Description

Reactive Red 141 is a high-performance, bifunctional reactive dye designed for demanding textile coloration processes. Its primary value lies in delivering brilliant, wash-fast red shades with excellent reproducibility and cost-efficiency in industrial applications. This dye is essential for manufacturers in the textile industry who require reliable and consistent coloring for cellulosic fibers like cotton and viscose.

Application

• Exhaust dyeing of cotton and other cellulosic fibers.
• Continuous dyeing processes, including pad-batch and pad-steam methods.
• Imparting vibrant and durable red shades to knitted and woven fabrics.
• Used in the coloration of viscose and linen for apparel and home textiles.
• Suitable for dyeing textile blends containing cellulosic components.
• Application in industrial dye houses requiring dyes with good solubility and leveling properties.

Basic Information

Product Name	Reactive Red 141
CAS No.	144940-93-2
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	1134.37 g/mol
Synonyms	Reactive Red HE7B; C.I. Reactive Red 141; Reactive Red HE-7B; Red HE7B; Reactive Brilliant Red HE7B; 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-[[2-methoxy-5-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, sodium salt (1:4)
EINECS	Contact for details

Quality Control

Our Reactive Red 141 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, solubility, and fixation properties. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and application performance is provided with every shipment.

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 incompatible materials. The product is hygroscopic (moisture-sensitive).

Specification

Item	Specification
Appearance	Red Powder
Color Strength	Standard Depth ± 3%
Solubility (50°C)	> 100 g/L
Moisture Content	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Fixation Rate	> 70%
Identification (IR)	Conforms

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