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Key Documents

215120

Sigma-Aldrich

Silicon tetrachloride

99%

Synonym(s):

STC, Tetrachlorosilane

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About This Item

Linear Formula:
SiCl4
CAS Number:
Molecular Weight:
169.90
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23

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.

Pictograms

Skull and crossbonesCorrosion

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

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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