Solvent Yellow 21
Transparent Yellow 2G (Solvent Yellow 21) is a quinoline solvent dye with a reddish yellow shade and heat resistance of 180°C. It exhibits good light fastness, shows high color strength and excellent compatibility with Nylon, and is therefore recommended for coloring carpet nylon fibers. It also colors PS, ABS, PC and PMMA transparent shades economically, and its strong tinctorial yield keeps formulation cost low in fiber and plastics compounding.
Key Features
Technical Specifications
| Trade Name | Transparent Yellow 2G |
| C.I. NO. | 18690 |
| CAS NO. | 5601-29-6 |
| EU NO | 227-022-5 |
| Chemical Group | Quinoline |
| Solubility | Excellent in organic solvents |
Physical Data & Fastness Properties
| Light Fastness | Good to Excellent |
| Heat Resistance | 180°C |
Application Fields
This product is widely used in the following application fields, providing excellent coloring performance and durability:
- Nylon (PA)
Usage Instructions
Dose 0.05-0.5% for transparent reddish yellows in plastics; 0.1-1.0% in carpet nylon depending on depth. Stable to 180°C, matching PS and ABS processing and nylon dyeing windows. Add before extrusion or dissolve in the dyeing bath. High strength means accurate weighing to keep batches consistent.
Frequently Asked Questions
What is Solvent Yellow 21 used for?
Solvent Yellow 21 is mainly used for transparent coloring of Nylon (PA), and can also be used for masterbatch production.
What are the key properties of Solvent Yellow 21?
Solvent Yellow 21 offers a heat resistance of 180°C, and has light fastness rated Good to Excellent, and has a Quinoline chemical structure.
What is the CAS number of Solvent Yellow 21?
The CAS number of Solvent Yellow 21 is 5601-29-6, and its Colour Index number is C.I. 18690.
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