Description

C.I.Leuco Sulphur Yellow 4 is a key leuco form intermediate used in the production of sulfur dyes. This compound is essential for generating the final, water-insoluble sulfur dye pigment upon oxidation, providing excellent wash and light fastness properties. It is primarily required by manufacturers in the textile industry for dyeing cellulosic fibers like cotton and viscose, offering a cost-effective and durable coloring solution.

Application

• Primary Textile Dyeing: As a leuco precursor for sulfur dyes used on cotton, linen, jute, and other cellulosic fabrics.
• Industrial Fabric Coloring: For workwear, denim, and other heavy-duty textiles requiring high color fastness.
• Yarn and Fiber Dyeing: Application in batch and continuous dyeing processes for yarns and loose fibers.
• Leather Dyeing: Used in the coloration of leather goods where deep, penetrating shades are desired.
• Paper Staining: For specialty paper products requiring specific, stable colorants.

Basic Information

Product Name	C.I. Leuco Sulphur Yellow 4
CAS No.	12262-39-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Leuco Sulphur Yellow 4; Leuco Sulphur Yellow 4; C.I. 53160; Sulphur Yellow 4 Leuco Base; Leuco Sulfur Yellow 4; [4-[[4-(Dimethylamino)phenyl]azo]phenyl]acetonitrile; 2-[4-[[4-(Dimethylamino)phenyl]azo]phenyl]acetonitrile
EINECS	Contact for details

Quality Control

Our C.I.Leuco Sulphur Yellow 4 is manufactured under strict quality control protocols to ensure batch-to-batch consistency and performance in dye applications. Quality is verified through analytical testing including assay, identification, and impurity profiling. A Certificate of Analysis (COA) documenting key specifications is provided with each shipment to guarantee compliance with agreed parameters.

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	Yellow to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 2.0%
Ash Content	Max. 1.0%

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