CI 77492 is a chemical compound, a synthetic dye and consists mainly of hydrated ferrous oxide
It is known as Pigment Yellow 11, Yellow Iron Oxide
It appears in the form of a yellow powder

Chemical name
iron(3+);oxygen(2-);hydroxide;hydrate
What it is used for and where
Cosmetics
Colorant. This ingredient has the primary 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.
Molecular Formula FeH3O3
CAS: 51274-00-1 1345-27-3 20344-49-4 52357-70-7
EC number 257-098-5 215-722-3 215-570-8 257-670-1
UNII EX438O2MRT
DTXSID2029371
Pigment Yellow 42