Cadmium arsenide (Cd3As2) is an inorganic semimetal in the II-V family. It exhibits the Nernst effect.
Molar mass：487.08 g/mol
Appearance：solid, dark grey
Melting point：716 °C (1,321 °F; 989 K)
Solubility in water：decomposes in water
Crystal structure：Tetragonal, tI160
Cadmium arsenide is used in infrared detectors using the Nernst effect, and in thin-film dynamic pressure sensors. It can be also used to make magnetoresistors, and in photodetectors.
Cadmium arsenide can be used as a dopant for HgCdTe.