Description

Reactive Red 198 CAS NO 145017-98-7 is a high-performance, vinyl sulfone-based reactive dye belonging to the azo chemical class. This product is engineered to deliver exceptional color fastness and brilliant red shades on cellulosic fibers like cotton and viscose. It is a critical component for textile manufacturers and dye houses seeking reliable, vibrant, and wash-fast coloration. Its primary applications are in the exhaust and continuous dyeing of textiles, where consistent batch-to-batch quality is paramount.

Application

• Exhaust Dyeing of Cotton: For dyeing yarn, knits, and woven fabrics in jet, overflow, and beam dyeing machines.
• Continuous Dyeing of Cellulosics: Used in pad-steam and pad-batch processes for efficient, large-scale fabric production.
• Viscose and Rayon Dyeing: Provides excellent build-up and levelness on regenerated cellulose fibers.
• Textile Printing: Suitable for printing applications where high fixation and sharp outlines are required.
• Blend Fabric Dyeing: Can be used in combination with other dye classes for cotton-polyester or cotton-nylon blends.
• Industrial Fabric Coloration: For applications requiring durable color, such as in home textiles (towels, bed linens) and workwear.

Basic Information

Product Name	Reactive Red 198
CAS No.	145017-98-7
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	1136.06 g/mol (Disodium Salt)
Synonyms	Reactive Red 198; C.I. Reactive Red 198; Remazol Red 3BS; Levafix Red CA; Procion Red H-EXL; Sumifix Red 3BS; Drimarene Red K-4BL; Reactive Brilliant Red M-3BE; Vinylsulfone Reactive Dye Red 198; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[3-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, tetrasodium salt
EINECS	Contact for details

Quality Control

Our Reactive Red 198 is manufactured under a stringent quality management system. Every batch is tested against rigorous internal specifications to ensure consistent shade, strength, solubility, and fixation properties. Key parameters such as color strength, hue, and impurity profile are monitored via advanced analytical techniques. A Certificate of Analysis (COA) detailing purity, physical properties, and performance metrics is provided with each shipment to guarantee it meets the demands of industrial textile processing.

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 (moisture-sensitive); ensure the original packaging is resealed tightly after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Reddish-brown powder
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 7.0%
Water Insoluble Matter	≤ 0.2%
Dye Content	≥ 50%
pH (1% Solution)	5.5 - 7.5
Solubility in Water (50°C)	≥ 100 g/L
Fixation Rate	≥ 70% (Standard conditions)
Fastness Properties (Typical)	Wash: 4-5, Light: 5-6, Rubbing: 4-5

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