Description

C.I. Reactive Green 8 is a high-purity, reactive dye belonging to the chlorotriazine class, designed for covalent bonding with cellulosic fibers. Its primary value lies in delivering brilliant, wash-fast green shades with excellent reproducibility in industrial dyeing processes. This product is essential for textile manufacturers, specialty ink formulators, and research laboratories requiring a reliable and consistent colorant for cellulose, nylon, and silk substrates.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, viscose, and other cellulosic fibers.
• Printing Inks: Used in the formulation of specialty inks for textile printing to achieve vibrant green hues.
• Research & Development: Serves as a standard or intermediate in chemical research for dye synthesis and photochemical studies.
• Leather Coloring: Employed in the dyeing of leather goods where reactive fixation is required.
• Paper Staining: Applied for specialty paper coloring where high color fastness is needed.
• Biological Staining: Potential use as a histological stain in laboratory settings.

Basic Information

Product Name	C.I. Reactive Green 8
CAS No.	12225-77-3
Molecular Formula	C29H20ClN7Na4O19S6
Molecular Weight	1127.33 g/mol
Synonyms	Reactive Green HE-4BD; Reactive Green H-E4BD; C.I. 18295; Reactive Green 8; Triazine Reactive Green 8; Sodium 4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-5-hydroxy-3-[[4-[[4-[[4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-5-hydroxy-6-sulfo-2-naphthyl]azo]-2-sulfophenyl]azo]-5-sulfo-2-naphthyl]azo]-6-(phenylamino)-2,7-naphthalenedisulfonate
EINECS	Contact for details

Quality Control

Our C.I. Reactive Green 8 is manufactured under a strict quality management system. Each batch undergoes rigorous testing for critical parameters including color strength, shade, solubility, and reactive group content to ensure batch-to-batch consistency and performance in your application. A Certificate of Analysis (COA) detailing purity, physical properties, and performance metrics 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 strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Dark green powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 25°C)
pH (1% Solution)	6.0 - 8.0
Dye Content	≥ 70%
Ash Content	≤ 20%

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