Description

Vat Green 13 CAS NO 57456-28-7 is a high-performance vat dye belonging to the anthraquinone class, renowned for its exceptional color fastness and chemical stability. This product is engineered to deliver brilliant, durable green shades that are resistant to light, washing, and chlorine, making it a critical component for demanding textile applications. It is primarily sought after by manufacturers in the textile dyeing and printing industries for coloring natural fibers like cotton, wool, and silk, as well as for technical applications requiring long-lasting color integrity.

Application

• Primary application in the exhaust dyeing and continuous pad-steam dyeing of cellulosic fibers such as cotton, linen, and viscose.
• Used for the printing of textiles, including fabrics for home furnishings (curtains, upholstery) and high-end apparel.
• Employed in the coloration of wool and silk where high wash and light fastness are required.
• Suitable for dyeing industrial fabrics like canvas, tarpaulins, and awning materials that are exposed to weather.
• Potential use as a colorant for specialty papers and security printing inks.
• Applied in the laboratory and R&D sectors as a reference standard or intermediate for synthesizing other complex dyes and pigments.

Basic Information

Product Name	Vat Green 13
CAS No.	57456-28-7
Molecular Formula	C₃₄H₁₈N₂O₆
Molecular Weight	550.52 g/mol
Synonyms	C.I. Vat Green 13; C.I. 69825; Vat Green GG; 16,17-Dimethoxydinaphtho[2,3-a:2',3'-h]phenazine-5,9,14,18-tetrone; 8,17-Dimethoxydinaphtho[2,3-a:2',3'-i]phenazine-5,10,15,20-tetrone; Dinaphtho[2,3-a:2',3'-h]phenazine-5,9,14,18-tetrone, 16,17-dimethoxy-; Vat Green 13 (C.I. 69825); Vat Dye Green 13
EINECS	Contact for details

Quality Control

Our Vat Green 13 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 color strength, shade, solubility, and particle size distribution. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and application performance is provided with each shipment to guarantee it meets the specifications required for industrial dyeing processes.

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 sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Dark Green Powder
Identification (IR)	Conforms to Standard
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 Pyridine	Complete
Fastness Properties (on Cotton)	Light: 6-7; Wash: 4-5; Chlorine: 4

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