Description

Acid Blue 350 is a synthetic acid dye belonging to the anthraquinone chemical class, valued for its bright, stable blue hue and excellent wet fastness properties. It is a critical component for achieving high-quality, durable coloration in various industrial substrates. This dye is essential for manufacturers in the textile, leather, and specialty paper industries seeking reliable and consistent color performance. Acid Blue 350 CAS NO 138067-74-0 is known for its compatibility with protein fibers and polyamide materials.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers, providing excellent levelness and wash fastness.
• Leather Finishing: Used for coloring leather goods, offering rich color depth and good lightfastness.
• Paper Coloration: Employed in the production of specialty papers, including decorative and security papers.
• Ink Formulation: A component in the manufacture of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings.
• Polyamide Plastics: Can be used for mass coloration of polyamide plastics and resins.

Basic Information

Item	Detail
Product Name	Acid Blue 350
CAS No.	138067-74-0
Molecular Formula	C32H26N4Na2O8S2
Molecular Weight	696.68 g/mol
Synonyms	Acid Blue 350; C.I. 621352; Acid Blue AR; Lanasyn Blue S-RBL; Telon Blue ARL; Nylosan Blue N-5GL; Anthraquinone Blue Dye; Sodium 1-amino-4-[(4-((2,4-disulfophenyl)amino)phenyl)amino]-9,10-dihydro-9,10-dioxoanthracene-2-sulfonate
EINECS	Contact for details

Quality Control

Our Acid Blue 350 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous in-house specifications for critical parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing 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 incompatible materials. Due to its light-sensitive nature (store away from light), prolonged exposure to direct light should be avoided to maintain product integrity.

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
pH (1% Solution)	6.0 - 8.0
Ash Content	≤ 1.0%

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