Description

Acid Blue 9 Ammonium Salt is a synthetic, water-soluble triphenylmethane dye widely recognized for its brilliant blue color. This high-purity colorant is essential for achieving consistent and vibrant hues in a variety of industrial applications. It is a critical raw material for manufacturers in the textile, paper, and specialty ink industries who require reliable, high-strength dyes for their production processes.

Application

• Textile Dyeing and Printing: Primarily used for coloring wool, silk, and nylon fibers, providing excellent color fastness and brightness.
• Paper Coloring: Employed in the production of colored papers, tissues, and decorative paper products.
• Ink Manufacturing: A key component in the formulation of writing inks, stamp pad inks, and other specialty liquid inks.
• Biological Staining: Used in histology and microbiology as a staining agent for microscopic analysis.
• Leather Dyeing: Applied for coloring leather goods, offering a range of blue shades.
• Detergent and Soap Coloring: Incorporated to provide a distinctive blue color to cleaning and personal care products.
• Educational and Craft Supplies: Used in the manufacture of paints, dyes, and pigments for educational and artistic purposes.

Basic Information

Product Name	Acid Blue 9 Ammonium Salt
CAS No.	6371-85-3
Molecular Formula	C37H42N3NaO6S2 • (NH4)x
Molecular Weight	~792.86 g/mol (for disodium salt, ammonium salt variable)
Synonyms	Acid Blue 9; C.I. 42090; Erioglaucine A; FD&C Blue No. 1 Ammonium Salt; Food Blue 2; Alphanine Blue AE; Patent Blue AE; Aniline Blue, water soluble; Brilliant Blue FCF Ammonium Salt; Acid Brilliant Blue FCF
EINECS	228-923-6

Quality Control

Our Acid Blue 9 Ammonium Salt is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for color strength, purity, and solubility. Certificates of Analysis (COA) detailing parameters such as assay, heavy metal content, and subsidiary dyes are available upon request to support your quality assurance protocols.

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.

Specification

Item	Specification
Appearance	Dark blue to blue-violet powder
Identification (IR)	Conforms to standard
Assay (Color Strength)	≥ 85%
Loss on Drying	≤ 15.0%
Water Solubility	Clear, complete solution
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm
Subsidiary Dyes (HPLC)	≤ 5.0%

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