Description

Sulphon Black S is a high-performance, water-soluble synthetic dye belonging to the class of acid dyes. It is valued for its excellent affinity for protein fibers like wool and silk, providing deep, level shades with good fastness properties. This product is essential for manufacturers in the textile, leather, and paper industries seeking reliable and consistent coloring agents. Its versatility also makes it suitable for specialized applications in biological staining and ink formulations.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers to achieve deep black shades.
• Leather Finishing: Used in the coloring of leather goods, providing uniform and durable color.
• Paper Coloring: Employed in the production of colored papers and paper products.
• Biological Staining: Serves as a histological stain in laboratory settings for microscopic analysis.
• Ink Manufacturing: A colorant component in the formulation of specialty inks.
• Wood Staining: Applied for tinting and coloring wood surfaces.

Basic Information

Product Name	Sulphon Black S
CAS No.	6492-58-6
Molecular Formula	C22H14N6Na2O9S2
Molecular Weight	616.49 g/mol
Synonyms	Acid Black 1; Naphthalene Black 12B; Lissamine Black 12B; Amido Black 10B; Wool Black S; C.I. 20470; Erie Black S; Kiton Black S
EINECS	229-353-0

Quality Control

Our Sulphon Black S is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous in-house specifications, which typically include parameters for identification, assay, solubility, and shade value. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee product integrity and 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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Assay (Dye Content)	Min. 95%
Solubility in Water	Completely soluble
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
pH (1% Solution)	6.0 - 8.0
Shade & Strength	Matches reference standard

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