Fluorescein CAS 2321-07-5 Eosin 2- (6-Hydroxy-3-oxo-(3H)-xanthen-9-yl) Benzoic Acid

• CAS No.: 2321-07-5
• Formula: C20h12o5
• EINECS: 219-031-8
• Appearance: Powder
• Classification: S
• Certification: CCIC
• Model NO.: SUREST-96
• Purity: 90%~99%
• Type: Sodium Hydrosulfide
• Grade Standard: Industrial Grade
• Shelf Life: 2 Years
• Stock: Available
• Color: Aurantium
• Molecular Weight: 332.31
• Water Solubility: Insoluble
• Melting Point: 314-316 ºC
• Transport Package: 25kg or 200 Kg/Barrel
• Specification: 98%min
• Trademark: Surest
• Origin: China
• HS Code: 3204200000
• Production Capacity: 1000 Tons Yearly

Product Description

 Fluorescein

Name	Fluorescein
Synonyms	Eosin; 2-(6-Hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoic acid
Molecular Structure
Molecular Formula	C20H12O5
Molecular Weight	332.31
CAS Registry Number	2321-07-5
EINECS	219-031-8

Properties

Melting point	314-316 ºC
Water solubility	insoluble

 
Chemical Property/Description
Appearance: orange or light yellowish red to red crystalline powder.


Main Uses:

1.Chemical and biological analysis. As an indicator and biological stain for chemical analysis, it is used to detect chemical parameters such as metal ions, pH, and the presence and activity of proteins, enzymes, and cell molecules. 

2.Medical and ophthalmic diagnosis. It is used in medical imaging to prepare fluorescent dyes to help detect and study biological tissues. In ophthalmic diagnosis, it is used to detect and assess the health of the cornea. 

3.Cosmetics and household products. Used as a colorant for cosmetics and cleaners, and as a fluorescent indicator in household products.

4. Fluorescent coatings and plastics. In textile, plastics, rubber and other industries for the preparation of fluorescent coatings and fluorescent plastics.

5.Fluorescent indicator. It is used to detect leaks, sources of pollution, etc., and as an end-point indicator in chemical analysis.

6. Fluorescence microscopy and flow cytometry. Used in cell imaging and flow cytometry analysis to detect and visualize the presence of markers or marker molecules.

7 Fluorescence photometer. In biochemical analysis, it is used to quantify live organisms or low levels of bacterial contamination.

8.Luciferase reaction. In biochemical research, after forming a complex with ATP, it binds to luciferase and is used to detect the presence and activity of proteins, enzymes and cell molecules.

9.Fluorescent lighting. In fluorescent lamps and white light, ultraviolet or blue light is converted to visible light, improving luminaires brightness and efficiency, and saving energy.

10.Gemology and mineralogy. It is used to identify and evaluate the quality of gemstones and minerals, as well as to detect the authenticity of artifacts and documents. Printing anti-counterfeiting technology.

11.It is used to make invisible ink, watermark, bar code, etc., to increase the security and identification of printed matter.