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HomeProduct name listCI 45350

CI 45350

  • CAS NO.:518-45-6
  • Empirical Formula: C20H12O5
  • Molecular Weight: 332.30628
  • MDL number: MFCD00005050
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-03-28 17:11:29
CI 45350 Structural

What is CI 45350?

Preparation

Resorcinol and Phthalic anhydride alone or in the presence of sulfuric acid Zinc chloride or condensation, namely for fluorescein, again into free acid.

Definition

ChEBI: Fluorescein (acid form) is a xanthene dye that is highly fluorescent and commonly used as a fluorescent tracer. It has a role as a radioopaque medium and a fluorescent dye. It is a xanthene dye, a member of benzoic acids, a hydroxy monocarboxylic acid, a cyclic ketone, a member of phenols and an organic heterotricyclic compound.

Properties and Applications

yellow. Soluble in water and ethanol as yellow, with strong green fluorescence. In concentrated sulfuric acid to yellow, with weak fluorescence, dilution after yellow, with yellow precipitation. Dye aqueous solution to join sodium hydroxide color dark, with dark green fluorescence. The dye for C.I. Acid Yellow 73 free Acid. Used in cosmetics coloring.

Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Poor Insoluble General No change

Safety information for CI 45350

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