Description

C.I.Acid Blue 76 is a synthetic acid dye belonging to the anthraquinone chemical class. This high-purity colorant is valued for its bright, stable blue hue and excellent fastness properties in demanding applications. It is primarily used by manufacturers in the textile, leather, and specialty paper industries seeking consistent and vibrant coloration. Our supply of CAS 12238-39-0 is backed by rigorous quality control to ensure batch-to-batch reliability for your production processes.

Application

• Textile Dyeing: Used for dyeing protein fibers like wool, silk, and nylon, offering good wash and light fastness.
• Leather Finishing: Imparts a uniform and deep blue color to leather goods, including upholstery, apparel, and accessories.
• Paper Coloring: Employed in the production of specialty papers, including decorative and security papers, where color consistency is critical.
• Ink Formulation: Serves as a colorant in the manufacture of certain inks for non-impact printing and specialty markings.
• Biological Staining: Used in histology and microscopy as a staining agent for biological tissues in laboratory settings.
• Wood Staining: Applied for coloring wood and wood-based products to achieve specific aesthetic effects.

Basic Information

Product Name	C.I.Acid Blue 76
CAS No.	12238-39-0
Molecular Formula	C₂₀H₁₃N₂NaO₅S
Molecular Weight	416.38 g/mol
Synonyms	Acid Blue 76; C.I. 62125; Acid Blue AR; Anthraquinone Blue AR; Sodium 1-amino-4-(phenylamino)anthraquinone-2-sulfonate; Acid Leather Blue AR; Telon Blue ARL; Suracid Blue AR; Dermacid Blue AR
EINECS	235-447-1

Quality Control

Our C.I.Acid Blue 76 is manufactured under a strict quality management system. Every batch is analyzed to confirm identity, purity, and conformance to standard specifications, including color strength and shade. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical parameters is provided with each shipment to ensure traceability and 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
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 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.