Description

Acid Blue 120 is a synthetic anthraquinone acid dye known for its bright, clear blue color and good lightfastness. This high-purity dye is valued for its strong affinity to protein fibers like wool and silk, providing excellent color yield and wash-fastness. It is a critical component for textile manufacturers, leather tanneries, and specialty ink producers seeking reliable and vibrant blue shades for high-quality products.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers to achieve brilliant blue hues.
• Leather Finishing: Used in the coloration of leather goods, providing deep, uniform blue shades.
• Ink Manufacturing: A key colorant in the formulation of specialty inks for writing instruments and markers.
• Paper Staining: Employed for coloring high-grade papers and decorative paper products.
• Biological Staining: Utilized in specific histological and microbiological staining protocols in laboratory settings.
• Food Contact Material Coloring: For coloring packaging materials where applicable under relevant regulatory frameworks.

Basic Information

Product Name	Acid Blue 120
CAS No.	3529-01-9
Molecular Formula	C₄₇H₄₈N₃NaO₇S₂
Molecular Weight	854.0 g/mol
Synonyms	Acid Blue AS; C.I. Acid Blue 120; Acid Blue E-AS; Anthraquinone Blue AS; Wool Blue AS; Nylosan Blue N-BL; Suracid Blue E-AS; Acid Brilliant Blue AS; 1-Amino-4-(cyclohexylamino)-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid, sodium salt
EINECS	222-555-1

Quality Control

Our Acid Blue 120 is manufactured under a strict quality management system. Each batch is tested to ensure it meets high-purity standards with consistent color strength and shade. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as purity, dye content, and impurity profiles. Our quality commitment ensures reliability for your critical industrial applications.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue powder
Identification (IR)	Conforms to standard
Assay (Dye Content)	≥ 95%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade & Strength	Matches reference standard (± 5%)
pH (1% Solution)	6.0 - 8.0

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