Description

C.I. Basic Green 8 CAS NO 12221-47-5 is a synthetic cationic (basic) dye belonging to the triarylmethane class, valued for its intense green color and strong affinity for polyacrylonitrile fibers. This compound is a critical component for achieving vibrant, wash-fast coloration in the textile industry, particularly for acrylic and modacrylic materials. Industrial buyers in the textile dyeing and printing sectors rely on this pigment for its consistent performance and commercial availability.

Application

• Textile Dyeing: Primary application for dyeing acrylic, modacrylic, and other cationic-dyeable synthetic fibers to achieve brilliant green shades.
• Paper Coloring: Used in the manufacture of specialty colored papers, including decorative and security papers.
• Leather Finishing: Employed in the dyeing of leather goods to provide rich, uniform color.
• Ink Formulation: A colorant component in the production of inks for various printing applications.
• Biological Staining: Utilized in histology and microbiology as a staining agent for microscopic analysis.
• Industrial Markers: Suitable for creating colored markers and tracers in non-consumer industrial processes.

Basic Information

Product Name	C.I. Basic Green 8
CAS No.	12221-47-5
Molecular Formula	C37H40N2O6S2
Molecular Weight	664.85 g/mol
Synonyms	Basic Green 8; C.I. 48000; Aizen Cathilon Green GLH; Astrazon Green G; Maxilon Green 5G; Sevron Green B; Sandocryl Green B-GSL; Triarylmethane Green 8; 4-[(4-Dimethylaminophenyl)-[4-(ethylamino)-1-naphthyl]methylene]-N-ethyl-2,5-cyclohexadien-1-iminium methyl sulfate
EINECS	Contact for details

Quality Control

Our production of C.I. Basic Green 8 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed for key parameters including color strength, shade, solubility, and impurity profile. Certificates of Analysis (COA) documenting these results are provided to guarantee the product meets the specifications required for your industrial application.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark green powder or crystalline powder
Identification (IR)	Conforms to standard
Color Strength	100% ± 3% (vs. Standard)
Shade	Matches reference standard
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Particle Size (Typical)	Passes through 80 mesh

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