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LUMINESCENT HYDRATED STRONTIUM-FLUOSILICATES, PROCESS FOR THEIR PREPARATION, THEIR USE AND PROCESS FOR PRODUCING BLACK LIGHT BY MEANS OF THESE COMPOSITIONS
LUMINESCENT HYDRATED STRONTIUM-FLUOSILICATES, PROCESS FOR THEIR PREPARATION, THEIR USE AND PROCESS FOR PRODUCING BLACK LIGHT BY MEANS OF THESE COMPOSITIONS
Hydrated strontium fluosilicates activated with divalent europium, having the formula: Sr1-xEux2+SiF6x2H2O wherein 0x/=0.5, are novel luminophors which emit black light.
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