Description

Solvent Brown 44 is a synthetic organic dye belonging to the solvent dye class, characterized by its excellent solubility in non-polar to moderately polar organic media. This product is valued for its strong tinctorial strength and good lightfastness, providing consistent and durable coloration. It is primarily utilized in industrial applications where a stable brown hue is required for non-aqueous systems. The CAS number for this compound is 61969-45-7.

Application

• Primary coloring agent for plastics, including polystyrene, ABS, and polycarbonate.
• Imparting color to hydrocarbon-based fuels, lubricants, and waxes.
• Staining and marking of wood finishes, varnishes, and lacquers.
• Coloration of printing inks, especially for specialty and security printing applications.
• Used in the manufacture of colored synthetic fibers and films.
• As a colorant for specialty coatings and automotive refinish products.

Basic Information

Product Name	Solvent Brown 44
CAS No.	61969-45-7
Molecular Formula	C22H16N4O4
Molecular Weight	392.39 g/mol
Synonyms	Solvent Brown 44; C.I. Solvent Brown 44; 1-[(2,4-Dinitrophenyl)azo]-2-naphthol; 1-[(2,4-Dinitrophenyl)hydrazono]naphthalen-2-one; Ceres Brown R; Oil Brown 402; Aizen SOT Brown-1; Sudan Brown 2G
EINECS	263-358-6

Quality Control

Our Solvent Brown 44 is manufactured under a strict quality management system. Each batch is tested to ensure it meets precise color strength, purity, and solubility specifications. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to guarantee batch-to-batch consistency and performance reliability.

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 and should be stored away from direct light exposure to maintain color stability.

Specification

Item	Specification
Appearance	Brown powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Assay (HPLC)	≥ 98.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Solubility (in Toluene)	Complete, clear solution
Light Fastness	≥ 5 (Blue Scale)

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