CI 45350

CI 45350 Structure
CAS No.
518-45-6
Chemical Name:
CI 45350
Synonyms
KI202(2);KI202(1);Fluoresceine 94;C.I.Solvent Yellow 94:C.I.45350:1;3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one;3',6'-dihydroxyspiro[isobenzofuran-3,9'-xanthene]-1-one
CBNumber:
CB4965895
Molecular Formula:
C20H12O5
Molecular Weight:
332.30628
MOL File:
518-45-6.mol
MSDS File:
SDS
Modify Date:
2024/3/28 17:11:29

CI 45350 Chemical Properties,Uses,Production

Preparation

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

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

CI 45350 Preparation Products And Raw materials

Raw materials

Preparation Products

CI 45350 Suppliers

KI202(1) KI202(2) Fluoresceine 94 3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one 3',6'-dihydroxyspiro[isobenzofuran-3,9'-xanthene]-1-one C.I.Solvent Yellow 94:C.I.45350:1 518-45-6