Description

Vat Blue 64 is a high-performance vat dye belonging to the anthraquinone chemical class, known for its excellent color fastness and stability. This compound is essential for achieving deep, durable blue shades on cellulosic fibers like cotton, linen, and viscose. It is a critical raw material for textile manufacturers, leather dyers, and specialty ink producers who require superior light and wash fastness in their finished products. The chemical is supplied under the identifier CAS No. 15935-52-1.

Application

• Textile Dyeing: Primary application for dyeing cotton, linen, rayon, and other cellulosic fabrics to achieve brilliant and fast blue colors.
• Leather Coloring: Used in the dyeing of leather goods, providing rich color with excellent rub fastness.
• Industrial Pigmentation: Employed in the manufacture of specialty inks, paints, and coatings where color stability is paramount.
• Paper Staining: Suitable for coloring high-grade papers and decorative paper products.
• Yarn Dyeing: Ideal for batch dyeing of yarns and threads intended for high-end apparel and home textiles.
• Denim Production: Used in specific processes to achieve classic and fashion indigo-blue shades on denim.

Basic Information

Product Name	Vat Blue 64
CAS No.	15935-52-1
Molecular Formula	C28H14N2O4
Molecular Weight	442.42 g/mol
Synonyms	C.I. Vat Blue 64; Vat Blue GCD; C.I. 66730; 8,16-Pyranthrenedione, 5,13-dihydro-; Indanthren Blue GCD; Caledon Blue GCD; Amanthrene Blue GCD; Cibanone Blue 2R
EINECS	240-066-1

Quality Control

Our Vat Blue 64 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive testing including color strength, shade, particle size distribution, and solubility. We provide full traceability and Certificates of Analysis (COA) are available for every shipment, confirming compliance with agreed 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 strong oxidizing agents and incompatible materials. The container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Dark Blue Powder
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Purity (HPLC)	≥ 96.0%
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Particle Size	≥ 95% passes 80 mesh
Solubility in DMSO	Clear Solution
Identification (IR)	Conforms

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