrimethoxyoctadecyl-silan
OTMS-silaneRefChem:164046DTXCID401023229221-339-2Trimethoxy(octadecyl)silaneStearyltrimethoxysilaneOctadecyl-trimethoxysilaneMFCD00043060
Database identifiers
- CAS
3069-42-9- PubChem CID
- 76486
- DTXSID
DTXSID40883733- UNII
- A5R7Q56VX6
- EC Number
- 221-339-2
- Nikkaji
- J205.382I
Properties
Computed structural properties
- Topological polar surface area
- 27.7 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 20
- Heavy atoms
- 25
- Formal charge
- 0
- Complexity
- 249
Experimental & physicochemical properties
Chemical ClassesMetals -> Metalloid Compounds (Silicon)
Physical DescriptionLiquid; [Sigma-Aldrich MSDS]
Physicochemical properties
- Melting point
- 16 · 16-17 °C(lit.)
- Boiling point
- 170 °C · 170 °C (0.1 mmHg)
- Density
- 0.883 g/mL · 0.883 g/mL at 25 °C(lit.)
- vapor pressure
- 0.001 Pa · 0.001Pa at 25℃
- refractive index
- 20 · n20/D 1.439(lit.)
- Flash point
- 284 °F · 284 °F
- storage temp.
- Inert atmosphere,Room Temperature
- solubility
- Chloroform (Slightly)
- form
- liquid
- color
- Colourless
- Specific Gravity
- 0.883 · 0.883
- Water Solubility
- 190 · 190-437000ng/L at 20℃
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 40.5% (30 of 74) of reports.
Warning
H315 (59.5%): Causes skin irritation [Warning Skin corrosion/irritation]
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 74 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory Information
Chemical: Silane, trimethoxyoctadecyl-
PMN - indicates a commenced PMN (Pre-Manufacture Notices) substance.
REACH registered substance: Trimethoxyoctadecylsilane (EC: 221-339-2)
Other Safety InformationEvaluation - Chemicals that are unlikely to require further regulation to manage risks to environment
Hazards SummaryA skin and strong eye irritant; [Sigma-Aldrich MSDS] See n-Butyltrimethoxysilane.
Hazard Classes and CategoriesSkin Irrit. 2 (59.5%)
Safety data
- F
- 10-21
- PPE
- Eyeshields, Gloves, type ABEK (EN14387) respirator filter
- wgk
- 1
- tsca
- TSCA listed
- hs_code
- 29319090
- risk_code
- 36/37/38
Chemistry & industry
Uses & manufacturing
UsesUsed to form self-assembled monolayers for high contrast patterned adsorption of bovine serum albumin and derivatives. [ChemIDplus]
General Manufacturing InformationSilane, trimethoxyoctadecyl-: ACTIVE
Applications
UsesOTS 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.
UsesFor preparing hydrophobic coatings and self-assembled monolayers.
General DescriptionTrimethoxy(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.
Suppliers100 total
国药集团化学试剂有限公司86-21-63210123 · [email protected]
梯希爱(上海)化成工业发展有限公司021-67121386 · [email protected]
上海阿拉丁生化科技股份有限公司400-6206333 13167063860 · [email protected]
湖北科孚乐材料科技有限公司027-84459282 13720265353 · [email protected]
武汉欣扬瑞和化学科技有限公司153-07155313 15307155313 · [email protected]
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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