Description

Hydrogen [4-[[4-(Dimethylamino)Phenyl](2-Hydroxy-3,6-Disulphonato-1-Naphthyl)Methylene]Cyclohexa-2,5-Dien-1-Ylidene]Dimethylammonium is a high-purity, water-soluble triarylmethane dye salt, widely recognized for its brilliant green color and excellent tinctorial strength. This compound is valued for its exceptional color stability and compatibility in various demanding industrial formulations. It serves as a critical component for manufacturers in the textile, paper, ink, and specialty chemical sectors requiring precise and vibrant green coloration.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon to achieve bright green shades.
• Paper Coloring: Used in the production of colored papers, including specialty and decorative papers.
• Ink Manufacturing: A key pigment for formulating green printing inks, including for packaging and security applications.
• Biological Staining: Employed as a histological stain in microscopy for contrast and visualization.
• Liquid Crystal Displays (LCDs): Potential use as a dichroic dye in guest-host LCD systems.
• Chemical Indicator: Can be utilized as a pH indicator or in analytical chemistry due to its color-changing properties.
• Leather Dyeing: Applied in the leather industry for coloring finished leather goods.
• Research & Development: Serves as a standard or intermediate in synthetic organic chemistry and material science research.

Basic Information

Item	Detail
Product Name	Hydrogen [4-[[4-(Dimethylamino)Phenyl](2-Hydroxy-3,6-Disulphonato-1-Naphthyl)Methylene]Cyclohexa-2,5-Dien-1-Ylidene]Dimethylammonium
CAS No.	25317-10-6
Molecular Formula	C29H29N2O8S2- • H+
Molecular Weight	605.68 g/mol
Synonyms	Acid Green 50; C.I. 44090; Wool Green S; Lissamine Green B; Food Green 3; FD&C Green No. 3; Green S; E142; 4-[[4-(Dimethylamino)phenyl][4-(dimethyliminio)cyclohexa-2,5-dien-1-ylidene]methyl]-2-hydroxy-3,6-naphthalenedisulfonate
EINECS	246-815-9

Quality Control

Our production of Hydrogen [4-[[4-(Dimethylamino)Phenyl](2-Hydroxy-3,6-Disulphonato-1-Naphthyl)Methylene]Cyclohexa-2,5-Dien-1-Ylidene]Dimethylammonium adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for color strength, purity, and solubility. Certificates of Analysis (COA) detailing results for assay, impurity profile, and physical parameters are available upon request. We can supply grades compliant with various industry standards, including those for food colorants (where regulated) and technical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark green to blue-green powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Color Strength	100 ± 5% (vs. Standard)

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