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Arsine

From Academic Kids

</table> Arsine (AsH3) is a flammable and 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. Exposure to arsine leads to massive intravascularhemolysis and renal failure. It has a high mortality rate. Arsine was formed temporarily, and then decomposed, in the old (but extremely sensitive) Marsh test for the presence of arsenic. da:Arsinja:アルシン

Properties

General

Name Arsenic trihydride
Chemical formula AsH3
Appearance Colourless gas

Physical

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

Thermochemistry

ΔfH0gas 66 kJ/mol
ΔfH0liquid 64 kJ/mol
ΔfH0solid ? kJ/mol
S0gas, 1 bar 223 J/mol·K

Safety

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/chemicals1/7/6075.html)

SI units were used where possible. Unless otherwise stated, standard conditions were used.

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