Description

Sulphur Black 2 is a high-performance sulfur dye renowned for its deep, intense black shade and excellent fastness properties. This product is essential for achieving cost-effective and durable coloration on cellulosic fibers like cotton and viscose. It is a critical raw material for textile manufacturers, leather tanneries, and paper mills seeking a robust and economical black dye. The compound is supplied under CAS No. 1326-85-8.

Application

• Textile Dyeing: Primary application for dyeing cotton, linen, viscose, and other cellulosic fibers to a deep, fast black.
• Leather Processing: Used for dyeing leather goods, providing a rich black color with good penetration.
• Paper Coloring: Employed in the production of specialty papers, such as wrapping paper or decorative paper, requiring a deep black hue.
• Wood Staining: Applied in wood treatment and staining processes for a dark, opaque finish.
• Ink Formulation: A component in the manufacture of certain types of industrial inks and pigments.
• Batch Dyeing of Yarn: Ideal for exhaust dyeing processes of yarns and fabrics in jiggers, winches, and becks.

Basic Information

Product Name	Sulphur Black 2
CAS No.	1326-85-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Sulfur Black 2; C.I. Sulphur Black 2; C.I. 53185; Sulphur Black B; Sulphur Black G; Immedial Black; Katigen Black; Solfo Black; Thional Black; Dye Sulphur Black 2
EINECS	215-483-4

Quality Control

Our Sulphur Black 2 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Quality is verified against key parameters including shade, strength, solubility, and fastness properties. A comprehensive Certificate of Analysis (COA) detailing purity, physical characteristics, and application test results 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 strong oxidizing agents and moisture to maintain product integrity and shelf life.

Specification

Item	Specification
Appearance	Black powder or granules
Shade	Standard Black
Strength	100% ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Partially soluble (as per dyeing process)
Particle Size	≥ 95% passes through specified mesh
Fastness Properties (Typical)	Wash: Good to Very Good; Light: Moderate

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