Description

Aniline Blue, Alcohol Soluble (C.I. 42775) is a triphenylmethane dye belonging to the aniline blue family, characterized by its solubility in alcohols. This property makes it a versatile colorant and staining agent for hydrophobic or non-aqueous systems where water-soluble dyes are ineffective. It is primarily utilized in industrial applications and specialized laboratory staining procedures. The compound is supplied under the CAS registry number 61489-48-3.

Application

• Biological Staining: Used as a component in specialized histological stains, such as Mallory's trichrome stain, for differentiating connective tissue (collagen) in microscope slide preparations.
• Industrial Dyeing: Employed as a colorant for plastics, resins, lacquers, and printing inks where alcohol-based solvent systems are preferred.
• Wood Staining: Suitable for staining wood and other porous materials in alcohol-based stain formulations.
• Paper and Leather Coloring: Applied in the tinting of specialty papers, leather goods, and other materials compatible with solvent dyes.
• Ink Manufacturing: A pigment source for specialty inks, including stamp pad inks and certain writing inks.
• Research & Development: Serves as a chemical intermediate or reference standard in synthetic chemistry and dye research laboratories.

Basic Information

Product Name	Aniline Blue, Alcohol Soluble
CAS No.	61489-48-3
Molecular Formula	C32H27N3O9S3•Na (Approximate, for main component)
Molecular Weight	~737.8 g/mol (Approximate)
Synonyms	Aniline Blue WS; Spirit Soluble Aniline Blue; C.I. 42775; C.I. Solvent Blue 3; China Blue; Methyl Blue; Acid Blue 93 (water-soluble form); Triphenyl Rosaniline Trisulfonate; Anilinblau, alkohollöslich
EINECS	Contact for details

Quality Control

Our Aniline Blue, Alcohol Soluble is produced under a strict quality management system. Each batch is tested to ensure consistent color strength, solubility profile, and purity suitable for its intended industrial and technical applications. While specific pharmacopeial standards (USP/EP) may not apply, we guarantee batch-to-batch consistency. A Certificate of Analysis (COA) detailing key parameters is available upon request.

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). This product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent absorption of atmospheric moisture which may affect performance.

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to standard
Solubility (in Ethanol)	Completely soluble, clear solution
Color Strength	≥ 95% (vs. reference standard)
Loss on Drying	≤ 5.0 %
Ash Content	≤ 1.0 %

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