Description

Acid Blue 9 Ammonium Salt is a synthetic organic dye belonging to the triarylmethane class, widely recognized for its vibrant blue color. This high-purity ammonium salt form offers enhanced solubility and stability, making it a critical component for precise coloration in demanding industrial applications. It is primarily utilized by manufacturers in the textile, paper, and specialty ink industries where consistent color strength and fastness properties are required.

Application

• Textile Dyeing: Used for coloring wool, silk, and nylon fibers, providing bright blue shades.
• Paper Coloring: Employed in the production of colored papers, including decorative and specialty grades.
• Ink Manufacturing: A key pigment for writing inks, stamp pad inks, and other aqueous-based ink formulations.
• Biological Staining: Utilized in microscopy as a histological stain for diagnostic and research purposes.
• Leather Finishing: Applied in the dyeing of leather goods to achieve uniform blue coloration.
• Detergent & Soap Coloring: Incorporated to provide a consistent blue hue to cleaning and personal care products.

Basic Information

Product Name	Acid Blue 9 Ammonium Salt
CAS No.	37307-56-5
Molecular Formula	C37H42N3O6S2•NH3
Molecular Weight	~ 715.91 g/mol (for free acid, varies with salt form)
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; Ammonium salt of [4-[(4-diethylaminophenyl)-(2,4-disulfophenyl)methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium hydroxide inner salt
EINECS	Contact for details

Quality Control

Our Acid Blue 9 Ammonium Salt is manufactured under a strict quality management system. Each batch is tested to ensure it meets stringent specifications for color value, purity, and heavy metal content. Certificates of Analysis (COA) detailing specific test results, including identification by IR spectroscopy and assay by HPLC, are provided with every shipment to guarantee consistent quality and traceability.

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 material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to blue-violet powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 85% (as colorant)
Loss on Drying	≤ 10.0 %
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm

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