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Fluorescein AR Grade Reagent

Cas Number:2321-07-5
Formula: C20H12O5
Molar Mass:332.31
EC Number:219-031-8

Quantity:
  • AR
  • LABOR
  • 401802125

Fluorescein AR Grade Reagent


Cas Number:2321-07-5

Formula: C20H12O5

Molar Mass:332.31

EC Number:219-031-8


Physicochemical properties:

Yellow-red to red powder. It is soluble in hot ethanol, glacial acetic acid, alkali carbonate and alkali hydroxide, and bright green fluorescence, insoluble in water, benzene, chloroform and ether. The melting point is 314 ~ 316 ° C (in the sealed tube, decomposition). The maximum absorption wavelength is 493.5 and 460 nm. The minimum lethal dose (rat, abdominal cavity) is 600 mg/kg.


Usage:

Adsorption indicator. Redox indicator. Fluorescence photometric analysis of sulfur ions. Chloride, bromine and iodine are titrated.


Packing:

500g/25kg





Symbol 

Signal word 

Warning

Hazard statement

H319

Precautionary statements—Prevention

P264


P280

Precautionary statements—Response

P305+P351+P338


P337+P313

UN No.

No Information



Item of Analysis

Standard

Solubility in ethanol

to pass test

Sensitivity test

to pass test

Residue on ignition(as SO4) ,%

0.3 max

Loss on drying,%

5.0 max


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