Description

Bismarck Brown R is a synthetic cationic azo dye belonging to the diazo class, known for its distinctive brown color. This compound is valued for its strong affinity to various substrates, particularly proteinaceous and polyanionic materials, making it a versatile staining agent. It is primarily utilized in the biological and textile industries for specialized staining protocols and dyeing applications. Our supply of Bismarck Brown R CAS NO 8005-78-5 ensures consistent quality and reliable performance for industrial and research needs.

Application

• Biological Staining: Used as a vital stain in microbiology and histology, particularly for staining cartilage, mucin, and mast cell granules in tissue sections.
• Textile Dyeing: Employed in dyeing leather, silk, wool, and other natural fibers to achieve brown shades.
• Paper Coloring: Applied in the manufacture of specialty papers, including colored paper and paper products.
• Ink Formulation: Serves as a colorant in the production of writing inks, stamp pad inks, and other dye-based inks.
• Microscopy: Utilized in specific cytological and histological staining procedures to differentiate tissue components.
• Educational & Research: Used in laboratory settings for teaching and experimental protocols involving staining techniques.

Basic Information

Product Name	Bismarck Brown R
CAS No.	8005-78-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Bismarck Brown Y; Basic Brown 1; C.I. 21000; Vesuvin; Phenylene brown; Manchester brown; Leather Brown; Basic Brown G
EINECS	Contact for details

Quality Control

Our Bismarck Brown R is produced and tested under a rigorous quality management system to ensure batch-to-batch consistency and performance. While specific pharmacopeial monographs (e.g., USP, EP) may not be applicable, quality is assured through comprehensive analytical testing including identity confirmation, purity assessment, and strength verification. A Certificate of Analysis (COA) detailing specific test results is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials and sources of ignition.

Specification

Item	Specification
Appearance	Brown to dark brown powder or granules
Identification (IR)	Conforms to standard
Assay (Dye Content)	Min. 85%
Loss on Drying	Max. 5.0%
Ash Content	Max. 1.0%
Solubility	Soluble in water; sparingly soluble in ethanol

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