Description

Solvent Yellow 19 is a high-purity, oil-soluble azo dye widely recognized for its strong and stable yellow coloration. This compound is valued for its excellent solubility in non-polar organic solvents and its compatibility with a range of polymers and hydrocarbon-based systems. It serves as a critical colorant for industrial applications, particularly in the plastics, printing ink, and fuel marker sectors, where consistent hue and performance are essential.

Application

• Primary colorant for plastics and synthetic fibers, including polyolefins (PP, PE) and polystyrene.
• Manufacturing of printing inks, especially for packaging and specialty publications.
• Coloring agent for waxes, lubricating greases, and petroleum products.
• Used in the formulation of fuel markers and solvent-based wood stains.
• Pigment for coatings and lacquers where oil solubility is required.
• Color coding for industrial and automotive chemicals.

Basic Information

Product Name	Solvent Yellow 19
CAS No.	10343-55-2
Molecular Formula	C₁₈H₁₆N₄O
Molecular Weight	304.35 g/mol
Synonyms	1-[[4-(Phenylazo)phenyl]azo]-2-naphthol; C.I. Solvent Yellow 19; Oil Yellow 2G; Aizen SOT Yellow-1; Ceres Yellow GN; Fat Yellow B; Sudan Yellow G; Plast Yellow 101; Waxoline Yellow GP
EINECS	233-758-5

Quality Control

Our Solvent Yellow 19 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high performance. Each lot is tested against rigorous in-house specifications for color strength, solubility, and purity. A comprehensive Certificate of Analysis (COA) detailing assay, identification, and impurity profiles is provided with every shipment to support your quality assurance protocols.

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.

Specification

Item	Specification
Appearance	Yellow to orange powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Solubility (in Toluene)	Complete, clear solution
Color Strength	95 - 105% of standard
Moisture (KF)	≤ 0.5%
Ash Content	≤ 0.5%

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