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Description:Photoluminescent pigment LY-4BW has a white or light yellow appearance in the day light and green in night, often used for road marking paint.
Technical Data Sheet
Product Name: Photoluminescence Pigment
Supplier’s code: LY-4BW
Major applications: used for road marking paint
Physical properties:
Typical chemical properties:
Chemical Family Name: strontium aluminate europium doped
Formula: Sr4Al14O25: Eu+2,Dy+3
Insoluble In: alkalis, Organic solvents
Decomposition by: acids, water
pH (after 100 hours in water): 10~12
Typical physical properties:
Appearance: Light yellow
Glowing color: yellow-green
Specific gravity: 3.4g/cm3
Particle size distribution: d50=about 200 um
Screen analysis: Max. 1% oversized particles on 300um.
Typical of light source :
Excitant illuminance: 1000 lx, D65 standard
Excitant Time: 10min
Temperature : 23℃
Measurement according to Din 67 510 Part 1
Afterglow intensity after 10min >820mcd/m2
60min >110mcd/m2