Long-Afterglow Yellow-Green Luminous Powder

* Illustrative image for reference only. Actual product appearance and specifications may vary by manufacturer.

Photoluminescent Pigments Safety & Egress Signage

Long-Afterglow Yellow-Green Luminous Powder

Long-afterglow yellow-green luminous powder from Chinese manufacturers: high-brightness SrAl2O4:Eu,Dy grades for egress signage, tested to DIN 67510 / ISO 17398 decay requirements, 25 kg industrial packaging.

Composition:
SrAl2O4:Eu,Dy, high-brightness grade
Emission:
Yellow-green ≈ 520 nm
Decay Class:
Grades selected to meet DIN 67510 luminance-at-time requirements (e.g. L10 classification)

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Product Overview

For regulated safety signage — egress route marking, fire-equipment signs, photoluminescent stair nosings — the pigment must meet quantitative afterglow requirements, not simply glow. Specifications reference DIN 67510 luminance decay thresholds (measured at 10, 30 and 60 minutes after a defined excitation) and ISO 17398 classification of safety-sign performance. High-brightness yellow-green strontium aluminate grades are chosen for this duty precisely because their emission peak near 520 nm matches maximum dark-adapted eye sensitivity and their decay curve clears the classification thresholds with margin — provided the sign builder uses sufficient pigment loading and film thickness, since measured sign performance depends on the whole construction. Manufacturers listed here supply signage-grade powder with batch decay curves, excitation-spectrum data and formulation guidance for rigid signs, aluminum laminates and solvent-borne inks, supporting downstream certification testing of finished signs.

OEM & Customization Capabilities

  • Classification Support – decay curve data formatted for ISO 17398 / DIN 67510 sign certification.
  • Substrate Formulations – recommended loadings for rigid PVC, aluminum and self-adhesive constructions.
  • Batch Consistency – brightness binning with per-lot photoluminescence measurement reports.

Industry Applications

  • Photoluminescent Pigments
  • Safety & Egress Signage

Technical Specifications

CompositionSrAl2O4:Eu,Dy, high-brightness grade
EmissionYellow-green ≈ 520 nm
Decay ClassGrades selected to meet DIN 67510 luminance-at-time requirements (e.g. L10 classification)
Signage Standard ContextISO 17398 classification of safety sign photoluminescent performance
ExcitationCharges under daylight, fluorescent, LED and UV sources
ApplicationsEgress path marking, fire safety signs, stair-nosing inserts, watch dials

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