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40955

Methoxy(dimethyl)octadecylsilane

Name: Methoxy(dimethyl)octadecylsilane
Brand: ALDRICH

technical, ≥90% (GC)

Synonym(s):

Dimethylmethoxyoctadecylsilane, Dimethyloctadecylmethoxysilane, Octadecyldimethylmethoxysilane

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About This Item

Empirical Formula (Hill Notation):

C₂₁H₄₆OSi

CAS Number:

71808-65-6

Molecular Weight:

342.67

EC Number:

276-039-4

UNSPSC Code:

12352103

PubChem Substance ID:

57650036

Beilstein/REAXYS Number:

7346074

MDL number:

MFCD00042920

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Properties

grade

technical

assay

≥90% (GC)

form

solid

impurities

5-10% other C₁₈-isomers

refractive index

n20/D 1.444

density

0.83 g/mL at 25 °C (lit.)

SMILES string

CCCCCCCCCCCCCCCCCC[Si](C)(C)OC

InChI

1S/C21H46OSi/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-23(3,4)22-2/h5-21H2,1-4H3

InChI key

RUFRLNPHRPYBLF-UHFFFAOYSA-N

Description

General description

Methoxy(dimethyl)octadecylsilane(MDOS) is an organosilane with one methoxy group. It is a silane coupling agent which forms a self-assembled monolayer(SAM) on a variety of particles.

Application

MDOS can be used as an adhesion promoter between wool fiber and the polyethylene matrix that can be used to conserve waste of wool and poultry feathers. Wood fibre silanized with MDOS can be used as reinforcement to prepare polyethylene based composites with improved thermo-oxidative stability.

Silica spheres for HPLC colums were reported to be functionalized with methoxy(dimethyl) octadecylsilane. 1 Methoxy(dimethyl) octadecylsilane may be grafted on the surface of ZnO nanoparticles. 2

pictograms

GHS07

signalword

Warning

hcodes

H315,H319,H335

pcodes

P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Wool fibres functionalised with a silane-based coupling agent for reinforced polypropylene composites.

Conzatti L, et al.

Composites Part A: Applied Science and Manufacturing, 61, 51-59 (2014)

Global Trade Item Number

SKU	GTIN
40955-25ML	04061837485749