For professionals in the chemical and manufacturing industries, a thorough understanding of product specifications is paramount when sourcing essential raw materials. Solvent Red 23 (CAS 85-86-9), a widely used azo dye, is no exception. Its consistent quality and adherence to precise specifications are critical for achieving desired results in applications ranging from plastics coloration to ink formulations.

Key Physical and Chemical Properties of Solvent Red 23

Solvent Red 23, also known by synonyms such as Oil Red or Scarlet B, is an oil-soluble dye. Its typical physical appearance is a yellowish-red powder. Understanding its solubility profile is key to its effective use:

  • Solubility: It is largely insoluble in water but demonstrates good solubility in various organic solvents. Notably, it is soluble in benzene and chloroform, moderately soluble in acetone and ether, and slightly soluble in ethanol and xylene. This solvency dictates its suitability for different industrial media.
  • Color Index: Its CI Number is 26100, signifying its specific coloristic properties.
  • Melting Point: Solvent Red 23 typically melts around 199 °C with decomposition, indicating its thermal limitations and processing considerations.
  • Stability: The dye is generally stable under recommended storage conditions (+5°C to +30°C) and is incompatible with strong oxidizing agents.

Technical Specifications for Manufacturers and Buyers

When you buy Solvent Red 23 from a reputable supplier, you can expect adherence to specific technical parameters that ensure performance:

  • Purity: High-purity grades, often 97% or higher as determined by HPLC, are commonly available from manufacturers.
  • Hue and Strength: The dye provides a distinct red-brown hue with good tinting strength, typically specified within a certain percentage range (e.g., 95-105%).
  • Heat Resistance: For applications involving heat, such as polymer processing, its heat resistance (often up to 260°C) is a critical specification.
  • Light Fastness: Good light fastness is important for applications where the colored product will be exposed to light over time.
  • Residue on Mesh: Specifications regarding residue on a specific mesh size (e.g., 80 mesh) help ensure product fineness and absence of coarse particles.
  • Volatile Matter: Low volatile matter content (e.g., 1.0% max at 105°C) indicates product stability and purity.

Procuring Solvent Red 23 in China

For procurement professionals seeking to purchase Solvent Red 23, sourcing from Chinese manufacturers and suppliers often presents an opportunity to obtain these specifications at competitive prices. Reputable suppliers will provide detailed product documentation, including Safety Data Sheets (SDS) and Certificates of Analysis (COA), which outline all relevant technical specifications. Engaging with these suppliers ensures you receive material that meets your exact needs for viscosity, color intensity, and thermal stability.

Understanding these specifications is fundamental to making informed purchasing decisions. By partnering with experienced suppliers, you can reliably source high-quality Solvent Red 23 that meets the demanding requirements of your industrial processes.