Optical Brightener KSN
Optical Brightener KSN is supplied by Shandong Grand Chemical for polyester fiber, PA fiber, PP fiber, engineering plastics. C.I. 368. CAS 5242-49-9. 4,4-Bis(5-methyl-2-benzoxazolyl)ethylene. Use the specification table below; figures that are not printed on the source product page are marked TBC or omitted.
Product photo on the source site uses the OB-1 yellow image file.
Specification
| C.I. No. | 368 |
|---|---|
| CAS | 5242-49-9 |
| Molecular formula | C26H20N2O2 |
| Formula weight | 428 |
| Melting point | 269–271 °C |
| Appearance | Yellowish-green crystal |
| Ionicity | Non-ionic |
| Shade | Brilliant white |
| Dosage (source) | 0.01–0.03%. |
| Packing | 25 kg fiber drum |
| Synonyms on source page | Hostalux KS, FBA 368 |
What this grade is for
- Polyester, PA and PP fibers plus engineering plastics.
- Melting point 269–271 °C on the source page.
Questions we actually get
What is KSN used for?
Optical Brightener KSN is listed for polyester fiber, PA fiber, PP fiber, engineering plastics.
Do you publish a price?
No. The live catalog does not list prices. Ask for a quote with your polymer or fiber, process temperature and monthly volume.
Can I get TDS / COA / SDS?
Yes — request the current document set by WhatsApp or email. This site does not host downloadable PDFs because the source site does not publish a document library.
