Description

C.I. Acid Blue 327 is a synthetic acid dye belonging to the anthraquinone chemical class, valued for its bright and stable blue hue. This high-performance colorant is engineered to deliver excellent color fastness and compatibility with protein-based substrates. It is primarily used by manufacturers in the textile, leather, and specialty paper industries seeking reliable and vibrant coloration. Consistent batch-to-batch quality ensures predictable results in demanding industrial dyeing and printing processes.

Application

• Dyeing of natural protein fibers such as wool and silk.
• Coloration of nylon and other synthetic polyamide textiles.
• Leather finishing and dyeing for apparel, upholstery, and accessories.
• Manufacture of specialty and decorative papers requiring acid-fast dyes.
• Ink formulation for specific marking and printing applications.
• Historical or restoration dyeing processes for textiles.

Basic Information

Product Name	C.I. Acid Blue 327
CAS No.	77907-14-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Acid Blue 327; C.I. 62059; Anthraquinone Blue 327; Acid Leather Blue 327; Acid Nylon Blue 327; 1-Amino-4-(3-((4-aminophenyl)amino)propylamino)anthraquinone (related structure); Wool Blue 327
EINECS	Contact for details

Quality Control

Our production of C.I. Acid Blue 327 adheres to stringent quality management protocols to ensure purity, color strength, and batch consistency. Every lot is tested against key parameters including identification, assay, and shade value. A comprehensive Certificate of Analysis (COA) documenting these results is provided with each shipment to support your quality assurance and regulatory compliance needs.

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 and sources of ignition. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Blue to dark blue powder or granules
Identification (IR)	Conforms to standard
Color Strength	100% ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard
Fastness Properties	Contact for details

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