Description

Azocarmine B is a synthetic azo dye belonging to the carmine dye family, valued for its specific staining properties in biological and histological applications. Its consistent performance and defined chemical structure make it a reliable choice for precise laboratory work. This product is essential for research institutions, diagnostic laboratories, and manufacturers of biological stains seeking high-quality, standardized reagents.

Application

• Histological Staining: Used as a specific stain for connective tissue, cartilage, and mucin in biological sample preparation for microscopic examination.
• Cytological Studies: Employed in the differential staining of cell structures to aid in cellular analysis and pathology.
• Biological Indicator: Functions as a pH indicator or a colorimetric reagent in certain biochemical assays and test kits.
• Textile Dyeing (Research Grade): Serves as a model compound or specialty dye in research and development for textile colorants.
• Ink Formulation (Specialty): Used in the formulation of specialized inks for technical or artistic purposes requiring its specific hue.
• Educational & Research: A standard reagent in academic and industrial research laboratories for teaching and experimental protocols involving azo dyes.

Basic Information

Product Name	Azocarmine B
CAS No.	25360-72-9
Molecular Formula	C27H29N3Na2O9S3
Molecular Weight	697.70 g/mol
Synonyms	Acid Red 103; C.I. 50085; Azokarmin B; Azocarmine BN; Azocarmine, water soluble; Azocarmine B, sodium salt; 4,4'-(1-Triazene-1,3-diyl)bis[5-amino-2,7-naphthalenedisulfonic acid] disodium salt
EINECS	246-902-7

Quality Control

Our Azocarmine B is produced and tested to meet high-purity standards suitable for laboratory and research applications. Each batch is subjected to rigorous analytical testing to ensure identity, strength, and purity. A comprehensive Certificate of Analysis (COA) detailing specific test results is provided to guarantee traceability and compliance with your quality requirements.

Storage

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

Specification

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

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