Eversorb 47S High Flash Point UV Absorber — Same Protection, Higher Safety
25 Jun, 2026
Same UV Protection Performance, Higher Safety Standard
Next-Generation High Flash Point UV-477 Solution
Eversorb® 47S — Breaking the Low Flash Point Barrier of Conventional UV-477, Without Compromising Performance
Eversorb® 47S, developed by Everlight Chemical, delivers equivalent UV protection while raising the flash point dramatically to 123°C — clearing the threshold for non-hazardous classification and offering a more compliant, competitive option for demanding markets.
Market Position and Pain Points of UV-477
UV-477 effectively absorbs UV energy in the 300–400 nm range, significantly suppressing yellowing, color fading, and degradation in coatings and adhesives exposed to prolonged outdoor conditions. Its low interference with metal catalysts and amine-based crosslinking systems has made it a widely adopted industry standard.
However, with a flash point of approximately 42°C, commercial UV-477 is classified as a Class 3 Flammable Liquid under most international regulations. This classification imposes additional compliance requirements for international shipping, warehousing, and in-plant handling — raising logistics costs and adding complexity to supply chain management.
| Property | Commercial UV-477 | Eversorb® 47S |
|---|---|---|
| Chemical Type | Triazine (HPT), Liquid | Triazine (HPT), Liquid |
| Flash Point | ~42°C | 123°C ↑ |
| Hazardous Classification | Class 3 Flammable Liquid | Non-Class 3 Hazardous |
| Weathering Performance (ΔE @2000 hr) | 1.77 | 1.65 (Equivalent) |
| 60° Gloss Retention (@2000 hr) | 96% | 97% (Equivalent) |
| Appearance | Yellow Liquid | Yellow Liquid |
| Formulation Compatibility | Good | Good (Equivalent) |
Eversorb® 47S — Higher Flash Point, No Compromise on Performance
Eversorb® 47S is an advanced reformulation developed by Everlight Chemical to address the low flash point limitation of conventional UV-477. Through formulation engineering, the flash point is elevated to 123°C while maintaining equivalent UV protection — removing it from Class 3 flammable liquid classification and substantially simplifying global logistics compliance.
| 123°C Flash Point Non-Class 3 Flammable Global Shipping Compliant |
2,000 hr Weathering Test Duration ASTM G154 Cycle 1 QUV-340nm |
1.65 ΔE @2000 hr 2% loading, 30μm dry film Equivalent to UV-477 |
Both datasets confirm that Eversorb® 47S closely tracks commercial UV-477 in color difference (ΔE) and 60° gloss retention throughout the 2,000-hour test, validating that the flash point upgrade comes with no sacrifice in UV protection performance.
Applications & Target Markets
The core advantage of Eversorb® 47S is a direct drop-in upgrade — existing formulations require no adjustment, yet immediately gain the benefits of a higher safety classification.
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► High-Performance Exterior Coatings
For exterior wall paints, bridge anti-corrosion coatings, and other applications with prolonged UV exposure, Eversorb® 47S delivers outstanding anti-yellowing and gloss retention over 2,000 hours of weathering, while meeting on-site hazardous material handling requirements. |
► Automotive & Transportation Coatings
Many OEM supply chains enforce strict in-plant restrictions on flammable materials. Eversorb® 47S reduces storage risk and compliance costs while delivering the color stability and gloss retention performance demanded by automotive specifications. |
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► Wood & Furniture Coatings
Wood coating facilities often have limited hazardous material storage capacity. The high flash point of Eversorb® 47S significantly eases compliance requirements, while its excellent anti-yellowing performance aligns well with low-hazard raw material preferences in green manufacturing. |
► Export to EU, US & Regulated Markets
Under EU CLP and US DOT regulations, flammable liquid thresholds are set at ~60°C. Commercial UV-477 (~42°C) falls under strict controls, while Eversorb® 47S (123°C) offers a straightforward path to simplified import/export documentation. |
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If you currently use commercial UV-477 and are looking to: (1) reduce hazardous material compliance costs in logistics and storage; (2) meet stricter fire safety standards at your facility; or (3) expand into markets with stringent dangerous goods regulations — Eversorb® 47S offers a direct drop-in replacement at the same loading level, with compliance benefits from the very first batch.
With a flash point of 123°C and weathering performance on par with conventional UV-477, Eversorb® 47S breaks the long-standing safety bottleneck in triazine UV absorbers — delivering a solution that is safer to ship, easier to store, and ready for the world's most regulated markets. This reflects Everlight Chemical's commitment to advancing specialty chemistry for lasting customer value.
Everlight Chemical provides full application testing support to help you evaluate the suitability of Eversorb® 47S in your specific formulation system and ensure performance meets your product requirements.
Insights and Innovations
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