Epoxy curing agent Knowledge Sodium fluorescein

Sodium fluorescein

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Sodium fluorescein structural formula

Structural formula

Business number 05C4
Molecular formula C20H10Na2O5
Molecular weight 376.27
label

Acid Yellow 73,

Fluorescein sodium salt,

Fluorescent dyes

Numbering system

CAS number:518-47-8

MDL number:MFCD00167039

EINECS number:208-253-0

RTECS number:LM5425000

BRN number:3833041

PubChem ID:None

Physical property data

1. Characteristics: Undetermined

2. Density (g/ cm3, 25/4℃): 1.601

3. Relative steam Density (g/cm3, air=1): Undetermined

4. Melting point (ºC): 320

5. Boiling point (ºC, normal Pressure): Undetermined

6. Boiling point (ºC, 8kPa): Undetermined

7. Refractive index: Undetermined

8. Flash point (ºC ): Undetermined

9. Specific optical rotation (º): Undetermined

10. Autoignition point or ignition temperature (ºC): Undetermined

11. Vapor pressure (kPa, 25ºC): Not determined

12. Saturation vapor pressure (kPa, 60ºC): Not determined

13. Heat of combustion (KJ/mol): Not determined Determined

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Oil and water (octanol/water ) Log value of distribution coefficient: Undetermined

17. Explosion upper limit (%, V/V): Undetermined

18. Explosion lower limit (%, V/V): Undetermined Confirm

19. Solubility: Soluble in water and ethanol, with strong green fluorescence and good water solubility.

Toxicological data

None yet

Ecological data

This substance may be harmful to the environment, and special attention should be paid to water bodies.

Molecular structure data

None yet

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 5

4. Number of rotatable chemical bonds: 1

5. Number of tautomers: none

6. Topological molecule polar surface area 89.5

7. Number of heavy atoms: 27

8. Surface charge: 0

9. Complexity: 644

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 3

Properties and stability

It turns yellow with weak fluorescence when exposed to concentrated sulfuric acid.It dilutes to a yellow precipitate, and its aqueous solution becomes a dark solution with dark green fluorescence after adding sodium hydroxide.

Storage method

Should be sealed and stored in a cool, dry place.

Use and store according to specifications, no decomposition will occur, and avoid contact with oxides

Synthesis method

None yet

Purpose

Uses the same as fluorescein.

Resource:allhdi.com

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