... signs. High luminous. Long glowing duration. Photoluminescent powder (is called glow powder, luminous pigment , luminescent pigment , photoluminescent pigment ... power.It can be used in a variety of organic mediums including plastic,rubber,paint,fiber,glass, resin ... minutes.Material: Strontium Aluminate based. Appearance: Yellowish crystal powder.Dangerous: No.Toxic: No.Radiation: No.Dosage recommended ...