Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride Chemical Properties

Boiling point:

22.3 °C

Density 

0.89 g/mL at 20 °C(lit.)

vapor pressure 

0Pa at 25℃

refractive index 

n20/D 1.3889

Flash point:

93 °F

storage temp. 

Flammables area

solubility 

DMSO (Sparingly), Methanol (Sparingly)

form 

Solution

Specific Gravity

0.89

color 

Clear yellow

Water Solubility 

reacts

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

InChI

1S/C26H58NO3Si.ClH/c1-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-24-27(2,3)25-23-26-31(28-4,29-5)30-6;/h7-26H2,1-6H3;1H/q+1;/p-1

InChIKey

WSFMFXQNYPNYGG-UHFFFAOYSA-M

SMILES

[Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CCC[Si](OC)(OC)OC

LogP

4.9

CAS DataBase Reference

27668-52-6(CAS DataBase Reference)

EPA Substance Registry System

3-(Trimethoxysilyl)propyl dimethyl octadecyl ammonium chloride (27668-52-6)

Safety Information

Hazard Codes 

T,F,Xn

Risk Statements 

11-23/24/25-36/38-39/23/24/25-36/37/38-10-20/21/22-36

Safety Statements 

16-26-36/37-45-7-37/39

RIDADR 

UN 1992 3/PG 2

WGK Germany 

2

F 

3-10

TSCA 

TSCA listed

HazardClass 

3.1

PackingGroup 

II

HS Code 

29319090

Storage Class

3 - Flammable liquids

Hazard Classifications

Acute Tox. 3 Dermal
Acute Tox. 3 Inhalation
Acute Tox. 3 Oral
Eye Irrit. 2
Flam. Liq. 2
STOT SE 1

Hazardous Substances Data

27668-52-6(Hazardous Substances Data)

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride Usage And Synthesis

Chemical Properties

Clear to straw liquid with amine (ammonia-like) odor.

Uses

DTSACl may be used for modification of silica.{61} It was used to functionalize Fe3O4/silica?core-shell nanoparticles. {62} DTSACl may be used as a precursor to form silica, 3 and MeMFI zeolite.{63} It acts as a mesopore-generating agent. {64}

General Description

Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (DTSACl) is an organosilane which can be used as a silica precursor. It forms an oil soluble solution that can act as an emulsion stabilizer.

Flammability and Explosibility

Not classified

Synthesis

1) Weigh ??-chloropropyltrimethoxysilane (2.782 kg, 14 moles) added to the 150-liter reaction kettle with condensation and reflux device, closed reaction kettle, open the kettle warming mechanism, in the 40-80 rpm stirring speed to make the reaction kettle warming to 40-50 ??, began to the reaction kettle drop-addition of octadecyldimethyl tertiary amine (2.976 kg, 10 moles), drop-addition time of 3 hours; warming to 140 ??, maintain a constant temperature, in the closed and mixed solvent reflux state reaction 36 hours to get the organosilicon quaternary ammonium salt product solution, with nuclear nucleus, and the reaction was completed in the following manner Mole), drop addition time is 3 hours; warming to 140 ??, maintain a constant temperature, in the closed and mixed solvent reflux state reaction 36 hours to get the silicone quaternary ammonium salt product solution, using nuclear magnetic resonance method to determine the conversion rate of silicone quaternary ammonium salt for 93%, to stop the reaction heating;

2) when the reaction kettle solution down to room temperature, hydrochloric acid to adjust the kettle silicone quaternary ammonium salt of pH to 5.5-6.5, homogenized and stirred for 5-10min, then filtered with 600-800 mesh diatomaceous earth to decolorize and remove impurities to obtain dimethyl octadecyl [3-(trimethoxysilyl)propyl] ammonium chloride.

Toxics Screening Level

The ITSL is being established as 170 μg/m3 with an annual average.

Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride(27668-52-6)Related Product Information

• Benzyl chloride
• Sodium chloride
• Ammonium dihydrogen phosphate
• Choline chloride
• Ammonium chloride
• Calcium chloride
• Polyvinyl chloride
• Propyl gallate
• allyltrimethylammonium chloride
• Propyl butyrate
• Molybdic acid
• Anisole
• m-Anisyl alcohol
• p-Anisidine
• Methoxyacetic acid
• Ammonium sulfate
• (Trifluoromethoxy)benzene
• Ammonium hydroxide