Description

C.I. Acid Blue 72 is a synthetic acid dye belonging to the anthraquinone chemical class, valued for its bright and stable blue color. This product is essential for achieving consistent, high-quality coloration in various industrial substrates. It is primarily used by manufacturers in the textile, leather, and paper industries for dyeing protein-based fibers like wool, silk, and nylon.

Application

• Primary dyeing of wool, silk, and other protein-based textile fibers.
• Coloration of leather goods, providing vibrant and durable shades.
• Dyeing of nylon and polyamide fibers in the synthetic textiles sector.
• Manufacturing of colored paper and specialty paper products.
• Used in the formulation of inks for specific marking and printing applications.
• Potential use as a biological stain in laboratory and microscopy settings.

Basic Information

Product Name	C.I. Acid Blue 72
CAS No.	12219-17-9
Molecular Formula	C20H13N2NaO5S
Molecular Weight	416.38 g/mol
Synonyms	Acid Blue 72; Acid Blue A; C.I. 62045; Alizarine Brilliant Blue BS; Anthraquinone Blue SWF; D&C Blue No. 9; Acid Leather Blue A; Sodium 1-amino-4-(cyclohexylamino)-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
EINECS	235-386-6

Quality Control

Our C.I. Acid Blue 72 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot undergoes comprehensive analysis, including spectrophotometric purity, strength, and shade assessment against industry standards. Certificates of Analysis (COA) detailing all quality parameters 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). Keep away from incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
pH (1% Solution)	6.0 - 8.0
Shade	Matches Standard

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