Description

Vat Yellow 28 is a high-performance vat dye belonging to the anthraquinone chemical class, known for its excellent color fastness properties. This dye is crucial for achieving durable and vibrant yellow shades on cellulosic fibers like cotton, linen, and viscose. It is primarily needed by textile manufacturers and dye houses seeking superior light and wash fastness for high-quality apparel, home textiles, and industrial fabrics.

Application

• Textile Dyeing: Primary application for dyeing and printing cotton, linen, rayon, and other cellulosic fibers to produce fast yellow colors.
• Yarn Dyeing: Used in the batch dyeing of yarns intended for denim, upholstery, and other durable textiles.
• Pigment Manufacturing: Can serve as a colorant intermediate for producing high-stability organic pigments.
• Industrial Fabric Coloring: Suitable for coloring canvas, tarpaulins, and other fabrics requiring resistance to weathering.
• Leather Dyeing: Applied in the dyeing of leather goods where color durability is essential.
• Paper Staining: Used for specialty paper coloring where lightfastness is a key requirement.

Basic Information

Product Name	Vat Yellow 28
CAS No.	4229-15-6
Molecular Formula	C28H12N2O4
Molecular Weight	440.41 g/mol
Synonyms	Vat Yellow 4GF; C.I. Vat Yellow 28; C.I. 69000; 8,16-Pyranthrenedione, 5,10-dihydro-5,10-dioxo-; Dibenzanthrone; Flavanthrone Yellow; Pyranthrone; Pyranthrone Yellow; Vat Yellow G
EINECS	224-191-7

Quality Control

Our Vat Yellow 28 is manufactured under a stringent quality management system. Each batch is tested to ensure consistent shade, strength, and application performance. Key parameters such as color value, particle size distribution, and reduction properties are verified. A Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with every shipment to guarantee it meets your specific 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 heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Shade	Within agreed tolerance
Moisture Content	≤ 5.0%
Particle Size	≥ 95% passes through 80 mesh
Dusting Quality	Low dusting grade available
Reduction Properties	Standard vatting time and leuco solubility

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