Description

C.I.Acid Blue 158A is a synthetic acid dye belonging to the anthraquinone chemical class, valued for its bright and stable blue hue. It is a critical component for achieving high-quality, durable coloration in various industrial substrates. This product is essential for manufacturers in the textile, leather, and specialty paper industries seeking reliable and consistent color performance.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and polyamide (nylon) fibers, providing excellent wash and light fastness.
• Leather Finishing: Used for coloring leather goods, offering rich color depth and good adhesion to the protein substrate.
• Paper Coloring: Employed in the production of specialty papers, including decorative and security papers.
• Ink Formulation: A colorant for certain types of inks, particularly where acid-stable dyes are required.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its affinity for specific tissue types.
• Polymer Mass Coloration: Can be used for coloring synthetic polymers during the manufacturing process.

Basic Information

Product Name	C.I.Acid Blue 158A
CAS No.	6370-12-3
Molecular Formula	C20H14N2O5S
Molecular Weight	394.40 g/mol
Synonyms	Acid Blue 158A; C.I. 62155; Acid Blue 158; 1-Amino-4-(3-((4-sulfophenyl)amino)phenyl)amino-9,10-dihydro-9,10-dioxoanthracene-2-sulfonic acid; Anthraquinone Blue 158A; Acid Leather Blue 158A; Supranol Blue BL; Telon Blue ANL
EINECS	228-904-4

Quality Control

Our C.I.Acid Blue 158A is manufactured under a stringent quality management system. Every batch is tested to ensure it meets precise specifications for color strength, shade, solubility, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, moisture content, and heavy metal limits to guarantee batch-to-batch consistency and compliance with industry standards.

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 such as strong oxidizing agents. The product is light-sensitive; prolonged exposure to light should be avoided to prevent degradation.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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