Description

Levafix Brilliant Blue E-B is a high-performance, reactive dye belonging to the vinyl sulfone class, known for its brilliant blue color and excellent fastness properties. It is engineered to deliver superior color yield and reproducibility, which is critical for maintaining consistent quality in demanding industrial dyeing processes. This product is essential for manufacturers in the textile industry seeking vibrant, wash-fast, and light-fast blue shades on cellulosic fibers like cotton and viscose.

Application

Levafix Brilliant Blue E-B is primarily used in the coloration of natural and regenerated cellulose materials. Its key applications include:

• Exhaust Dyeing of Cotton: For producing deep and brilliant blue shades with excellent wash and light fastness.
• Continuous Dyeing Processes: Suitable for pad-batch and pad-steam applications on woven and knitted fabrics.
• Viscose and Rayon Dyeing: Provides uniform and level dyeing on regenerated cellulose fibers.
• Yarn Dyeing: Used for dyeing cotton and viscose yarns in hank or package form.
• Shade Formulation: A key component for creating a wide range of green, violet, and black shades in combination with other reactive dyes.
• Home Textiles and Apparel: Ideal for products requiring high colorfastness to washing, such as towels, bed linens, and denim.

Basic Information

Product Name	Levafix Brilliant Blue E-B
CAS No.	12225-46-6
Molecular Formula	C29H19ClN7O11S3·Na2
Molecular Weight	840.15 g/mol
Synonyms	Reactive Blue 198; C.I. Reactive Blue 198; Levafix Brilliant Blue EB; Remazol Brilliant Blue BB; Vinylsulfone Blue Dye; Sodium 2-[(E)-[4-[[4-chloro-6-[3-(2-sulfonatooxyethylsulfonyl)anilino]-1,3,5-triazin-2-yl]amino]-2-sulfonatophenyl]diazenyl]-5-methylbenzenesulfonate
EINECS	Contact for details

Quality Control

Our Levafix Brilliant Blue E-B is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, shade, solubility, and fixation properties. A Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment to guarantee it meets the specifications required for industrial textile applications.

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 excessive heat. The product is hygroscopic; ensure the original packaging is resealed tightly after use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Blue Powder
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 7.0%
Water Insoluble Matter	≤ 0.2%
Identification (IR)	Conforms to Standard
pH (1% Solution)	5.5 - 7.5
Fixation Rate	≥ 70%
Fastness to Washing	4-5 (ISO 105-C03)
Fastness to Light	5-6 (ISO 105-B02)

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