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Technical Datasheet | Supplied by GreenChemicals SPA
GC OB 1 by GreenChemicals is a 2, 2'-(1, 2-ethenediyldi-4, 1-phenylene) bisbenzoxazole whitening agent. It is suitable for whitening chemical fibers, such as polyester-, nylon- and polypropylene fibers. It can be used in polymerization process. GC OB 1 shows compatibility with hard PVC, ABS, EVA, polystyrene and polycarbonate.
Product Type
Optical Brighteners / Whitening Agents
Chemical Composition
2,2'-(1,2-Ethenediyldi-4,1-phenylene) bisbenzoxazole
CAS Number
Physical Form
Powder, Crystal
Product Status
Applications/ Recommended for
  • PS (Polystyrene)
  • PP
  • UPR
  • PVC
  • Other Thermoplastic > EVA
  • ABS
  • PC
  • PA, Nylon
  • Polymerization
  • Visual aspect & aesthetics > Whitening / brightening

GC OB 1 Properties


Value & Unit
Test Condition
Test Method
> 98.50 %
Volatile component
< 0.50 %
Melting point
355.0 - 360.0 °C

Compatiblity with other products

Find products that are predicted to be compatible with GC OB 1.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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