Bayville Chemical Supply Company Inc 70-G East Jefryn Boulevard Deer Park, New York, 11729 USA Telephone: 631-586-4309 Fax: 631-254-5591 E-Mail:
Bayville Chemical Supply Company Inc70-G East Jefryn BoulevardDeer Park, New York, 11729  USA           Telephone: 631-586-4309      Fax: 631-254-5591      E-Mail: 




UHP Grade, 99.998% pure vol% minimum

(excluding SiH4 and higher Silanes)


Disilane is a pyrophoric, colorless gas. It is used for rapid low temperature deposition of epitaxial silicon, amorphous silicon and silicon-based dielectrics. Disilane is usually shipped as a pure liquefied gas or in mixtures with helium or hydrogen.



Formula:                                  Si2H6

CAS Number:                          1590-87-0

Molecular Weight:                    62.22

Boiling Point:                            -14.5oC (1 atm)

Specific Volume:                      0.3367 l/g (-14.5oC)

Critical Temperature:               150.85oC

Resistivity:                                > 1000 ohm cm (n-type)

Pressure:                                 33 psig (20oC)

Odor:                                        Repulsive

Synonyms:                               Disilicane, Silicon



Hazard Information:

Major Hazards                     Pyrophoric

Flammable Limits                LFL: 0.2%, UFL: Unknown

Exposure Limit                    5 ppm (estimated)

UN Number                         UN3161 (liquefied)

DOT Class                           2.1 (Flammable Gas)

Proper Shipping Name        Liquefied Gas, 

                                             Flammable, nos (Disilane)


Maximum Impurities (Gas Phase):

O2 +Ar                      1 ppmv

N2                             2 ppmv

Siloxanes                 5 ppmv

Higher Silanes       50 ppmv

Chlorosilanes          0.2 ppmv

SiH4                  1000 ppmv

CH4                          1 ppmv

CO2                          1 ppmv

H2O                          1 ppmv


GHS Classification

     Flammable gas, Category 1

     Gas under pressure, Compressed gas

     Acute Toxicity (Inhalation), Category 4



Signal Word                         DANGER

Hazard Statement(s)

            Extremely flammable gas

            Contains gas under pressure; may explode if heated

            Harmful if inhaled

Precautionary Statement(s)


            Keep away from heat, sparks, open flame, and hot surfaces - No smoking. Avoid             breathing gas. Use only outdoors or in a well-ventilated area.


            Leaking gas fire: Do not extinguish, unless leak can be stopped safely. Eliminate             all ignition sources if safe to do so. IF INHALED: Remove victim to fresh air and             keep at rest in a position comfortable for breathing. Call a POISON CENTER or             doctor/physician if you feel unwell.


            Store in a well-ventilated place. Protect from sunlight.

Other Hazards which do not Result in Classification

            May cause asphyxia. May cause frostbite upon sudden release of compressed            gas

Where to Find Us:

Bayville Chemical
70 East Jefryn Boulevard
Suite G
Deer Park, NY 11729

Phone: 631 586-4309

What's New

New larger location

As of August 2014, we have moved to this new, larger, modern facility to better service your needs.


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