Description

C.I. Reactive Black 12 is a high-performance, bifunctional reactive dye belonging to the vinyl sulfone and chlorotriazine class. This product is engineered to deliver exceptional color yield and wash-fastness on cellulosic fibers, making it a critical component for achieving deep, durable black shades. It is primarily used by textile manufacturers and dye houses specializing in cotton, viscose, and other cellulose-based fabrics. The compound, identified as CAS NO 12225-30-8, is valued for its reliable fixation and consistent batch-to-batch quality in industrial dyeing processes.

Application

• Exhaust Dyeing of Cotton: For batch-wise dyeing processes to achieve deep black shades with excellent levelness.
• Continuous Pad-Dyeing: Used in pad-steam and pad-batch processes for high-volume, uniform coloration of woven and knitted fabrics.
• Viscose and Rayon Dyeing: Provides vibrant and fast colors on regenerated cellulose fibers.
• Yarn Dyeing: Suitable for dyeing cotton and blended yarns intended for weaving or knitting.
• Garment Dyeing: Applied for dyeing finished apparel items, offering good penetration and color consistency.
• Home Textiles: Used for dyeing towels, bed linens, and other home furnishing fabrics requiring high wash-fastness.

Basic Information

Product Name	C.I. Reactive Black 12
CAS No.	12225-30-8
Molecular Formula	C26H21N5O19S6·xNa
Molecular Weight	Contact for details
Synonyms	Reactive Black 12; Reactive Black K-BR; Reactive Black KN-B; C.I. 12225-30-8; Reactive Black VS-B; Vinylsulfone Black B; Remazol Black B; Levafix Black E-B; Procion Black H-EX; Dianix Black VS-B
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Black 12 adheres to stringent quality management protocols to ensure product consistency and performance. Every batch is tested against key parameters including strength, shade, solubility, and fixation properties. Certificates of Analysis (COA) documenting purity, physical properties, and application performance are available upon request, providing full traceability and compliance with 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. The product is hygroscopic (moisture-sensitive); ensure the original packaging is resealed tightly after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Solubility in Water	≥ 100 g/L (at 50°C)
Moisture Content	≤ 5.0%
pH (1% Solution)	5.5 - 7.5
Fixation Rate	≥ 70% (Standard conditions)
Dusting Property	Low dusting

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