in diethyl ether freshly prepared, moist AgN3 covered with water cooled to 0°C; addn. of soln. of I2 in ether cooled to 0°C under shaking;; decanting etheric layer at low temp. very fast through dry folder filter into flask with calcined Na2SO4; drying 5 min.; evapn. of ether with dry air until pptn., then in desiccator; washing with small amt. of petroleum ether; (drying); impurity: I2;;
