Octadecyltrichlorosilane

Octadecyltrichlorosilane
Names
	Preferred IUPAC name Trichloro(octadecyl)silane
	Other names Trichlorooctadecylsilane; Stearyltrichlorosilane
Identifiers
CAS Number	112-04-9 ;
3D model (JSmol)	Interactive image;
Abbreviations	ODTS
ChemSpider	7865 ;
ECHA InfoCard	100.003.573
EC Number	203-930-7;
PubChem CID	8157;
UNII	1QLE771PKE ;
CompTox Dashboard (EPA)	DTXSID50868051 ;
	InChI InChI=1S/C18H37Cl3Si/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-22(19,20)21/h2-18H2,1H3 Key: PYJJCSYBSYXGQQ-UHFFFAOYSA-N ; InChI=1/C18H37Cl3Si/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-22(19,20)21/h2-18H2,1H3 Key: PYJJCSYBSYXGQQ-UHFFFAOYAA;
	SMILES CCCCCCCCCCCCCCCCCC[Si](Cl)(Cl)Cl;
Properties
Chemical formula	C18H37Cl3Si
Molar mass	387.93 g·mol−1
Appearance	Colorless liquid
Density	0.984 g/mL, liquid
Boiling point	223 °C (433 °F; 496 K) at 10 Torr
Solubility	organic solvents, decomp by amines and alcohols
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	flammable, corrosive
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314
Precautionary statements	P280, P305+P351+P338, P310
NFPA 704 (fire diamond)	3 2 2
Related compounds
Related Chlorosilanes	Dodecyltrichlorosilane
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Octadecyltrichlorosilane (ODTS or n-octadecyltrichlorosilane) is an organosilicon compound with the formula CH₃(CH₂)₁₇SiCl₃. A colorless liquid, it is used as a silanization agent to prepare hydrophobic stationary phase, for reversed-phase chromatography.^[2]

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It is also evaluated for forming self-assembled monolayers on silicon dioxide substrates. Its structural chemical formula is CH₃(CH₂)₁₇SiCl₃. It is flammable and hydrolyzes readily with release of hydrogen chloride.

Dodecyltrichlorosilane, an ODTS analog with shorter alkyl chain, is used for the same purpose.

ODTS-PVP films are used in organic-substrate LCD displays.^[3]

[1] [1]
GHS: GESTIS 510649

[2] [2]
Pape, Peter G. (2017). "Silylating Agents". Kirk-Othmer Encyclopedia of Chemical Technology. pp. 1–15. doi:10.1002/0471238961.1909122516011605.a01.pub3. ISBN 9780471238966.

[3] [3]
XTECH, NIKKEI. "Sony Develops TFT Substrate Entirely Formed by Organic Materials". NIKKEI XTECH.

[2]

[1]

[3]

Octadecyltrichlorosilane

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References

Names


Preferred IUPAC name Trichloro(octadecyl)silane
Other names Trichlorooctadecylsilane Stearyltrichlorosilane
Identifiers
CAS Number	112-04-9^Y
3D model (JSmol)	Interactive image
Abbreviations	ODTS
ChemSpider	7865^N
ECHA InfoCard	100.003.573
EC Number	203-930-7
PubChem CID	8157
UNII	1QLE771PKE^Y
CompTox Dashboard (EPA)	DTXSID50868051
InChI InChI=1S/C18H37Cl3Si/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-22(19,20)21/h2-18H2,1H3^N Key: PYJJCSYBSYXGQQ-UHFFFAOYSA-N^N InChI=1/C18H37Cl3Si/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-22(19,20)21/h2-18H2,1H3 Key: PYJJCSYBSYXGQQ-UHFFFAOYAA
SMILES CCCCCCCCCCCCCCCCCC[Si](Cl)(Cl)Cl
Properties
Chemical formula	C₁₈H₃₇Cl₃Si
Molar mass	387.93 g·mol⁻¹
Appearance	Colorless liquid
Density	0.984 g/mL, liquid
Boiling point	223 °C (433 °F; 496 K) at 10 Torr
Solubility	organic solvents, decomp by amines and alcohols
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	flammable, corrosive
GHS labelling:^[1]
Pictograms
Signal word	Danger
Hazard statements	H314
Precautionary statements	P280, P305+P351+P338, P310
NFPA 704 (fire diamond)	3 2 2
Related compounds
Related Chlorosilanes	Dodecyltrichlorosilane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references