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Fluorescent Brightener 28

June 11, 2026

High-Quality Fluorescent Brightener 28 (CAS No. 4193-55-9)

Fluorescent Brightener 28 (Calcofluor White M2R, Tinopal UNPA-GX) is an anionic fluorescent whitening agent with excellent optical properties and biological staining capabilities. This technical-grade product serves diverse industrial and research applications where enhanced brightness and fluorescence detection are required.


Specfition

Item Specification
Appearance Light Yellow to Yellow Uniform Powder
Fluorescence Intensity (vs. Standard Sample), Points 130 ± 3
Whiteness Difference (vs. Standard Sample) ≥ -1.0
Moisture Content (105°C, 3 h), % ≤ 5.0
Water Insolubles, % ≤ 0.5

Applications

  • Textile Industry
  • Paper Industry
  • Detergent & Cleaning Products
  • Coatings & Paints
  • Plastics & Polymers
  • Printing Inks

Product Features

  • High whitening and brightening efficiency
  • Excellent UV absorption and fluorescence performance
  • Good thermal stability during processing
  • Outstanding compatibility with various formulations
  • Good light fastness and durability
  • Easy dispersion in aqueous and polymer systems
  • Effective at low addition levels
  • Suitable for a wide range of industrial applications

Packaging

  • 25 kg fiber drum with inner polyethylene liner
  • 25 kg kraft paper bag with PE liner
  • 25 kg plastic drum
  • Customized packaging available upon customer request

Storage Conditions

  • Store in a cool, dry, and well-ventilated warehouse.
  • Keep containers tightly sealed when not in use.
  • Protect from direct sunlight, excessive heat, and moisture.
  • Avoid contact with strong oxidizing agents and incompatible materials.
  • Store in original unopened packaging.
  • Handle in accordance with standard industrial chemical safety procedures.

Samples and further technical data can be provided upon request.
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