strontium aluminate

A long-afterglow phosphorescent pigment that charges under sunlight or interior light and releases a steady glow for hours in the dark. Available in sky blue, yellow-green, violet, orange, and red tones, this glow in dark powder works in both solvent and water-based systems, making it a practical luminescent pigment for paints, inks, craft art, nails, and safety-marking applications.

Kolortek's strontium aluminate-based glow in the dark powder delivers long-duration afterglow in a range of emission colors — from yellow-green and blue-green to violet, orange, and red — making it a reliable base material for paints, coatings, inks, and decorative applications. Available in both standard and water-based formulations, the photoluminescent powder charges rapidly under ambient or UV light and releases stored energy as a sustained, visible glow in darkness.

KT-GYG03 SC is a Yellow Green strontium aluminate phosphorescent pigment in the fine 12–25μm particle size range — the standard fine grade in Kolortek's glow-in-the-dark series, designed for coatings, printing inks, plastics compounding, and applications where particle size must remain within tight tolerances for smooth film formation. 

KT-GBG02 is a Blue Green strontium aluminate phosphorescent pigment in the coarse 65–75μm particle size range — a glow-in-the-dark pigment that absorbs ambient light (sunlight, fluorescent, LED) during exposure and releases it as a sustained blue-green glow after the light source is removed. 

Glow in the Dark Pigments are phosphorescent powders that absorb light energy from natural or artificial sources and re-emit it as a visible glow in darkness. Unlike fluorescent pigments, which require a continuous light source to produce their effect, phosphorescent pigments store energy and release it gradually after the light source is removed. They are used across safety, decorative, cosmetic, and industrial applications where passive light emission in dark conditions is required.