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

• Customization: Available
• CAS NO.: 2321-07-5
• Formula: C20h12o5
• Model NO.: SUREST-96
• EINECS: 219-031-8
• Colour: Red, Orange
• Appearance: Powder
• Usage: Ink, Plastic, Paint, Textile, Paper, Leather, Photoelectric Communication
• Application Material: Biological Staining Agent
• Type: Synthetic
• Composition: Fluorescein
• Solubility: Insolubility
• Name: Fluorescein
• Shelf Life: 2 Years
• Stock: Available
• Color: Aurantium
• Molecular Weight: 332.31
• Water Solubility: Insoluble
• Melting Point: 314-316 ºC
• Boiling Point: 429.44°c
• Refractive Index: 1.5000
• Density: 1.2739
• Transport Package: 25kg/Drum
• Specification: 98%min
• Trademark: Surest
• Origin: China
• HS Code: 3204200000
• Production Capacity: 1000 Tons Yearly

Product Description

Product Description

 

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.


 

Detailed Photos

 

FAQ

 

FAQ
Question 1: Can I get samples?
Answer: Yes,you can get free samples of our most products,
while the courier cost will be borne by the buyers.

Question 2: What's your MOQ?
Answer: For a express delivery order,the MOQ is usually 100 g~1 kg;
for an air transport order or sea delivery order ,the MOQ is usually 25 kgs.

Question 3: What's your delivery time?
Answer:
Orders shipped by express delivery,the delivery time is usually 5~7 working days;
Orders shipped by air transport,usually around 7~10 working days;
Orders shipped by sea , usually around 2~3 working weeks.

Question 4: What are the different payment methods?
Answer: We usually accept T/T, L/C and Western Union.

Question 5: How do you treat quality complaint?
We take quality very seriously, it is one of the founding principles of our business.
 If the quality problem actually exists, we will replace with qualified goods or refund the money.