Description

Vat Black 25 is a high-performance vat dye belonging to the anthraquinone class, known for its excellent fastness properties. This pigment is crucial for achieving deep, durable black shades that are resistant to light, washing, and chlorine. It is primarily needed by manufacturers in the textile industry for dyeing and printing cellulosic fibers like cotton, as well as for specialized applications requiring high color stability.

Application

• Dyeing of cellulosic fibers, including cotton, viscose, and linen, for apparel and home textiles.
• Printing inks for textiles to create patterns with superior wash and light fastness.
• Production of high-quality denim and other workwear fabrics requiring durable coloration.
• Coloration of paper and specialty papers where color permanence is critical.
• As a colorant in the manufacture of leather goods.
• Potential use as a pigment in plastics and coatings for niche applications requiring specific black tones.

Basic Information

Product Name	Vat Black 25
CAS No.	4395-53-3
Molecular Formula	C34H14N2O6
Molecular Weight	546.49 g/mol
Synonyms	C.I. Vat Black 25; C.I. 69525; Indanthren Black BBF; Caledon Black X; Mikethrene Black BBF; 8,16-Pyranthrenedione, 5,6,12,13-tetrachloro-3,10-dihydro-; Vat Dye Black 25
EINECS	224-522-9

Quality Control

Our Vat Black 25 is produced under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested for key parameters including shade, strength, and particle size distribution. A Certificate of Analysis (COA) documenting purity, physical properties, and performance characteristics is available upon request to support your quality assurance protocols.

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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Black Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Particle Size	Contact for details
Dusting Property	Low
Fastness Properties (Typical)	Light: 7-8; Wash: 4-5; Chlorine: 4-5

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