Description

C.I. Solvent Orange 25 is a high-performance, oil-soluble azo dye widely used for its excellent coloring properties and stability in non-aqueous systems. This product matters for industrial users who require consistent, vibrant orange coloration in a variety of polymers, fuels, and solvent-based applications. It is primarily needed by manufacturers in the plastics, printing inks, coatings, and specialty chemical industries seeking reliable and cost-effective pigmentation solutions.

Application

• Coloration of hydrocarbon-based fuels and lubricants.
• Mass coloration of polystyrene (PS), polycarbonate (PC), and other engineering plastics.
• Pigment for solvent-based printing inks and flexographic inks.
• Staining agent for wood stains and decorative coatings.
• Colorant for waxes, greases, and polishes.
• Tinting of synthetic fibers during melt spinning processes.
• Marker dye for industrial solvents and chemical tracking.
• Color additive for specialty adhesives and sealants.

Basic Information

Product Name	C.I. Solvent Orange 25
CAS No.	61813-62-5
Molecular Formula	C18H14N4O2
Molecular Weight	318.33 g/mol
Synonyms	Solvent Orange 25; Oil Orange 25; C.I. 12305; 1-[(2-Methoxyphenyl)azo]-2-naphthol; 1-(2-Methoxy-1-naphthylazo)-2-naphthol; Ceres Orange R; Aizen SOT Orange 1; Sudan Orange R; Organol Orange 2G
EINECS	Contact for details

Quality Control

Our C.I. Solvent Orange 25 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification, strength, and shade value assessment. Certificates of Analysis (COA) documenting key parameters are available upon request 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. This product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to reddish-brown powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Color Strength	100 ± 3% (vs. Standard)
Shade	Within agreed limits
Solubility (Toluene)	Complete, clear solution
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.