The Universal Selection Source:
Polymer Additives
by SpecialChem
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Technical Datasheet | Supplied by HPL Additives
2,5-Thiophenediylbis(5-tert.butyl-1,3-benzoxazole). Acts as an optical brightening agent. Can also be used as fluorescent whitening agent. Offers exceptional whitening properties, excellent resistance to heat, good light fastness and low volatility. Suitable for various polymers at all stages of processing. Particularly useful for engineering plastics including polyesters, polycarbonates, polyamides and acrylics, thermoplastic polyurethanes, PVC, polyolefins, styrene and copolymers. Recommended for indirect food contact.
Product Type
Optical Brighteners / Whitening Agents
Chemical Composition
CAS Number
SpecialChem additionnal informations based on CAS Number : 7128-64-5

Hansen Solubility Parameters

[18.8, 2.9, 2.9]
[δD - Dispersion force interactions, δP - Polar force interactions, δH - Hydrogen bond force interactions]

Please note, these HSP values are estimations. It is based upon the “like seeks like” principle. It splits an ingredients interactions into three parameters; δD (Dispersion force interactions), δP (Polar forces interactions) and δH (Hydrogen bond force interactions). Hansen Solubility Parameters can help you find a wide range of products that are predicted to be compatible with HITEX® -OB. A practical determination of these HSP values would provide higher certainty. Learn More.

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