Encyclopedia > Arsine

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Name Arsenic trihydride
Chemical formula AsH3
Appearance Colourless gas
Formula weight 78.0 amu
Melting point 157 K (-116 °C)
Boiling point 210 K (-63 °C)
Density 1.7 ×103 kg/m3 (liquid)
Solubility 0.07 g in 100g water
ΔfH0gas 66 kJ/mol
ΔfH0liquid 64 kJ/mol
ΔfH0solid ? kJ/mol
S0gas, 1 bar 223 J/mol·K
Ingestion Extremely toxic, deadly. Headache is an early symptom.
Inhalation Deadly. Smells like garlic.
Skin Contact should be avoided.
Eyes Contact should be avoided.
More info Hazardous Chemical Database (http://ull.chemistry.uakron.edu/erd/chemicals/7/6080)
SI units were used where possible. Unless otherwise stated, standard conditions were used.

Disclaimer and references

Arsine (AsH3) is a highly toxic gaseous chemical compound of arsenic and hydrogen. Synonyms include arseniuretted hydrogen, arsenous hydride, arsenic trihydride, and hydrogen arsenide. Some organic compounds based on arsine, such as lewisite, adamsite[?], Clark I[?] and Clark II[?], have been developed for chemical warfare.

Arsine is also used in the semiconductor industry for depositing arsenic.

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