Description

Acid Ethyl Blue is a synthetic organic dye belonging to the acid dye class, characterized by its distinct blue color and anionic properties. This compound is valued for its strong affinity for protein fibers like wool and silk, as well as its utility in specialized staining applications. It serves as a critical component for manufacturers and researchers in the textile, biological staining, and analytical chemistry sectors.

Application

• Textile Dyeing: Primary application for dyeing proteinaceous fibers such as wool, silk, and nylon, providing good wash-fastness.
• Biological Staining: Used as a histological stain in microscopy to differentiate tissue components.
• Indicator Chemistry: Potential use as a pH indicator or a redox indicator in analytical procedures.
• Ink Formulation: A colorant for specialty inks, including those for pens and security applications.
• Paper Coloring: Employed in the tinting of specialty papers and paper products.
• Leather Processing: Used in the dyeing of leather goods to achieve consistent blue shades.

Basic Information

Product Name	Acid Ethyl Blue
CAS No.	5850-55-5
Molecular Formula	C41H44N3O6S2·Na
Molecular Weight	757.92 g/mol (as sodium salt)
Synonyms	Acid Blue 119; C.I. 62075; Ethyl Blue; Ethyl Blue N; Wool Blue S; Acid Leather Blue S; Amido Blue Black 10B; Aizen Acid Ethyl Blue; Kayanol Milling Blue BW; Sodium 4-[(4-ethoxyphenyl)amino]-8-[(4-ethylphenyl)amino]-1-oxo-1H-phenalene-3,6-disulfonate
EINECS	227-450-8

Quality Control

Our Acid Ethyl Blue is manufactured under a strict quality management system. Each batch is tested to ensure it meets precise specifications for color strength, purity, and solubility. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with every shipment to guarantee traceability and compliance.

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). Keep away from incompatible materials and sources of ignition.

Specification

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

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