Description

2',4',5',7'-Tetrabromo-3,4,5,6-Tetrachlorofluorescein is a halogenated derivative of fluorescein, known for its intense color and specific reactivity. This compound is valued as a critical intermediate and colorant precursor in the synthesis of high-performance dyes and pigments. It is primarily required by manufacturers in the specialty chemicals, analytical reagent, and research sectors for developing products with tailored optical properties.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing brominated and chlorinated xanthene dyes, including eosin and phloxine derivatives.
• Biological Staining: Used in the preparation of histological stains for microscopy in life science research.
• Analytical Chemistry: Employed as a reagent or indicator in specific photometric and fluorometric analytical methods.
• Laser Dye Precursor: Serves as a starting material for dyes used in tunable dye lasers and other photonic applications.
• Industrial Colorants: Imparts color in specialized inks, coatings, and plastics where halogenated structures are required for stability.
• Chemical Research: Utilized in organic synthesis and as a model compound in photochemistry studies due to its distinct structure.

Basic Information

Product Name	2',4',5',7'-Tetrabromo-3,4,5,6-Tetrachlorofluorescein
CAS No.	2134-15-8
Molecular Formula	C20H4Br4Cl4O5
Molecular Weight	785.66 g/mol
Synonyms	Phloxine B; D&C Red No. 28; Acid Red 92; C.I. 45410; Eosin Y Scarlet; 2',4',5',7'-Tetrabromo-4,5,6,7-tetrachlorofluorescein; Tetrabromotetrachlorofluorescein; Bromoeosin
EINECS	218-383-8

Quality Control

Our 2',4',5',7'-Tetrabromo-3,4,5,6-Tetrachlorofluorescein is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and UV-Vis spectroscopy. A Certificate of Analysis (COA) detailing purity, heavy metal content, and other relevant parameters is provided to ensure it meets your specific application requirements.

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. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
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.