Description

Sumilight Supra Grey F-3Rl is a high-performance synthetic dye belonging to the azo dye class, identified by CAS No. 12221-90-8. It is engineered to deliver exceptional color fastness, brightness, and stability under demanding industrial processing conditions. This product is essential for manufacturers in the textile, leather, and specialty coatings industries seeking reliable and consistent coloration for high-quality finished goods.

Application

• Textile Dyeing: Primary application for dyeing polyester (PES) and polyester-blend fibers, offering excellent wash and light fastness.
• Leather Finishing: Used for coloring finished leather goods, providing rich, uniform shades with good rub fastness.
• Plastic and Masterbatch Coloring: Imparts stable grey hues to polymers and plastic compounds during manufacturing.
• Ink Formulation: A key component in the production of industrial inks for specialized printing applications.
• Paper Coloration: Employed in the tinting of specialty papers and boards where color consistency is critical.
• Non-Woven Fabrics: Suitable for dyeing synthetic non-woven materials used in technical textiles.

Basic Information

Product Name	Sumilight Supra Grey F-3Rl
CAS No.	12221-90-8
Molecular Formula	C32H27N5O8S2.2Na
Molecular Weight	775.75 g/mol
Synonyms	Disperse Grey S-3R; C.I. Disperse Grey 61; Disperse Grey F3RL; Grey F-3RL; Sumilight Supra Grey F3RL; 1,5-Bis[(2-cyano-4-nitrophenyl)azo]-2-naphthol, disodium salt; 2-Naphthalenol, 1,5-bis[(2-cyano-4-nitrophenyl)azo]-, disodium salt
EINECS	Contact for details

Quality Control

Every batch of Sumilight Supra Grey F-3Rl is manufactured under a strict quality management system. Our products undergo rigorous quality testing to ensure compliance with industry standards for purity, strength, and application performance. Certificates of Analysis (COA) detailing key parameters such as shade, strength, and impurity profile are available upon request.

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.

Specification

Item	Specification
Appearance	Grey to dark grey powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Shade	Matches reference standard
Strength	100 ± 3%
Moisture Content	≤ 5.0%
Ash Content	≤ 1.0%
Particle Size	≥ 95% passes 80 mesh

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