Eosin is a chemical compound, a synthetic dye also known as Acid Red 87, CI 45380.
It contains a xanthene core that makes the colour fluorescent.
Chemical Name:
disodium;2-(2,4,5,7-tetrabromo-3-oxido-6-oxoxanthen-9-yl)benzoate
What it is used for and where
Cosmetics
Restricted cosmetic ingredient as IV/76 (CI 45380) II/1334 (Solvent Red 43), its disodium salt (Acid Red 87; CI 45380) and its aluminium salt (Pigment Red 90:1 Aluminium lake) a Relevant Item in the Annexes of the European Cosmetics Regulation 1223/2009. Substance or ingredient reported: Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
Cosmetics - INCI Functions
Colorant. This ingredient has the function of colouring the solution in which it is inserted in a temporary, semi-permanent or permanent manner, either alone or in the presence of the complementary components added for colouring.
Safety
Use in hair colouring products is prohibited.
![]() | ![]() |
Molecular Formula C20H6Br4Na2O5
Molecular Weight 691.9 g/mol
CAS 17372-87-1 548-26-5 15876-39-8 15086-94-9 94021-89-3
EC number 241-409-6 240-005-7 239-138-3 301-481-2
UNII TDQ283MPCW
DTXSID901015574
Synonyms:
CI 45380
Acid Red 87
Eosine G

