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Arsine is a colorless, flammable, non-irritating, toxic gas with a mild garlic odor.

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Formula: AsH3

What Is Arsine Gas?

Arsine is a colorless, non-irritating, highly toxic gas with a mild garlic odor. It is part of electronic gases and is one of the simplest arsenic compounds. Its chemical formula is AsH3.

It is flammable and explosive and can get ignited by heat, flames, or sparks. Arsine is also soluble in water and has a boiling point of -62.5ºC. 

Generally, it ships in cylinders as a compressed liquefied gas.

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Further Specifications

Cylinder Sizes

  • Used in soldering, galvanizing, burnishing, and lead plating
  • Typically used in the semiconductor industry as a dopant.
  • Used for the synthesis of organoarsenic compounds.
  • As a result of flow and agitation, it can generate electrostatic charges.
Grade 5.5 Grade 6 Grade 6.5
Purity 99.9995% 99.9999% 99.99995%
Water < 2 ppmv < 350 ppbv < 100 ppbv
Nitrogen < 2 ppmv < 250 ppbv < 50 ppbv
Oxygen < 1 ppmv < 40 ppbv < 20 ppbv
Carbon Dioxide < 0.5 ppmv < 40 ppbv < 10 ppbv
Carbon Monoxide < 0.1 ppmv < 10 ppbv < 10 ppbv
Methane < 0.5 ppmv
C1-C2 < 500 ppbv < 100 ppbv
Argon < 50 ppbv < 50 ppbv
Germane < 50 ppbv < 50 ppbv
Hydrogen Sulfide < 50 ppbv
Silane < 50 ppbv
Chemical & Physical Properties
Molecular Weight 77.95
Specific Volume 5.0 cu. ft/lb
Pressure @ 70° F 204.6 psig
Valve Outlet CGA 350 DISS 632
Shipping Information
DOT Name Arsine
Hazard Class 2.3
DOT No. UN 2188
DOT Label Poison Gas/Inhalation Hazard, Flammable Gas
CAS No. 7784-42-1
Cylinder Size Fill Weight (lbs)
44L/Size 200 55
265 AL 60/40
150 AL 28

FAQs about Arsine

Is arsine gas safe?

Arsine is a highly toxic gas. Additionally, it is highly flammable and undergoes violent chemical changes at elevated pressure and temperature. Exposure to arsine can be lethal.

How is arsine gas made?

Arsine is typically formed when arsenic comes in contact with an acid or when water combines with a metallic arsenide.
Arsine may be produced from natural processes involving fungi and bacteria or from industrial processes involving soldering, welding, galvanizing, refining, and etching. Arsine can also be produced when lead storage batteries overcharge.

Are there alternate chemical names for arsine?

Yes. Arsine is also called arsenic hybrid, arsenic hydride, arsenic trihydride, arsenous hydride, hydrogen arsenide, and arseniuretted hydrogen.

**Moisture level guaranteed only when Electronic Fluorocarbons prepares the cylinders.
All concentrations are on a mol/mol basis unless otherwise stated.
Product sold on the basis of total impurities. Individual impurities may vary slightly.

**RFO available

*This gas not available for purchase online.