Description

Methyl Green CAS NO 7438-47-3 is a synthetic cationic dye belonging to the triarylmethane class, widely recognized for its vibrant green color and specific staining properties. This compound is a critical tool in biological and histological research, enabling clear visualization and differentiation of cellular and tissue components. It is an essential reagent for laboratories and industrial facilities in the life sciences, diagnostics, and specialized material staining sectors.

Application

• Histological Staining: A primary component in staining solutions for visualizing cell nuclei and chromatin in tissue sections, often used in combination with other dyes.
• Microbiological Analysis: Employed as a selective stain in bacteriology and cytology to differentiate bacterial types and cellular structures under a microscope.
• Electrophoresis Marker: Serves as a tracking dye in agarose and polyacrylamide gel electrophoresis (PAGE) to monitor the progress of nucleic acid separation.
• Textile Dyeing: Used for dyeing silk, wool, and other protein-based fibers, as well as in the coloration of paper and leather.
• Indicator Applications: Can function as a pH indicator and is used in certain redox titration procedures.
• Educational & Research: A standard reagent in academic and industrial research laboratories for teaching and experimental protocols involving biological staining.

Basic Information

Product Name	Methyl Green
CAS No.	7438-47-3
Molecular Formula	C26H33Cl2N3
Molecular Weight	458.47 g/mol
Synonyms	Basic Green 5; C.I. 42585; Ethyl Green; Methyl Green O; Methylgreen; Double Green SF; Brilliant Green S; Iodine Green; C.I. Basic Green 5; Methyl Green zinc chloride salt
EINECS	231-121-4

Quality Control

Our Methyl Green is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including identity confirmation by IR spectroscopy, purity assessment by HPLC, and verification of key physical parameters. A Certificate of Analysis (COA) detailing the specific results is provided with every shipment to ensure traceability and compliance with your research or production standards.

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.

Specification

Item	Specification
Appearance	Dark green crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0 %
Solubility	Soluble in water, slightly soluble in ethanol
Absorption Maximum	~630-640 nm (in water)

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