Description

Chicago Sky Blue 6B is a synthetic, water-soluble anionic dye belonging to the triarylmethane class, identified by CAS No. 2610-05-1. This vibrant blue colorant is valued for its strong tinctorial strength and stability in various aqueous applications. It serves as a critical component for industrial manufacturers and researchers requiring precise and reliable coloration. Key sectors that utilize this product include the biological staining, textile, ink, and specialty chemical industries.

Application

• Biological Staining: Primarily used as a vital stain in biomedical research and histology, notably for tracking neuronal pathways and assessing cell viability.
• Textile Dyeing: Employed for coloring protein-based fibers like wool and silk, as well as for paper and leather, due to its good affinity.
• Ink Manufacturing: Serves as a colorant in the formulation of writing inks, stamp pad inks, and other specialty liquid inks.
• Laboratory Reagent: Used as an indicator and tracer in various analytical and experimental protocols.
• Industrial Detergents & Cleaners: Incorporated to provide a distinctive blue hue to liquid and powder cleaning formulations.

Basic Information

Product Name	Chicago Sky Blue 6B
CAS No.	2610-05-1
Molecular Formula	C34H24N6Na4O16S4
Molecular Weight	992.81 g/mol
Synonyms	Direct Blue 1; Chicago Blue 6B; Pontamine Sky Blue 6BX; Cl Direct Blue 1; Cl 24410; Evans Blue (related compound); Sky Blue; Aniline Blue (variant); Acid Blue 1 (related compound)
EINECS	220-027-7

Quality Control

Our Chicago Sky Blue 6B is manufactured under a strict quality management system. Each batch is subjected to comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and color strength. We provide Certificates of Analysis (COA) with key parameters, and our quality protocols are designed to support applications requiring consistent performance, including research and industrial use.

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 the container sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Dark blue to blue-black powder
Identification (IR)	Conforms to standard
Assay (Color Strength)	Min. 95%
Loss on Drying	≤ 5.0%
Water Solubility	Freely soluble
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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