Description

Solvent Yellow 18 is a high-purity, oil-soluble monoazo dye widely used as a colorant for non-polar media. Its primary value lies in its excellent solubility in hydrocarbons, oils, and waxes, providing a strong, stable yellow hue. This product is essential for manufacturers in the plastics, fuel marking, and specialty ink industries seeking reliable and consistent coloration. It is also utilized in the coloring of lubricants, candles, and other petroleum-based products.

Application

• Coloration of hydrocarbon-based fuels and fuel markers.
• Mass coloration of polystyrene, ABS, and other oleophilic plastics.
• Manufacturing of specialty printing inks, particularly for non-porous substrates.
• Coloring of lubricating oils and greases.
• Production of colored candles and wax products.
• Staining of wood stains and polishes.
• Colorant for solvent-based wood coatings and varnishes.
• Research and development as a tracer dye in non-aqueous systems.

Basic Information

Product Name	Solvent Yellow 18
CAS No.	6407-80-3
Molecular Formula	C16H14N4O
Molecular Weight	278.31 g/mol
Synonyms	1-[(2-Methoxyphenyl)azo]-2-naphthalenol; C.I. Solvent Yellow 18; Oil Yellow 2G; Waxoline Yellow 2G; Ceres Yellow GG; Aizen SOT Yellow 2; Sudan Yellow 2G; 1-(2-Methoxyphenylazo)-2-naphthol
EINECS	229-066-8

Quality Control

Our Solvent Yellow 18 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise color strength, purity, and solubility specifications. A Certificate of Analysis (COA) detailing key parameters such as assay, hue, and solvent solubility is provided with each shipment to guarantee batch-to-batch consistency and performance reliability for your formulations.

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 sources and incompatible materials. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Yellow to orange powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Color Strength	100 ± 3% (vs. Standard)
Solubility (in Toluene)	Complete, clear solution
Moisture Content (KF)	≤ 0.5%
Ash Content	≤ 0.5%
Melting Point	120 - 125 °C

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