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Optical Brightening Agent OB-1 2018-08-03T05:46:37+00:00
Fluorescent brightener 393

Optical Brightening Agent OB-1 | CAS 1533-45-5

  • CAS No.: 1533-45-5
  • EINECS No.: 216-245-3
  • Molecular Formula: C28H18N2O2

Product Information of optical brightening agent OB-1

  • Product Name: Optical Brightening Agent OB-1
  • Molecular Mass: 414.46
  • Synonyms: 2,2′-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole; 2,2′-(Vinylenedi-p-phenylene)bisbenzoxazole; 4,4′-BIS(2-BENZOXAZOLYL)STILBENE; optical whitening agent OB-1; Fluorescent brightener 393; Optical brightener OB-1

Specifications of optical brightening agent OB-1

Items Specifications
Appearance Bright yellow crystalline powder
Purity ≥ 99%
Melting point 357-359 °C
Volatile content ≤ 0.50%
Ash content ≤ 0.10%

Product Name: Fluorescent brightener 393Properties of optical brightening agent OB-1

Optical brightening agent OB-1 is yellow crystal powder. It is insoluble in water, soluble in high boiling point organic solvents such as phenyl-chloride. Optical brightening agent OB-1 (Fluorescent brightener OB-1) is an excellent oxazole brightener with stable performance, which has good heat resistance, sunlight resistance, chlorine bleaching resistance and migration resistance.

Applications of optical brightening agent OB-1

Optical brightening agent OB-1 is suitable for shaping various kinds of plastics and their products under high temperature. It has an extra ideal whitening effect on polyester-cotton blend fabric. It can be used for whitening polyester melt.