Description

C.I. Solvent Violet 21 is a high-purity, anthraquinone-based solvent dye renowned for its intense violet color and excellent solubility in non-polar organic media. This product is essential for providing durable, non-migratory coloration in a wide range of industrial applications where water-based systems are unsuitable. It is a critical component for manufacturers in the plastics, ink, and specialty coatings sectors seeking consistent, high-performance pigmentation.

Application

• Plastics Coloring: Primary application for coloring a variety of polymers, including polystyrene (PS), polycarbonate (PC), and polymethyl methacrylate (PMMA), offering excellent heat stability and lightfastness.
• Ink Formulation: Used in solvent-based printing inks for flexographic, gravure, and specialty packaging applications, providing vibrant shades and good printability.
• Industrial Coatings: Imparts color to solvent-borne lacquers, wood stains, and automotive refinish coatings, ensuring color consistency and durability.
• Wax & Grease Marking: Employed as a colorant in marking crayons, lubricating greases, and modeling waxes.
• Fuel & Solvent Marking: Used for dyeing hydrocarbon-based fuels, solvents, and oils for identification and tax demarcation purposes.
• Cosmetic & Personal Care: Suitable for coloring certain cosmetic formulations and personal care products where oil solubility is required.

Basic Information

Product Name	C.I. Solvent Violet 21
CAS No.	39290-77-2
Molecular Formula	C₂₄H₂₇N₃O₂
Molecular Weight	389.49 g/mol
Synonyms	Solvent Violet 21; 1,4-Bis[(2,6-diethyl-4-methylphenyl)amino]anthraquinone; 1,4-Bis(mesitylamino)anthraquinone; C.I. 61545; Waxoline Violet AP-FW; Macrolex Violet B; Ceres Violet BN; Neozapon Violet 401; Oil Violet; Anthraquinone Violet
EINECS	254-417-6

Quality Control

Our production of C.I. Solvent Violet 21 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against comprehensive specifications for color strength, hue, solubility, and purity. Certificates of Analysis (COA) documenting these results are provided and can be tailored to meet specific customer requirements.

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	Dark violet powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Hue	Within agreed tolerance
Purity (HPLC)	≥ 98.0%
Solubility (in Toluene)	Clear, complete solution
Moisture Content (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.