Description

Vat Black 20 is a high-performance vat dye belonging to the anthraquinone chemical class, known for its exceptional color fastness and deep, rich black shade. Its primary value lies in providing superior light, wash, and chlorine fastness, making it a critical component for demanding textile applications. This product is essential for industrial manufacturers in the textile dyeing and printing sectors, particularly for coloring cotton, viscose, and other cellulosic fibers where long-lasting color integrity is paramount.

Application

• Dyeing of cotton, viscose, and other cellulosic fibers for apparel and home textiles.
• Production of high-fastness denim and workwear fabrics.
• Printing inks for textiles requiring excellent durability.
• Coloration of flax and linen fabrics.
• Industrial fabrics where resistance to light, washing, and perspiration is critical.
• Dyeing of yarns and threads intended for outdoor or automotive textiles.

Basic Information

Product Name	Vat Black 20
CAS No.	57456-27-6
Molecular Formula	C34H14N2O6
Molecular Weight	546.49 g/mol
Synonyms	C.I. Vat Black 20; Vat Black NBk; C.I. 59825; Cibanone Black NB; Caledon Black NB; Indanthren Black NB; Mikethrene Black NB; Youhaothrene Black NB
EINECS	Contact for details

Quality Control

Our Vat Black 20 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including shade, strength, particle size, and fastness properties. A comprehensive Certificate of Analysis (COA) documenting purity, physical properties, and application performance is available for each shipment to support your quality assurance protocols.

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. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque containers until use.

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	≥ 95% passes 80 mesh
Dusting Quality	Low Dusting
Fastness to Light	≥ 6-7 (ISO 105-B02)
Fastness to Washing	≥ 4-5 (ISO 105-C06)

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