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215120

Sigma-Aldrich

Silicon tetrachloride

99%

Synonym(s):
STC, Tetrachlorosilane
Linear Formula:
SiCl4
CAS Number:
Molecular Weight:
169.90
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

vapor density

5.86 (vs air)

vapor pressure

420 mmHg ( 37.7 °C)

assay

99%

form

liquid

reaction suitability

core: silicon

bp

57.6 °C (lit.)

mp

−70 °C (lit.)

density

1.483 g/mL at 25 °C (lit.)

SMILES string

Cl[Si](Cl)(Cl)Cl

InChI

1S/Cl4Si/c1-5(2,3)4

InChI key

FDNAPBUWERUEDA-UHFFFAOYSA-N

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General description

Silicon tetrachloride (SiCl4) is an inorganic compound. It′s crystal structure is similar to that of carbon tetrachloride (CCl4). SiCl4 can be synthesized by the chlorination of silicon compounds (e.g. Mg2Si, SiC, SiO2/C).

Application

SiCl4 may be used;
  • in the preparation of high purity silicon, high purity silicon derived from silicon tetrachloride may find major applications in the semiconductors industry and in photovoltaic cells.
  • to dealuminate zeolite, mordenite.
  • as a coupling agent for the synthesis of amine from carboxylic acid and an amide.
  • in the synthesis of nanosilica.

Packaging

100 g in Sure/Seal™
1 kg in Sure/Seal™

Pictograms

CorrosionSkull and crossbones

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1A - STOT SE 3

Target Organs

Respiratory system

Supplementary Hazards

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Using hydrolysis of silicon tetrachloride to prepare highly dispersed precipitated nanosilica
Xiao Y, et al.
Chemical Engineering Journal, 283(1), 1-8 (2016)
Verma NK , et al.
Comprehensive Chemistry XI null
Dealumination of mordenite using silicon tetrachloride vapour
Klinowski J, et al.
Zeolites, 3(1), 5-7 (1983)
Silicon tetrachloride as a coupling reagent for amide formation
Chan TH and Wong LTL
The Journal of Organic Chemistry, 34(9), 2766-2767 (1969)
Zeolites treated with silicon tetrachloride vapour. IV. Acidity.
Anderson MW and Klinowski J
Zeolites, 6(6), 455-466 (1986)

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