Chemoluminescence H 4000Bright Chemiluminescence During the Solid-Phase Reaction of Uranium(IV) Sulfate and Sodium Perxenate Powders. -Simple mixing of U(SO4)2·4H2O and Na4XeO6·8H2O with a glass spatula without trituration results in greenish luminescence visible to the naked eye even in a slightly darkened room. The reaction of the powders resulting in the excitation of uranyl ions occurs anomalously quickly for a solid phase reaction. -(KHAZIMULLINA*, L. N.; ANTIPIN, V. A.; MAMYKIN, A. V.; TANANAEV, I. G.; KAZAKOV, V. P.; MYASOEDOV, B. F.; Mendeleev Commun.