Description

Acid Blue 20 is a synthetic acid dye belonging to the anthraquinone class, valued for its bright blue color and good lightfastness. Its primary commercial value lies in providing consistent, vibrant coloration with strong affinity for protein-based fibers like wool, silk, and nylon. This dye is essential for manufacturers in the textile, leather, and paper industries seeking reliable and efficient blue shades for their products. Acid Blue 20 CAS NO 12771-92-5 is also utilized in specialized applications such as biological staining and ink formulations.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and polyamide (nylon) fibers to achieve bright blue hues.
• Leather Coloring: Used in the tanning industry for coloring leather goods, providing good penetration and color uniformity.
• Paper Staining: Employed in the production of specialty papers, including decorative and security papers.
• Biological Stains: Serves as a histological stain in laboratory settings for microscopic analysis.
• Ink Manufacturing: A colorant component in the formulation of certain inks, including stamp pad and flexographic inks.
• Wood Staining: Applied for coloring wood and wood-based products to enhance aesthetic appeal.

Basic Information

Product Name	Acid Blue 20
CAS No.	12771-92-5
Molecular Formula	C₂₀H₁₃N₂NaO₅S
Molecular Weight	416.38 g/mol
Synonyms	Acid Blue 20; C.I. 20425; Acid Blue AS; Alizarine Brilliant Blue BS; Anthraquinone Blue SWF; C.I. Acid Blue 20; Wool Blue BS; Acid Leather Blue BS; Dermina Blue BS; Suracid Blue BS; Naphthol Blue Black; Acid Brilliant Blue BS
EINECS	235-835-1

Quality Control

Our Acid Blue 20 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against comprehensive specifications for color strength, shade, solubility, and impurity profiles. A detailed Certificate of Analysis (COA) documenting purity, physical properties, and conformance is provided with every shipment to support your quality assurance protocols.

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 strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	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%
Ash Content	≤ 1.0%
Shade	Conforms to Standard
Solubility in Water	Conforms

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