Description
Optical Brightener OB
Chemical Name:
2,5-Thiophenediylbis(5-tert-butyl-1,3-benzoxazole)
| Formula | C26H26N2O2S |  |
| MW | 430 | |
| CAS# | 7128-64-5 |
Synonym Name:
BASF Uvitex Ob, Tinopal OB, Fluorescent Brightener 184 (FB 184) , c.i.184, Fluorescent Brightener OB
Specification
| Appearance | Slight greenish-yellow powder |
| Dosage | 0.01-0.05% |
| Melting point | 196-200℃ |
| Purity | ≥99% |
| Solubility | (g/100 g solution) at 20° C: |
| Acetone | 0.5 |
| Chloroform | 14 |
| Dimethylformamide | 0.8 |
| Dioxane | 2 |
| n-Hexane | 0.2 |
| Methanol | ＜0.1 |
| Methylethylketone | 1.3 |
| Tricresylphosphate | 0.8 |
| Xylene | 5 |
Application:
>Optical Brighteners are used to offset the yellowness of a polymer and yield a whiter appearance. OB is used as a thermoplastic (PVC, PS, PE, PP, ABS) optical brightener. Also for coatings, printing inks, paints, dyes, manufactured fibers, synthetic leather, waxes, fats, and oils. Ob is a general-purpose optical brightener agent.
>Recommended concentrations: 0.02-5% depending on the application and degree of desired whiteness.
Handling and Safety:
>FDA approved for use in polymers subject to the limitations in 21 CFR §176.170(c).
>For additional handling and toxicological information, please consult us for Maternal Safety Date Sheet.
Package
25kg per fiber drum, 6*2 layer 12 drums per pallet, 5CBM per ton, or according to customers’ requirements.
TDS & MSDS
Tinopal & Uvitex OB, Optical Brightener OB, CAS 7128-64-5, FBA 184 msds
Tinopal & Uvitex OB, Optical Brightener OB, CAS 7128-64-5, FBA 184 tds
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Related Products
Optical brightener for plastics, cotton, detergent, paper
| Product | Synonyms | CAS Number | Features |
Optical Brightener For Plastics |
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| FP-127 | Uvitex FP | 40470-68-6 | the best OBA for PVC products |
| KCB | Hostalux KCB | 5089-22-5 | OBA for plastics and lacquer, especial for EVA |
| KSB | Telalux KSB | 7128-54-5 | OBA for transparent plastics, recycled PE/PP |
| KSN | Hostalux KSN | 5242-49-9 | OBA For high-temperature plastics, 100% counter |
| OB | Uvitex OB, Tinopal OB | 7128-64-5 | universal plastic OBA, also for ink, coating |
| OB-1 | Eastobrite OB-1 | 1533-45-5 | universal plastic OBA, green or yellow shade |
| PF | FBA 135 | 1041-00-5 | strong red shade |
Optical Brightener For Cotton |
|||
| 4BK | FBA 113 | 12768-91-1 | for cotton or with fabic blend, red or blue shade |
| ER-I | FBA 199 | 13001-39-3 | powder & liquid form, PE, PA, CA fiber, high temperature whitening |
| ER-II | FBA 199:1 | 13001-38-2 | powder & liquid form, PE, PA, CA fiber, lower temperature whitening |
| EBF | FBA 185 | 12224-41-8 | |
Optical Brightener For Detergent |
|||
| CBS-X | Tinopal CBS-X | 27344-41-8 | for detergent, soap, washing |
Optical Brightener For Paper |
|||
| VBL | FBA 85 | 12224-16-7 | for paper, also for cotton, vinylon, nylon |
| BBU | FBA 220 | 16470-24-9 | Replace VBL |
