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289388

Sigma-Aldrich

Silicon tetrachloride

99.998% trace metals basis

Synonym(s):

STC, Tetrachlorosilane

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About This Item

Linear Formula:
SiCl4
CAS Number:
10026-04-7
Molecular Weight:
169.90
EC Number:
233-054-0
MDL number:
MFCD00011229
UNSPSC Code:
12352103
PubChem Substance ID:
24857194
NACRES:
NA.23

Key Documents

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vapor density

5.86 (vs air)

Quality Level

200

vapor pressure

420 mmHg ( 37.7 °C)

assay

99.998% trace metals basis

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 is a highly reactive and volatile inorganic compound widely utilized as a precursor in both solution-based and vapor-phase deposition processes. It plays a critical role in the synthesis of high-purity silicon-based materials such as silicon dioxide (SiO2) and silicon nitride (Si₃N₄), which are essential in a broad range of high-performance applications such as semiconductor industry, optics and photonics. Additionally, it is also used in the manufacture of high-purity silica glass, advanced ceramics, and energy storage components.

Application

Silicon tetrachloride can be used:
  • A precursor in the chemical vapor deposition (CVD) process to deposit silicon onto graphite substrates. This approach results development of high-performance anodes for lithium-ion batteries.
  • A precursor material in the hydrogen thermal plasma (H-plasma) process to synthesize silicon nanospheres, which are suitable for use as anode materials in lithium-ion batteries.

Features and Benefits

Silicon tetrachloride exhibits:
  • High Purity (99.998%): Ensures minimal contamination, crucial for optics and photonics applications
  • Ideal for Semiconductor applications: Its ultra-high purity supports fabrication of advanced integrated circuits, wafers, and solar cells

pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

signalword

Danger

Hazard Classifications

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

target_organs

Respiratory system

supp_hazards

EUH014,EUH071

Storage Class

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

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Faceshields, Gloves, Goggles

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Certificates of Analysis (COA)

Lot/Batch Number
SHBK4428
SHBJ0715
SHBH0583V
SHBF2521V
SHBG2090V

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J R Piascik et al.
Dental materials : official publication of the Academy of Dental Materials, 25(9), 1116-1121 (2009-04-21)
The overall goal of this research was to develop a practical method to chemically modify the surface of high strength dental ceramics (i.e. zirconia) to facilitate viable, robust adhesive bonding using commercially available silanes and resin cements. Investigation focused on
Sherif Zein El Abedin et al.
Accounts of chemical research, 40(11), 1106-1113 (2007-05-25)
Due to their wide thermal windows, ionic liquids can be regarded as the missing link between aqueous/organic solutions and high-temperature molten salts. They can be employed efficiently for the coating of other metals with thin layers of tantalum, aluminum, and
Roman A Sandler et al.
Journal of vision, 15(9), 16-16 (2015-08-01)
Receptive field identification is a vital problem in sensory neurophysiology and vision. Much research has been done in identifying the receptive fields of nonlinear neurons whose firing rate is determined by the nonlinear interactions of a small number of linear
C Schulze Isfort et al.
Toxicology letters, 186(3), 148-151 (2008-12-31)
Synthetic nanoscaled metal oxides are mainly produced by pyrogenic decomposition of precursors in the gas phase using a hot-wall or plasma reactor. Due to their low production rate and limited scalability, these processes are of minor technical relevance in manufacturing
Baker Jawabrah Al-Hourani et al.
Bioorganic & medicinal chemistry letters, 22(6), 2235-2238 (2012-02-22)
A series of novel 5-substituted 1H-tetrazoles as cyclooxygenase-2 (COX-2) inhibitors was prepared via treatment of various diaryl amides with tetrachlorosilane/sodium azide. All compounds were tested in cyclooxygenase (COX) assays in vitro to determine COX-1 and COX-2 inhibitory potency and selectivity.
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