Description

Oxamine Blue 4R is a synthetic organic dye belonging to the oxazine class, identified by CAS No. 2429-72-3. This compound is valued for its intense blue coloration and specific affinity for various substrates, making it a critical component in high-performance staining and coloring applications. It is primarily utilized by manufacturers in the textile, biological staining, and specialty ink industries where consistent color quality and chemical stability are paramount.

Application

• Textile Dyeing: Used as a colorant for synthetic and natural fibers, providing vibrant blue shades with good fastness properties.
• Biological Staining: Employed in microscopy and histology for staining cellular and tissue components to enhance contrast and visibility.
• Ink Manufacturing: Serves as a key pigment in the production of specialty inks for security printing, packaging, and artistic applications.
• Paper Coloring: Applied in the surface treatment and coating of paper products to achieve specific color requirements.
• Leather Finishing: Used in dyeing processes for leather goods to impart durable and uniform blue coloration.
• Research & Development: Acts as a chemical intermediate or reference standard in analytical chemistry and material science research.

Basic Information

Product Name	Oxamine Blue 4R
CAS No.	2429-72-3
Molecular Formula	C20H19N3O5S
Molecular Weight	413.45 g/mol
Synonyms	Acid Blue 92; C.I. 13390; Erioglaucine A; Wool Blue FFR; Lissamine Blue B; Acid Leather Blue A2R; Aizen Acid Pure Blue FFRH
EINECS	219-379-9

Quality Control

Our Oxamine Blue 4R is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including identity confirmation, purity assay, and impurity profiling, to ensure it meets precise specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with customer requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Dark blue to blue-black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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