Solvent Red 52
Fluorescent Red F5B (Solvent Red 52) is an anthrapyridone fluorescent solvent dye with a very bright fluorescent red shade and heat resistance up to 305°C; light fastness is good in full shade and decreases as TiO2 is added. It can be used for coloring engineering plastics where a striking fluorescent red is wanted, including PS, ABS, PC and PMMA, and it extends to candles, waxes and inks. Popular for toys, promotional items and high visibility packaging.
Key Features
Technical Specifications
| Trade Name | Fluorescent Red F5B |
| C.I. NO. | 68210 |
| CAS NO. | 81-39-0 |
| EU NO | 201-346-7 |
| Chemical Group | Anthrapyridone |
| Solubility | Excellent in organic solvents |
Physical Data & Fastness Properties
| Light Fastness | Good to Excellent |
| Heat Resistance | 305°C |
Application Fields
This product is widely used in the following application fields, providing excellent coloring performance and durability:
- Nylon (PA)
- Polystyrene (PS)
- ABS
- Polycarbonate (PC)
- PET
- PMMA
Usage Instructions
Dose 0.02-0.3%; the fluorescent effect is fully developed at low loading. Processing up to 305°C is safe across common engineering plastics. Avoid heavy TiO2 loading since it dulls fluorescence. For spin dyeing or masterbatch, disperse uniformly before extrusion for consistent shade.
Frequently Asked Questions
What is Solvent Red 52 used for?
Solvent Red 52 is mainly used for transparent coloring of Nylon (PA), Polystyrene (PS), ABS, Polycarbonate (PC) and other polymers, and can also be used for masterbatch production.
What are the key properties of Solvent Red 52?
Solvent Red 52 offers a heat resistance of 305°C, and has light fastness rated Good to Excellent, and has a Anthrapyridone chemical structure.
What is the CAS number of Solvent Red 52?
The CAS number of Solvent Red 52 is 81-39-0, and its Colour Index number is C.I. 68210.
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