Description

Hydrogen [4-[4-(Diethylamino)-3',4'-Bis(Sulphonatomethyl)Benzhydrylidene]Cyclohexa-2,5-Dien-1-Ylidene]Diethylammonium, Monosodium Salt is a specialized, water-soluble anionic dye belonging to the triarylmethane class, known for its intense color and high tinctorial strength. This compound is valued for its ability to impart a brilliant, stable hue in demanding industrial applications where color fastness and chemical compatibility are critical. It serves as a key functional component for manufacturers in the textile, paper, and specialty ink industries seeking consistent and reliable coloration.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers, providing vibrant shades with good wash fastness.
• Paper Coloring: Used in the production of colored papers, including specialty packaging and decorative papers.
• Ink Formulation: A critical pigment for manufacturing writing inks, stamp pad inks, and other liquid colorants.
• Biological Staining: Employed as a histological stain in laboratory settings for microscopic analysis.
• Leather Finishing: Applied in the dyeing process for leather goods to achieve specific color profiles.
• Indicator Chemistry: Can be utilized in the synthesis of pH indicators and other analytical reagents.

Basic Information

Product Name	Hydrogen [4-[4-(Diethylamino)-3',4'-Bis(Sulphonatomethyl)Benzhydrylidene]Cyclohexa-2,5-Dien-1-Ylidene]Diethylammonium, Monosodium Salt
CAS No.	68516-63-2
Molecular Formula	C31H39N2NaO6S2
Molecular Weight	622.77 g/mol
Synonyms	Acid Blue 90; C.I. 42655; Benzenemethanaminium, N-[4-[4-(diethylamino)phenyl][4-(ethylamino)-3-sulfophenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-, hydroxide, inner salt, sodium salt; Wool Fast Blue BL; Sodium (4-(4-(diethylamino)-α-(4-(ethylamino)-3-sulfophenyl)benzylidene)-2,5-cyclohexadien-1-ylidene)diethylammonium hydroxide inner salt; Acid Blue 90, monosodium salt; Aniline Blue, water soluble (variant).
EINECS	Contact for details

Quality Control

Our production of Acid Blue 90 adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed for critical parameters including color strength, hue, and impurity profile to meet the specifications required by the textile and ink industries. Certificates of Analysis (COA) documenting purity, assay, and physical properties are available upon request to support your quality assurance and regulatory compliance needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark blue to violet powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100% ± 5% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Completely soluble
Ash Content	Max. 1.0%
Heavy Metals (as Pb)	Max. 20 ppm

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