CAS · 15086-94-9
Product Overview
Solvent Red 43 is a high-purity dyes-pigments supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Appearance: | Powder |
|---|---|
| Dye content: | 95% min |
| Odor: | Odorless |
| Coloring strength: | 200g/l min |
| Solubility 90℃: | 9–12 |
| Loss on drying (135℃): | 1% max |
| Color difference: | 1% max |
| Mass percentage of chloride and sulfate: | 2% max |
| 2-(6-Hydroxy-3-oxo-3H-ton-9-yl) benzoic acid: | 1% max |
| 2-(Bromo-6-hydroxy-3-oxo-3H-ton-9-yl) benzoic acid: | 2% max |
| Total mold count: | 1000 cfu/g max |
| Mold and yeast count: | 1000 cfu/g max |
| Escherichia coli: | Not detectable |
| Lead (Pb): | 10 mg/kg max |
| Arsenic (As): | 2.0 mg/kg max |
| Mercury (Hg): | 1.0 mg/kg max |
| Manganese (Mn): | 50 mg/kg max |
Applications
1. Plastics and Polymer Coloring
Commonly used to color plastics such as polystyrene (PS), polyvinyl chloride (PVC), acrylics, polycarbonate, and polyethylene.
Offers high lightfastness and heat stability, making it suitable for thermoplastic processing.
2. Textile Dyeing
Occasionally applied in the dyeing of synthetic fibers, especially acetate and nylon, where water-insoluble dyes are preferred for uniform dispersion.
3. Industrial Coatings & Inks
Used in solvent-based paints, inks, and coatings where bright red color is desired.
Applied in printing inks, particularly for flexographic and gravure processes.
4. Leather Finishing
Solvent Red 43 is used in leather coloring, especially in solvent-based leather finishes, due to its deep shade and durability.
5. Cosmetic Applications
May be used (in controlled concentrations) in lipsticks, makeup, and nail polish, as permitted by local regulations.
Valued for its rich red hue and oil solubility.
6. Fuel and Lubricant Dyes
Utilized in the coloration of lubricants, gasoline, and hydrocarbon-based fuels to identify grades or brands and to mark products for tax purposes.
Benefits
✅ Vibrant Color Strength
Delivers a strong, vivid red color with excellent transparency in solution and polymers.
✅ Thermal Stability
Maintains color integrity at high processing temperatures in plastic manufacturing, often over 200°C.
✅ Light & Solvent Fastness
Exhibits good lightfastness and resistance to solvent bleeding, ensuring long-lasting coloration in demanding environments.
✅ Versatile Compatibility
Soluble in a wide range of organic solvents, making it highly flexible for formulators and manufacturers across different industries.
✅ Low Migration
Offers low migration in plastics and coatings, reducing risk of dye transfer or leaching.
Conclusion
Solvent Red 43 (CAS 15086-94-9) is a high-performance oil-soluble azo dye widely used in plastics, inks, fuels, and cosmetics. Its intense color, thermal resistance, and solvent compatibility make it a trusted choice for manufacturers seeking durable red pigmentation in organic and hydrophobic media.
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