Fluorescein Disodium Salt CAS 518-47-8 Acid Yellow 73 Uranine

• CAS No.: 518-47-8
• Formula: C20h12o5.2na
• EINECS: 208-253-0
• Classification: Organic Analytical Reagents
• Grade: AR
• Specific Usage: For Synthesis
• Model NO.: SUREST-128
• Content: Standard
• Usage: Laboratory Reagents, Analytical Reagents, Diagnostic Reagents, Teaching Reagents
• Source: Dry Powder
• Habit Appellation: Special Reagent
• Application: Industry, Scientific Research, Health, Environmental Protection, Agriculture
• Property: Organic Reagent
• Shelf Life: 2 Years
• Stock: Available
• Molecular Weight: 376.27
• Color: Orange Red
• Melting Point: 320 ºC
• Water Solubility: 500 G/L (20 ºC)
• Transport Package: 25kg /Drum
• Specification: 98%min
• Trademark: Surest
• Origin: China
• HS Code: 2934200021
• Production Capacity: 1000 Tons Yearly

Product Description

Fluorescein disodium salt

Name	Fluorescein disodium salt
Synonyms	Acid Yellow 73; C.I. 45350; Disodium 2-(3-oxo-6-oxidoxanthen-9-yl)benzoate; Uranine
Molecular Structure
Molecular Formula	C20H12O5^.2Na
Molecular Weight	376.27
CAS Registry Number	518-47-8
EINECS	208-253-0

Properties

Melting point	320 ºC
Water solubility	500 g/L (20 ºC)

Chemical Property/Description

Fluorescein disodium salt is a white orange red powder, soluble in water and alcohol solvents, slightly soluble in ether. It is yellow under acidic conditions and green fluorescent under alkaline conditions. Its melting point is about 320 ° C.

Main Uses:
Fluorescein disodium salt has been widely used in chemical analysis, biomedicine, fluorescence microscopy and chemiluminescence. It is usually used as a biochemical reagent in experiments to determine enzyme activity, protein content and cell activity. Sodium fluorescein can also be used to prepare other fluorescent dyes, such as fluorescein phosphate.
 

Fluorescein disodium salt can also be used in cell biology research and molecular biology research. Researchers typically use sodium fluorescein as a substrate to detect the expression and localization of proteins or other biomolecules. This approach could help scientists better understand the fundamental processes of life and provide a basis for developing new treatments.