Description

Acid Blue 93 is a synthetic, water-soluble triphenylmethane dye belonging to the acid dye class, known for its brilliant blue color and good affinity for protein-based fibers. This high-purity colorant is valued for its consistent tinctorial strength and excellent solubility, making it a reliable choice for demanding industrial applications. It is primarily utilized in the textile, leather, and specialty paper industries, as well as in biological staining protocols where precise color fidelity is required.

Application

• Textile Dyeing: Used for coloring wool, silk, and nylon fibers, providing vibrant blue shades with good wash fastness.
• Leather Finishing: Imparts a uniform blue color to leather goods in the tanning and finishing processes.
• Biological Staining: Serves as a vital stain in microbiology and histology, particularly for specific tissue and cellular components.
• Paper Coloring: Employed in the production of specialty papers, including decorative and security papers.
• Ink Formulation: A component in the manufacture of certain inks for writing, printing, and stamping.
• Research & Development: Used as a chemical intermediate or indicator in various laboratory and analytical chemistry applications.

Basic Information

Product Name	Acid Blue 93
CAS No.	28983-56-4
Molecular Formula	C37H27N3Na2O9S3
Molecular Weight	799.80 g/mol
Synonyms	Aniline Blue WS; Acid Blue 93; C.I. 42780; Cotton Blue; China Blue; Methyl Blue; Water Soluble Aniline Blue; Bleu Aniline WS; Triphenylmethane Blue; Acid Leather Blue 2G
EINECS	249-352-3

Quality Control

Our Acid Blue 93 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against stringent in-house specifications, which include parameters for color strength, solubility, and impurity profiles. A Certificate of Analysis (COA) detailing the results of these quality tests is provided with every shipment to guarantee compliance with your technical requirements.

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 and sources of heat.

Specification

Item	Specification
Appearance	Dark blue to blue-violet powder
Identification (IR)	Conforms to standard
Assay (Color Content)	Min. 85%
Solubility (in Water)	Complete, clear solution
Loss on Drying	Max. 5.0%
Ash Content (Sulfated)	Max. 15.0%
Heavy Metals (as Pb)	Max. 20 ppm

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