Description

C.I. Sulfur Black 6 is a high-performance sulfur dye renowned for its deep, intense black shade and excellent color fastness properties. This compound is a cornerstone in the textile dyeing industry, offering a cost-effective and durable solution for achieving deep black hues on cellulosic fibers. It is primarily utilized by manufacturers in the textile, leather, and paper industries seeking robust, economical, and wash-fast black coloration. Our supply of C.I. Sulfur Black 6 CAS NO 68909-90-0 ensures consistent quality and reliable performance for industrial-scale applications.

Application

• Textile Dyeing: Primary application for dyeing cotton, rayon, and other cellulosic fabrics to achieve a deep, economical black.
• Leather Finishing: Used in the dyeing of leather goods, providing a rich black color with good penetration.
• Paper Coloration: Employed in the production of specialty papers requiring a deep black shade.
• Yarn Dyeing: Suitable for batch and continuous dyeing processes for sewing threads and other yarns.
• Denim Overdyeing: Applied to achieve darker, vintage, or overdyed effects on denim garments.
• Industrial Fabric Production: Used for coloring canvas, tarpaulins, and other heavy-duty fabrics where color fastness is critical.

Basic Information

Product Name	C.I. Sulfur Black 6
CAS No.	68909-90-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Sulfur Black 6; C.I. 53295; Sulfur Black B; Sulfur Black G; Immedial Black V; Kayaku Sulphur Black B; Sulphur Black 6; D&C Black No. 1; Leather Black SB
EINECS	Contact for details

Quality Control

Our production of C.I. Sulfur Black 6 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including shade strength, solubility, and fastness properties to meet industrial specifications. Certificates of Analysis (COA) documenting these quality checks are available upon request to support your quality assurance and regulatory compliance needs.

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 moisture to maintain product integrity.

Specification

Item	Specification
Appearance	Black powder or granules
Shade	Conforms to standard
Strength	100% ± 3%
Moisture Content	≤ 5.0%
Water Solubility	Conforms to standard
Fastness to Washing	≥ 4 (Grey Scale)
Fastness to Rubbing	≥ 3-4 (Grey Scale)
Particle Size	95% min. through specified mesh

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