Description

C.I. Reactive Yellow 87 is a high-performance, reactive dye belonging to the vinyl sulfone class, known for its bright and vivid yellow hue. It is engineered to deliver excellent color yield, wash-fastness, and reproducibility in demanding industrial dyeing processes. This product is essential for manufacturers in the textile industry seeking reliable and consistent coloration for cellulosic fibers like cotton, viscose, and linen.

Application

• Exhaust Dyeing of Cotton: Primary application for dyeing yarns, knits, and woven fabrics in jet, overflow, and beam dyeing machines.
• Continuous Dyeing Processes: Used in pad-batch and pad-steam ranges for efficient, high-volume production of colored fabrics.
• Cellulosic Fiber Blends: Effective for dyeing blends of cotton with polyester or other synthetic fibers.
• Home Textiles: Coloration of towels, bed linens, and upholstery fabrics requiring high light and wash fastness.
• Apparel Fabric Production: Used for dyeing fabrics destined for casual wear, sportswear, and fashion garments.
• Technical Textiles: Suitable for applications where consistent color and durability are critical.

Basic Information

Product Name	C.I. Reactive Yellow 87
CAS No.	61969-40-2
Molecular Formula	C29H19ClN7Na3O15S4
Molecular Weight	990.23 g/mol
Synonyms	Reactive Yellow 87; Reactive Brilliant Yellow 4GL; C.I. 18222; Reactive Yellow 4GL; Vinylsulfone Reactive Yellow 87; Remazol Brilliant Yellow 4GL; Levafix Brilliant Yellow E-4GL; Drimarene Brilliant Yellow K-4GL
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Yellow 87 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including shade, strength, solubility, and fixation properties. Certificates of Analysis (COA) documenting purity, physical properties, and application performance are available upon request to support your quality assurance and production planning.

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	Yellow Powder
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 7.0%
Water Insoluble Matter	≤ 0.2%
Dye Content	≥ 70.0%
pH (1% Solution)	5.0 - 7.0
Solubility in Water (50°C)	≥ 100 g/L
Fixation Rate	≥ 70%

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