Description

Acid Blue 29 is a synthetic anthraquinone-based acid dye known for its vibrant blue color and good lightfastness. This product is essential for providing consistent, high-quality coloration in demanding industrial applications where durability and chemical stability are paramount. It is primarily utilized by manufacturers in the textile, leather, and paper industries for dyeing protein fibers like wool and silk, as well as for specialty ink formulations.

Application

• Primary dyeing of wool, silk, and other protein-based fibers in the textile industry.
• Coloration of leather goods, providing rich and stable blue shades.
• Manufacturing of writing inks, stamp pad inks, and other specialty inks.
• Dyeing of paper and paperboard for decorative or functional purposes.
• As a colorant for certain types of plastics and coatings.
• Used in biological staining applications for microscopy.
• Potential use as a tracer or marker in industrial processes.

Basic Information

Product Name	Acid Blue 29
CAS No.	5850-35-1
Molecular Formula	C₂₂H₁₄N₂O₆S₂
Molecular Weight	466.49 g/mol
Synonyms	Acid Blue 29; C.I. 20460; Alizarine Brilliant Blue BS; Anthraquinone Blue SWF; D&C Blue No. 9; Acid Blue AS; C.I. Acid Blue 29; Sodium 1-amino-4-(cyclohexylamino)-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
EINECS	227-474-5

Quality Control

Our Acid Blue 29 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analysis, including identity confirmation, purity assay, and tests for key impurities. A Certificate of Analysis (COA) detailing all test results is provided with every shipment 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	Dark blue powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade & Strength	Within agreed commercial tolerance vs. standard
pH (1% Solution)	6.0 - 8.0

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