Description

Solvent Blue 43 is a high-performance, oil-soluble anthraquinone dye known for its excellent solubility in non-polar organic media and strong, vibrant blue coloration. This product is engineered to deliver consistent color strength and superior lightfastness, making it a critical component for demanding industrial applications where color integrity is paramount. It is primarily utilized by manufacturers in the plastics, printing inks, and specialty coatings sectors who require reliable and stable blue pigments for their formulations.

Application

• Coloration of engineering plastics and thermoplastic resins (e.g., polystyrene, ABS, polycarbonate).
• Manufacturing of high-quality printing inks, including specialty inks for packaging and security printing.
• Pigmentation for industrial coatings, lacquers, and wood stains.
• Coloring agent for waxes, greases, and lubricants for identification purposes.
• Dye for synthetic fibers and specialty textiles during the melt-spinning process.
• Colorant for ballpoint pen inks and other specialty writing instruments.
• Marker dyes for fuels and hydrocarbon-based fluids.
• Research and development applications in organic synthesis and material science.

Basic Information

Product Name	Solvent Blue 43
CAS No.	61813-75-0
Molecular Formula	C20H18N2O2
Molecular Weight	318.37 g/mol
Synonyms	1,4-Bis(butylamino)anthraquinone; C.I. Solvent Blue 43; Oil Blue B; 1,4-Bis(n-butylamino)-9,10-anthracenedione; Ceres Blue B; Anthraquinone Blue B; Butyl Blue; 1,4-Di(butylamino)anthraquinone
EINECS	263-268-6

Quality Control

Our Solvent Blue 43 is produced under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identity confirmation, purity assay, and shade value determination. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical specifications.

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	Dark blue powder or crystalline solid
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	≤ 0.2%
Lightfastness	≥ 7 (Blue Wool Scale)

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