Description

Phloxin (CAS No. 20266-44-8) is a synthetic xanthene dye known for its vivid red color and specific chemical properties. This compound is valued for its utility as a biological stain and colorimetric indicator in various analytical and research protocols. It is primarily sought by professionals in the life sciences, histology, and industrial dye sectors for applications requiring precise colorimetric detection and staining.

Application

• Histological Staining: Used as a cytoplasmic stain in biological tissue samples for microscopic examination.
• Microbiological Research: Employed in viability assays and for staining specific cellular structures.
• Colorimetric Analysis: Acts as an indicator dye in various chemical and biochemical assays.
• Textile and Ink Dyeing: Serves as a colorant for specialized textile, ink, and pigment formulations.
• Food and Cosmetic Colorant (where approved): Potential use as a coloring agent in specific regulated applications.
• Educational and Laboratory Reagent: Used in academic and research laboratory settings for teaching and experimental procedures.

Basic Information

Product Name	Phloxin
CAS No.	20266-44-8
Molecular Formula	C20H2Br4Cl4Na2O5
Molecular Weight	829.64 g/mol
Synonyms	Phloxine B; Acid Red 92; D&C Red No. 28; CI 45410; 2',4',5',7'-Tetrabromo-4,5,6,7-tetrachlorofluorescein disodium salt; Bromo Acid Red; Eosin 10B
EINECS	243-681-4

Quality Control

Our Phloxin is produced and tested under a rigorous quality management system. Each batch is analyzed to ensure it meets stringent specifications for identity, purity, and color strength, typical of reagent-grade and dye-grade materials. A comprehensive Certificate of Analysis (COA) detailing assay results, impurity profiles, and physical properties is provided with every shipment to guarantee traceability and compliance.

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 incompatible materials. Due to its light-sensitive nature, minimize exposure to direct light during handling and storage.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 85.0% (Dye content)
Loss on Drying	≤ 5.0 %
Absorbance (λ max)	Conforms
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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