Description

Acid Blue 277 is a synthetic acid dye belonging to the anthraquinone chemical class, valued for its bright blue hue and strong affinity for protein fibers. Its primary commercial value lies in providing excellent color fastness properties, including good light and wash fastness, making it a reliable choice for demanding dyeing applications. This dye is essential for manufacturers in the textile and leather industries seeking vibrant, durable coloration for nylon, wool, and silk products.

Application

• Textile Dyeing: Primary application for dyeing nylon, wool, silk, and other protein-based fibers to achieve a bright blue shade.
• Leather Coloring: Used in the dyeing of leather goods, providing rich and even coloration.
• Ink Manufacturing: Serves as a colorant component in the formulation of specialized inks.
• Paper Staining: Employed for the coloration of paper products where specific color properties are required.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its affinity for certain tissues.

Basic Information

Product Name	Acid Blue 277
CAS No.	25797-81-3
Molecular Formula	C20H14N2Na2O8S2
Molecular Weight	528.44 g/mol
Synonyms	Acid Blue 277; C.I. 62058; Sodium 1-amino-4-[(4-aminophenyl)amino]-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate; Acid Blue BRL; Anthraquinone Blue BRL; Acid Blue B; Acid Leather Blue BRL; Telon Blue BRL
EINECS	Contact for details

Quality Control

Our Acid Blue 277 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot undergoes comprehensive analytical testing, including spectrophotometric purity analysis and strength assessment, to meet precise colorant specifications. A Certificate of Analysis (COA) detailing purity, shade, and physical properties 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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to Standard
Fastness Properties (Typical)	Light: 5-6; Wash: 4-5

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