Description

Reactive Red 218 is a high-performance, water-soluble reactive dye belonging to the azo dye class, designed for covalent bonding with cellulosic fibers. Its primary value lies in providing excellent color fastness, brilliant red shades, and high fixation rates, which are critical for cost-effective and durable textile coloration. This product is essential for manufacturers in the textile industry, particularly for dyeing and printing cotton, viscose, and other natural fibers, where wash and light fastness are paramount.

Application

• Exhaust dyeing of cotton and viscose yarns and fabrics.
• Continuous pad-dry-steam and pad-batch dyeing processes for cellulosic textiles.
• Textile printing applications for achieving vibrant red hues on natural fabrics.
• Dyeing of hemp, linen, and other cellulosic fiber blends.
• Used in the formulation of specialized dye mixtures for specific shade requirements.
• Potential application in the research and development of new dyeing techniques and colorants.

Basic Information

Product Name	Reactive Red 218
CAS No.	113653-03-5
Molecular Formula	C31H19ClN7Na4O19S6
Molecular Weight	1244.36 g/mol
Synonyms	Reactive Red 218; C.I. Reactive Red 218; Reactive Brilliant Red M-8B; Reactive Red M-8B; Red 218 Reactive Dye; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-6-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, tetrasodium salt; C.I. 182157
EINECS	Contact for details

Quality Control

Our production of Reactive Red 218 adheres to stringent quality management protocols 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 to guarantee it meets your specific technical requirements.

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 container is sealed after each use to prevent moisture absorption which may affect performance.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
Fixation Rate	≥ 70%
Dusting Grade	Low dusting

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