Optical Brightener OB by Afine Chemicals is 2,5-bis(5-tert-butyl benzoxazoly-2'-) thiophene-based optical brightener. It is mainly used in whitening of thermoplastic, polyvinyl chloride(PVC), polypropylene(PP) and polyester fiber.
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Optical Brightener OB properties
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| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Melting Point | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Purity | 0.0 Visible After Login | Visible After Login | Visible After Login |