Description

Solvent Red 23 is a synthetic organic colorant belonging to the azo dye class, identified by CAS No. 85-86-9. This versatile solvent dye is valued for its strong, vivid red coloration and excellent solubility in a wide range of non-polar to moderately polar organic media. It is primarily sought after by manufacturers in the plastics, ink, and coatings industries for coloring polymers, printing inks, and specialty finishes. The product offers consistent batch-to-batch quality, ensuring reliable performance in demanding industrial applications.

Application

• Plastics and Polymer Coloring: Used for mass coloration of polystyrene (PS), polycarbonate (PC), and other engineering plastics.
• Printing Inks: Imparts a bright red hue in flexographic, gravure, and specialty solvent-based ink formulations.
• Industrial Coatings and Paints: A key colorant for lacquers, wood stains, and automotive refinish coatings.
• Waxes and Polishes: Colors paraffin waxes, shoe polishes, and other wax-based products.
• Office Supplies: Used in the manufacture of stamp pad inks and permanent markers.
• Fuel and Oil Markers: Employed as a dye for marking fuels, lubricants, and industrial oils for identification.

Basic Information

Product Name	Solvent Red 23
CAS No.	85-86-9
Molecular Formula	C24H20N4O
Molecular Weight	380.44 g/mol
Synonyms	Sudan Red G; C.I. Solvent Red 23; 1-[[4-(Phenylazo)phenyl]azo]-2-naphthalenol; Oil Red G; Ceres Red G; Fat Red G; Sudan Red G; Azoic Red 3G
EINECS	201-635-8

Quality Control

Our Solvent Red 23 is manufactured under a strict quality management system to ensure consistent purity and performance. Each batch is subjected to rigorous analytical testing, including spectrophotometric analysis for color strength and purity, and thin-layer chromatography (TLC) to confirm identity and the absence of subsidiary dyes. A comprehensive Certificate of Analysis (COA) detailing assay, hue, and solubility is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Reddish-brown powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Ash Content	≤ 0.5%
Solubility (in Toluene)	Complete, clear solution

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.