in not given byproducts: As, H2, H2O; refluxing for 1/2 h;;

in solid matrix Irradiation (UV/VIS); arsenic sublimed at 300-375°C into an argon/ozone stream and codeposited at 15+/-2 K for 6-10 h, irrdn. at 290-1000 nm for 15 min; detn. by IR-spectroscopy;

in neat (no solvent) glass pumped; purified O2 introduced; sealed; heated slowly to 650°C; homogenized at 650°C for 7 h; cooled to 400°C; transferred to another furnace (200°C) vertically; undissolved oxides condensed at cold end; detd. by absorption spectra;