Description

C.I.Acid Blue 271 is a synthetic acid dye belonging to the anthraquinone chemical class, identified by CAS No. 61967-90-6. This high-performance dye is valued for its excellent color fastness properties, including strong lightfastness and wash resistance, making it a reliable choice for demanding applications. It is primarily utilized in the textile industry for dyeing protein fibers like wool and silk, as well as polyamide fibers such as nylon, delivering vibrant and durable blue shades.

Application

• Primary dyeing of wool and silk textiles.
• Coloration of nylon and other polyamide fibers.
• Used in the production of leather goods for consistent blue hues.
• Ink formulation for specialized printing applications.
• As a colorant for certain types of paper.
• Potential use in the coloration of food packaging materials where applicable regulations are met.

Basic Information

Product Name	C.I.Acid Blue 271
CAS No.	61967-90-6
Molecular Formula	C32H26N4Na2O8S2
Molecular Weight	696.66 g/mol
Synonyms	Acid Blue 271; C.I. 62055; Acid Blue AR; Anthraquinone Blue AR; Acid Leather Blue AR; Nylosan Blue N-BL; Telon Blue ARL; Acid Fast Blue AR; Sodium 1-amino-4-[(4-aminophenyl)amino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
EINECS	Contact for details

Quality Control

Our production of C.I.Acid Blue 271 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 comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and conformance to specification is provided with every shipment.

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 to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Shade	Conforms to Standard
Fastness Properties (Light, Wash)	≥ 4-5 (Standard)

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