Description

Reactive Red 250 is a high-performance, bifunctional reactive dye belonging to the azo class, specifically engineered for demanding textile coloration processes. Its primary value lies in providing excellent color yield, superior wet fastness properties, and high fixation efficiency on cellulosic fibers like cotton and viscose. This dye is essential for textile manufacturers and dye houses seeking vibrant, durable red shades with reliable batch-to-batch consistency. The compound is commercially supplied as a powder and is identified by the CAS registry number 125830-49-1.

Application

Reactive Red 250 is a versatile dye with key applications in the textile industry and related fields:

• Exhaust Dyeing of Cotton: Primary application for dyeing cotton yarns and fabrics in jet, overflow, and winch dyeing machines.
• Continuous Dyeing Processes: Used in pad-batch and pad-steam ranges for efficient, large-scale production of cellulosic textiles.
• Viscose and Lyocell Dyeing: Effective for coloring regenerated cellulosic fibers, providing bright shades with good fastness.
• Union Dyeing: Suitable for dyeing blends of cotton with polyester or nylon when used in appropriate combination dyeing processes.
• Home Textiles and Apparel: Ideal for products requiring high wash and light fastness, such as towels, bed linens, and casual wear.
• Technical Textiles: Can be used for coloring textiles where color consistency and durability are critical.

Basic Information

Product Name	Reactive Red 250
CAS No.	125830-49-1
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	Contact for details
Synonyms	Reactive Red HE-7B; C.I. Reactive Red 250; Reactive Red HE7B; Red HE-7B; Remazol Red HE7B; Levafix Red E-7B; Sumifix Red HE-7B; Procion Red HE-7B
EINECS	Contact for details

Quality Control

Our production of Reactive Red 250 adheres to stringent quality management protocols to ensure product performance and reliability. Every batch undergoes comprehensive testing, including strength, shade, solubility, and fastness property assessments. We provide Certificates of Analysis (COA) that detail key parameters, ensuring traceability and compliance with customer specifications and general industry standards for textile dyes.

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 stability and prevent caking.

Specification

Item	Specification
Appearance	Reddish-brown powder
Strength (Standard Depth)	100 ± 3 %
Solubility (50°C)	≥ 100 g/L
pH Value (1% Solution)	5.5 - 7.5
Moisture Content	≤ 5.0 %
Dusting Property	Low dusting
Fixation Rate	≥ 70 %
Fastness Properties (Cotton)	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.