Description

Vat Blue 42 is a high-performance, synthetic organic pigment belonging to the vat dye class, known for its excellent color fastness and chemical stability. This compound is valued for its ability to deliver deep, durable blue shades that resist fading from light, washing, and industrial processes. It is an essential raw material for manufacturers in the textile, plastics, and specialty coatings industries seeking reliable and consistent coloration.

Application

• Textile Dyeing and Printing: Primary application for dyeing cotton, wool, and other natural fibers, prized for its superior wash and light fastness.
• Plastics and Masterbatch Coloring: Used to impart stable blue coloration to polymers like PVC, polyolefins, and engineering plastics.
• Industrial Coatings and Paints: Employed in the formulation of high-performance paints, automotive finishes, and industrial coatings requiring durability.
• Ink Manufacturing: A key pigment for producing high-quality printing inks, including packaging and security inks.
• Paper Coloration: Used in specialty paper production where color retention is critical.
• Leather Finishing: Applied in the dyeing of leather goods to achieve rich, long-lasting blue tones.

Basic Information

Product Name	Vat Blue 42
CAS No.	1327-81-7
Molecular Formula	C₂₈H₁₂N₂O₄
Molecular Weight	440.41 g/mol
Synonyms	Vat Blue 42; C.I. 69825; C.I. Vat Blue 42; Indanthren Blue CLB; Caledon Blue XRC; Cibanone Blue 2R; Nihonthrene Blue CLB; 16,17-Dimethoxydinaphtho[2,3-a:2',3'-h]phenazine-5,9,14,18-tetrone
EINECS	215-524-7

Quality Control

Our Vat Blue 42 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive testing including purity assay, shade strength, particle size distribution, and fastness property evaluation. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to guarantee compliance with your technical requirements.

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 strong oxidizing agents. The container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 96.0%
Shade Strength	100 ± 3%
Moisture Content	≤ 2.0%
Ash Content	≤ 1.0%
Particle Size (≤2μm)	≥ 80%
Light Fastness	7-8 (ISO 105-B02)
Washing Fastness	4-5 (ISO 105-C06)

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