Description

Solvent Red 218 is a high-performance, oil-soluble synthetic dye belonging to the anthraquinone class, known for its excellent color strength and stability. This compound is critical for providing vivid, durable red coloration in non-aqueous systems where lightfastness and chemical resistance are paramount. It is an essential raw material for manufacturers in the plastics, coatings, and specialty ink industries seeking consistent, high-quality pigmentation.

Application

• Plastics Coloring: Primary application for coloring a wide range of polymers, including polystyrene (PS), polycarbonate (PC), and polymethyl methacrylate (PMMA), offering excellent dispersion and heat stability during processing.
• Industrial Coatings and Paints: Used in solvent-based coatings, automotive finishes, and industrial paints to achieve bright, weather-resistant red shades.
• Specialty Inks: A key component in high-performance printing inks, including for plastics and metals, due to its solubility in organic solvents and good printability.
• Wood Stains and Varnishes: Imparts transparent to semi-transparent red tones in wood treatment products, enhancing grain appearance.
• Waxes and Polishes: Employed to color synthetic waxes, shoe polishes, and other cosmetic or industrial polish formulations.
• Lubricants and Greases: Used for color-coding different grades of industrial lubricants and greases for easy identification.

Basic Information

Product Name	Solvent Red 218
CAS No.	82347-07-7
Molecular Formula	C24H20N2O2
Molecular Weight	368.43 g/mol
Synonyms	1-[[4-(Phenylazo)phenyl]azo]-2-naphthol; C.I. Solvent Red 218; Oil Red 218; Ceres Red 218; Anthraquinone Red 218; 1-[(E)-[4-[(E)-Phenyldiazenyl]phenyl]diazenyl]naphthalen-2-ol; Red 218; Plastic Red 218
EINECS	Contact for details

Quality Control

Every batch of Solvent Red 218 is manufactured and tested under a strict quality management system to ensure batch-to-batch consistency and performance. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request, detailing key parameters such as color strength, purity, and solubility.

Storage

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

Specification

Item	Specification
Appearance	Red powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Solubility (in Toluene)	Complete, clear solution
Lightfastness	≥ 6-7 (Blue Scale)

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