Description

C.I. Reactive Yellow 58 is a high-performance, water-soluble reactive dye belonging to the azo chemical class. This product is engineered for exceptional color yield and wash-fastness, making it a critical component for achieving vibrant and durable yellow shades on cellulosic fibers. It is primarily utilized by textile manufacturers and dye producers seeking reliable and consistent coloration for cotton, viscose, and other natural fabrics. The compound is supplied as a high-purity powder, identified with CAS No. 61969-36-6, ensuring batch-to-batch consistency for industrial applications.

Application

The primary use of C.I. Reactive Yellow 58 is in the textile dyeing and printing industry. Its specific applications include:

• Exhaust Dyeing of Cotton: For batch dyeing processes in jet, overflow, and winch machines.
• Continuous Dyeing: Applied in pad-batch and pad-steam processes for high-volume fabric production.
• Textile Printing: Used in pigment printing pastes for sharp and bright yellow designs on fabrics.
• Viscose and Linen Dyeing: Suitable for dyeing other cellulosic fibers beyond cotton.
• Preparation of Dye Blends: A key component in creating specific green and orange shades when mixed with other reactive blues and reds.
• Industrial Yarn Dyeing: For coloring sewing threads and other industrial yarns requiring high fastness properties.

Basic Information

Product Name	C.I. Reactive Yellow 58
CAS No.	61969-36-6
Molecular Formula	C23H15ClN7Na3O11S3
Molecular Weight	872.08 g/mol
Synonyms	Reactive Yellow 58; Reactive Brilliant Yellow SP-8G; C.I. 17796; Reactive Yellow SP-8G; Reactive Light Yellow SP-8G; Vinylsulfone Azo Dye; Remazol Brilliant Yellow SP-8G; Levafix Brilliant Yellow E-8G
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Yellow 58 adheres to stringent quality management protocols. Every batch is tested against rigorous in-house specifications to ensure purity, color strength, solubility, and fastness properties meet industry expectations. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, shade, and impurity profile. Our quality system is designed to support the demanding requirements of global textile supply chains.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent moisture absorption, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0
Fastness Properties	To be specified per grade

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