... source for minutes.Material: Strontium Aluminate based.Appearance: Yellowish crystal powder.Average particle ... color: Yellow-green / blue-green.Water-resistant, water proof treated.Free of dangerous, toxic, ... , glow in the dark powder, photoluminescent pigment, photoluminescent powder, photo luminescent pigment, photo ... of organic mediums including plastic, rubber, paint, fiber, glass, resin, wax, ink ...