Description

C.I. Reactive Black 26 is a high-performance, bifunctional reactive dye belonging to the vinyl sulfone and chlorotriazine class, designed for covalent bonding with cellulosic fibers. Its primary value lies in delivering excellent wash and light fastness properties, ensuring deep, consistent black shades with high fixation rates and minimal effluent load. This dye is essential for textile manufacturers and dye houses specializing in the exhaust and continuous dyeing of cotton, viscose, and other cellulose-based fabrics, as well as for the printing industry.

Application

• Exhaust dyeing of cotton and regenerated cellulose fibers (e.g., viscose, lyocell) in jet, overflow, and beam dyeing machines.
• Continuous pad-dry-chemical pad-steam and pad-batch dyeing processes for woven and knitted fabrics.
• Textile printing applications, particularly for producing deep black outlines and solid areas.
• Dyeing of cellulose blends with polyester or other synthetic fibers using appropriate dyeing techniques.
• Used in the garment dyeing sector for achieving uniform and fast black colors.
• Applicable in the home textiles industry for dyeing towels, bed linens, and upholstery fabrics.

Basic Information

Product Name	C.I. Reactive Black 26
CAS No.	12731-61-2
Molecular Formula	C26H21N5O19S6.xNa
Molecular Weight	Contact for details
Synonyms	Reactive Black 26; Reactive Black K-BG; Reactive Black KN-BG; C.I. 20505; Reactive Black VS-BG; Vinylsulfone Black BG; Triazinyl Black BG; Remazol Black BG
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Black 26 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested for critical parameters including shade, strength, solubility, and fixation properties. A comprehensive Certificate of Analysis (COA) detailing purity, physical form, and application performance is provided with each shipment, ensuring compliance with global textile industry standards.

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
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 7.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Fixation Rate	≥ 70%
Dusting Grade	Low dusting

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