Description

C.I.Acid Blue 274 is a synthetic acid dye belonging to the anthraquinone chemical class, identified by CAS No. 61967-92-8. It is valued for its bright, vivid blue hue and strong affinity for protein-based fibers like wool, silk, and nylon, offering excellent wash and light fastness properties. This dye is essential for manufacturers in the textile, leather, and specialty paper industries seeking consistent, high-quality coloration for their products.

Application

• Primary dyeing and printing of wool, silk, and nylon textiles.
• Coloration of leather goods, including footwear, garments, and accessories.
• Manufacturing of colored specialty papers and security inks.
• Dyeing of feathers and other natural protein materials.
• Production of biomass stains and laboratory reagents for histological applications.
• As a colorant for select anodized aluminum finishes.

Basic Information

Product Name	C.I.Acid Blue 274
CAS No.	61967-92-8
Molecular Formula	C32H26N4Na2O8S2
Molecular Weight	696.66 g/mol
Synonyms	Acid Blue 274; C.I. 62063; Acid Blue A; Anthraquinone Blue A; Acid Leather Blue A; Sodium 1-amino-4-[(4-aminophenyl)amino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate; Disodium 1-amino-4-(4-aminophenylamino)anthraquinone-2-sulfonate
EINECS	Contact for details

Quality Control

Our production of C.I.Acid Blue 274 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing these results is provided with every shipment to support your quality assurance processes.

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.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0
Ash Content	≤ 30.0%

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