A thiophene-based optical brightener that absorbs UV light and emits blue fluorescence, used to mask yellowing in plastics, synthetic fibers and detergents.
Full specification
- Molecular formula
- C26H26N2O2S
- Grades
- technicalhigh-purity
- Packaging
- 10 kg fibre drum · 25 kg fibre drum
- Appearance
- Light yellow to greenish-yellow crystalline powder
- Synonyms
- OB · 7128-64-5 · FWA 184 · Fluorescent Brightener OB · 2,2'-(2,5-thiophenediyl)bis(5-tert-butylbenzoxazole) · fluorescent whitening agent OB
Compliance & regulatory
Region: EU — Chemotto S.r.l., Milano
- REACH-aligned supply
- CLP-labelled
REACH REACHRegistration, Evaluation, Authorisation and Restriction of Chemicals — the EU chemicals regulation (EC 1907/2006). CLP CLPClassification, Labelling and Packaging — the EU regulation (EC 1272/2008) for hazard communication. SVHC SVHCSubstance of Very High Concern — flagged on the REACH Candidate List for possible authorisation or restriction.
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