Octadecyltrimethoxysilane CAS NO.3069-42-9

1. Introduction of Octadecyltrimethoxysilane

Octadecyltrimethoxysilane (CAS NO.3069-42-9) is one ki…

 
1. Introduction of Octadecyltrimethoxysilane

Octadecyltrimethoxysilane (CAS NO.3069-42-9) is one kind of colorless transparent liquid. Trimethoxy(octadecyl)silane is the IUPAC name of this chemical. Beside, this chemical belongs to Alkyl; Functional Materials; Si (Classes of Silicon Compounds); Silane Coupling Agents; Silane Coupling Agents (Intermediates); Si-O Compounds; Trialkoxysilanes; Alkoxy Silanes; Hydrophobing Agents. What's more, it is sensitive toward water, irreversibly degrading to a siloxane polymer.

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2. Basic information of Octadecyltrimethoxysilane

1) Properties:

(1)ACD/LogP: 8.02; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 8.02; (4)ACD/LogD (pH 7.4): 8.02; (5)ACD/BCF (pH 5.5): 733088.13; (6)ACD/BCF (pH 7.4): 733088.13; (7)ACD/KOC (pH 5.5): 549349.38; (8)ACD/KOC (pH 7.4): 549349.38; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 11; (12)Index of Refraction: 1.437; (13)Molar Refractivity: 80.47 cm³; (14)Molar Volume: 306.7 cm³; (15)Surface Tension: 25.1 dyne/cm; (16)Density: 0.857 g/cm³; (17)Flash Point: 143.2 °C; (18)Enthalpy of Vaporization: 51.02 kJ/mol; (19)Boiling Point: 292 °C at 760 mmHg; (20)Vapour Pressure: 0.00329 mmHg at 25°C.

2) The following information could be converted into the structure:

(1)Smiles: CO[Si](OC)(OC)CCCCCCCCCCCCCCCCCC
(2)Canonical SMILES: CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC
(3)InChI: 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
(4)InChIKey: SLYCYWCVSGPDFR-UHFFFAOYSA-N

3) Uses of Octadecyltrimethoxysilane

As an organosilicon compound, Octadecyltrimethoxysilane can be used for preparing hydrophobic coatings and self-assembled monolayers. Beside, it can be used for converting hydrophilic surfaces to hydrophobic surfaces and in certain areas of nanotechnology and analytical chemistry.