Description

Reactive Green 5 is a synthetic, water-soluble reactive dye belonging to the anthraquinone class, identified by CAS NO 12225-74-0. It is valued for its ability to form covalent bonds with cellulosic and protein fibers, resulting in excellent wash and light fastness properties. This dye is primarily required by the textile industry for dyeing and printing cotton, wool, silk, and nylon, and is also utilized in research and specialty applications.

Application

• Primary application in the textile industry for exhaust and continuous dyeing of cellulosic fibers like cotton, viscose, and linen.
• Used in textile printing processes for creating vibrant green shades with high color yield.
• Dyeing of protein-based fibers such as wool and silk, where it provides good levelness and fastness.
• Coloration of polyamide fibers (nylon) in specific application conditions.
• Employed as a biological stain in histology and microscopy for selective tissue or cellular component staining.
• Potential use in the preparation of colored polymers or as a tracer in research and development.
• Used in laboratory settings for teaching and experimental dyeing processes.

Basic Information

Product Name	Reactive Green 5
CAS No.	12225-74-0
Molecular Formula	C29H20ClN7Na4O19S6
Molecular Weight	1330.31 g/mol (as sodium salt)
Synonyms	Reactive Green HE-4BD; C.I. Reactive Green 5; Reactive Green HE4B; Lanasol Green 5B; Remazol Green 5B; Drimarene Green P-5B; Anthraquinone Green Reactive Dye; 1-Amino-4-[[4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our Reactive Green 5 is manufactured under strict process controls to ensure batch-to-batch consistency and high performance. Quality is verified against key parameters including color strength, solubility, fixation rate, and fastness properties. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and application test results 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 original packaging is resealed tightly after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Dark green to bluish-green powder
Identification (IR)	Conforms to structure
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility (at 50°C)	≥ 100 g/L
pH (1% Solution)	5.5 - 7.5
Dye Content	≥ 70%
Fixation Rate (on Cotton)	≥ 70%
Fastness to Washing	≥ 4-5 (ISO 105-C03)
Fastness to Light	≥ 5-6 (ISO 105-B02)

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