Description

Acid Blue 9 is a synthetic, water-soluble triarylmethane dye known for its brilliant blue color. This high-purity colorant is essential for achieving consistent, vibrant hues in a wide range of industrial applications. It is a critical raw material for manufacturers in the textile, paper, and specialty ink industries who require reliable, high-quality dyes for their production processes. Acid Blue 9 CAS NO 2650-18-2 is valued for its strong tinctorial strength and compatibility with various substrates.

Application

• Textile Dyeing: Primarily used for dyeing wool, silk, and nylon fibers to achieve bright blue shades.
• Paper Coloring: Employed in the production of colored papers, tissues, and specialty packaging materials.
• Ink Manufacturing: A key component in the formulation of writing inks, stamp pad inks, and other aqueous-based ink systems.
• Biological Staining: Used in histology and microbiology as a staining agent for microscopic analysis.
• Leather Processing: Applied in the dyeing of leather goods to provide uniform and durable coloration.
• Detergent & Soap Coloring: Incorporated to color household and industrial cleaning products.
• Educational & Hobby Kits: Found in chemistry sets and craft supplies for educational demonstrations and creative projects.

Basic Information

Product Name	Acid Blue 9
CAS No.	2650-18-2
Molecular Formula	C37H27N3Na2O9S3
Molecular Weight	799.80 g/mol
Synonyms	Brilliant Blue FCF; FD&C Blue No. 1; Erioglaucine; Acid Blue 9, disodium salt; C.I. 42090; Food Blue 2; D&C Blue No. 4; E 133
EINECS	220-075-2

Quality Control

Our Acid Blue 9 is manufactured under a strict quality management system to ensure batch-to-batch consistency and compliance with relevant industry specifications, including those for food-grade (where applicable) and industrial use. Each lot is tested for critical parameters such as color strength, purity, and heavy metal content. Certificates of Analysis (COA) documenting full test results 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 tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Blue powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 85%
Color Strength	100 ± 5%
Loss on Drying	≤ 15.0%
Water Insoluble Matter	≤ 0.2%
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.