Description

Bismarck Brown Y is a synthetic cationic azo dye belonging to the diazo class, valued for its strong affinity to various substrates. Its primary commercial significance lies in its use as a versatile biological stain and a key intermediate in the synthesis of more complex dyes and pigments. This product is essential for manufacturers and research laboratories in the histology, textile, and specialty chemical industries seeking consistent, high-quality staining agents and dye precursors.

Application

• Biological Staining: Widely used in histology and microbiology for staining acid mucopolysaccharides, cartilage, and mast cell granules in tissue sections.
• Textile Dyeing: Serves as a direct dye for coloring cotton, silk, and wool, particularly where a specific brown shade is required.
• Leather Processing: Employed in the dyeing of leather goods to achieve durable and vibrant brown colors.
• Paper Coloring: Used in the production of specialty colored papers and cardstocks.
• Ink Formulation: Acts as a colorant in the manufacture of certain inks for industrial printing applications.
• Chemical Synthesis: Functions as a crucial intermediate or starting material in the synthesis of other azo dyes and organic compounds.
• Microscopy: Utilized as a contrast stain in various microscopic techniques to differentiate tissue structures.
• Educational & Research: A standard reagent in academic and industrial research laboratories for experimental protocols requiring specific staining properties.

Basic Information

Product Name	Bismarck Brown Y
CAS No.	1052-38-6
Molecular Formula	C18H18N8·2HCl
Molecular Weight	419.31 g/mol (as free base)
Synonyms	Basic Brown 1; C.I. 21000; Vesuvin; Bismarck Brown; Phenylene Brown; Manchester Brown; Basic Brown G; Diazol Brown; Azo Brown
EINECS	213-891-8

Quality Control

Our Bismarck Brown Y is produced under a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot is tested against rigorous in-house specifications, which typically include identity confirmation, purity assay, and assessment of key impurities. A Certificate of Analysis (COA) detailing these results is provided with every shipment to support your quality assurance and regulatory compliance needs.

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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (Dye Content)	Min. 85%
Loss on Drying	Max. 5.0%
Ash Content	Max. 1.0%
Solubility (Water)	Completely soluble, yielding a reddish-brown solution
pH (1% Solution)	3.0 - 5.0

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