Description

C.I. Acid Blue 204 is a synthetic acid dye belonging to the anthraquinone chemical class, known for its bright and stable blue hue. This high-performance colorant is valued for its excellent light and wash fastness properties, making it a reliable choice for demanding applications. It is primarily used in the textile industry for dyeing protein fibers like wool, silk, and nylon, as well as in the coloration of leather, paper, and inks.

Application

• Dyeing of natural protein fibers such as wool and silk.
• Coloration of synthetic polyamide fibers including nylon and polyamide 6,6.
• Leather finishing and dyeing for automotive, fashion, and upholstery applications.
• Production of colored paper and specialty paper products.
• Manufacturing of inks, including writing inks and some specialty printing inks.
• As a colorant for anodized aluminum in architectural and decorative finishes.

Basic Information

Product Name	C.I. Acid Blue 204
CAS No.	61724-00-3
Molecular Formula	C32H26N4Na2O8S2
Molecular Weight	696.66 g/mol
Synonyms	Acid Blue 204; Acid Blue AR; C.I. 61211; Acid Leather Blue AR; Nylosan Blue N-BLN; Telon Blue ARL; Supranol Blue AR; Anthraquinone Blue AR; 1-Amino-4-(3-((4-((2,5-dichlorophenyl)amino)-3-sulfonatophenyl)amino)-2,4-disulfonatophenyl)amino)-9,10-dihydro-9,10-dioxoanthracene-2-sulfonate disodium salt
EINECS	262-966-8

Quality Control

Our production of C.I. Acid Blue 204 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance. The product is manufactured and tested to meet industry-standard specifications for acid dyes, with key parameters including color strength, shade, solubility, and fastness properties. A Certificate of Analysis (COA) detailing purity, physical properties, and performance tests 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). Keep away from incompatible materials. The product is light-sensitive and should be stored away from direct light exposure to maintain color stability.

Specification

Item	Specification
Appearance	Dark blue powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0
Fastness to Light	≥ 5-6 (Standard test)
Fastness to Washing	≥ 4-5 (Standard test)

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