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Silane

SiH4

DESCRIPTION: Silane (SiH4) is a colorless, toxic, noncorrosive, spontaneously flammable gas with a repulsive, choking odor, which may form explosive mixtures with air. Silane also reacts violently with heavy metal halides and most halogen compounds.

APPLICATION: Silane is used as a silicon precursor in the chemical vapor deposition (CVD) of silicon dioxide, silicon nitride, polysilicon, epitaxial silicon and amorphous silicon films.

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SILANE
GRADE ELECTRONIC NITRIDE VLSI SIGMA 3*
Critical Assay 99.9% 99.99% 99.999% 99.9999%**
Nitrogen < 40 ppm < 25 ppm < 2 ppm < 1 ppm
Oxygen < 10 ppm < 10 ppm < 1 ppm < 0.2 ppm
Total Hydrocarbons < 40 ppm < 10 ppm < 0.5 ppm < 0.15 ppm
Carbon Dioxide < 10 ppm (+CO) < 5 ppm (+CO) < 1 ppm < 0.1 ppm
Carbon Monoxide - - < 1 ppm < 0.1 ppm
Water < 3 ppm < 3 ppm < 1 ppm < 0.5 ppm
Argon < 20 ppm < 5 ppm < 4 ppm < 0.5 ppm
Chlorosilanes < 10 ppm < 1 ppm < 0.1 ppm < 0.1 ppm
Helium - - - < 10 ppm
Hydrogen - - - < 20 ppm
Disilane - - - < 0.5 ppm
Disiloxane - - - < 0.1 ppm
Resistivity (ohm/cm) > 1,000 > 2,500 > 10,000 > 10,000
Valve Material 316L SS 316L SS 316L SS 316L SS
Valve Design Diaphragm Diaphragm Diaphragm Diaphragm
CGA/DISS Connection 350 350 350/632 350/632
* Metals furnished upon request. ** Excluding hydrogen

 

Molecular Weight:
32.11
Specific Volume:
12.1 cf/lb @ NTP
Boiling Point:
-168.7°F @ 1 atm
CAS No.:
7803-62-5
Hazards:
Inhalation and Flammability
Safety Data: ACGIH - TLV: 5 ppm
LC50: 19,000 ppm
Physical Properties Data:
  Critical Temperature: 25.8 °F
Critical Pressure: 702.5 psia

 

SILANE          
Cylinder Data/Size A AL B C  
Internal Volume (liters): 44 30 17 7 Custom fills available upon request
Contents (grams): 14,000 - 5,000 5,000 2,000 500 - 100
Pressure @ 70°F (psig): 1,400 - 730 1,000 750 585 - 120
RFO Size (inches): 0.010 0.014 0.020 0.030 0.040  
Maximum Flow (scf/h): 62.4 122.2 249.4 561.2 997.7  
Pressure (psia): 1,090        
DOT Label: Red, Flammable Gas UN Number: UN 2203  
DOT Class: 2.1 Cylinder: Aluminum or steel alloy  
Recommended OmniGas® Panels: Purgeable panel for toxic gases - Model No. 58PA200SVA
Shelf Life: 2 years

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