Description

Acid Blue 9 is a synthetic organic dye belonging to the triphenylmethane class, widely recognized for its vibrant blue color. It is a critical component for imparting stable and intense coloration in a variety of industrial and commercial products. This dye is essential for manufacturers in the textile, paper, and specialty ink industries seeking reliable and consistent color performance. Its utility also extends to applications in biological staining and as a colorant in certain consumer goods.

Application

• Textile Dyeing: Primary application for coloring wool, silk, and nylon fibers.
• Paper Coloring: Used in the production of colored papers, including decorative and specialty grades.
• Ink Manufacturing: A key pigment for writing inks, stamp pad inks, and other liquid colorants.
• Biological Staining: Employed in microscopy as a histological stain for tissue samples.
• Leather Dyeing: Provides coloration for finished leather goods.
• Soap and Detergent Coloring: Used to add color to cosmetic and cleaning product formulations.

Basic Information

Product Name	Acid Blue 9
CAS No.	94082-76-5
Molecular Formula	C37H36N3O6S2-2 · 2Na+
Molecular Weight	730.80 g/mol (as disodium salt)
Synonyms	Acid Blue 9; C.I. Acid Blue 9; Patent Blue AE; Erioglaucine A; Food Blue 3; C.I. 42090; FD&C Blue No. 1; Alphazurine FG; Aniline Blue, water soluble
EINECS	Contact for details

Quality Control

Our Acid Blue 9 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous in-house specifications, which include parameters for color strength, hue, and impurity profiles. A Certificate of Analysis (COA) detailing the results of these tests, including assay by HPLC and identification by FT-IR, is provided with every shipment to guarantee compliance with your technical requirements.

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 when not in use to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Dark blue to blue-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 85.0%
Color Strength	95 - 105%
Loss on Drying	≤ 10.0%
Water Solubility	Completely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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