Solvent Red 43 is a synthetic dye primarily used in non-aqueous applications due to its solubility in organic solvents. Its main applications include:
1. **Industrial Applications**:
- Used as a colorant for **fuels, oils, waxes, and lubricants** (e.g., marking or dyeing hydrocarbon-based products).
- Acts as a tracer dye in **petroleum products** for identification or leak detection.
2. **Plastics and Polymers**:
- Employed in coloring **plastics, synthetic resins, and other polymeric materials**.
3. **Inks and Coatings**:
- Used in **solvent-based inks, paints, and coatings** where oil solubility is required.
4. **Research and Chemical Staining**:
- Sometimes used in **microscopy or histology** for staining non-polar biological samples.
### Safety Note:
Solvent Red 43 is not approved for use in **food, cosmetics, or pharmaceuticals** due to potential toxicity concerns. Always check regulatory guidelines (e.g., FDA, EU) before industrial or commercial use.
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