Erythrosine

CAS Number
16423-68-0
EC Number
240-474-8
E Number
E127

What is Erythrosine?

Erythrosine (CAS 16423-68-0), also known as E127 and erythrosine sodium anhydrous, is a synthetic red dye derived from fluorone.

Where is Erythrosine used?

  • Food: colors maraschino cherries, candied fruits and certain confectionery
  • Pharmaceutical: tablet coatings and oral dosage forms for product identification
  • Printing inks and packaging: red and pink tones in water-based formulations
  • Textile and paper industries apply it as a dye for specialty coloring processes.

Good to know: One of the few certified red colorants approved for specific food uses in multiple regulatory markets.

Commercial specifications

  • Food-grade specifications certified to FCC and E127 standards

Other Names (Synonyms)

erythrosine sodium anhydrous|Disodium 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoate|E127|3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one|FD & C red no. 3|RefChem:591122|Fluorescein, 2′,4′,5′,7′-tetraiodo-, disodium salt|Erythrosine B

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What are the physical properties of Erythrosine?

Melting Point 693.2 °C
Density 0.98
Flash Point 285°C
Appearance red to brown powder
Color Deep red to brown
Form Fine Powder
Water Solubility Soluble in water
Vapor Pressure 0Pa at 25℃
pH 6-7 (10g/l, H2O, 20℃)
Log P -1.163 at 25℃

Which trade and regulatory codes apply to Erythrosine?

HS Code 32129000
UN Number 3077
WGK (Germany) 3
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