*** Welcome to piglix ***

Naphthol yellow S

Naphthol yellow S
Naphthol yellow S.png
Names
IUPAC name
Disodium 5,7-dinitro-8-oxidonaphthalene-2-sulfonate
Other names
Acid Yellow 1; Food Yellow 1; Sodium flavianate; Flavianic acid, sodium salt; C.I. 10316, Acid Yellow S, Amacid Yellow S, C.I. 10316, C.I. Acid Yellow 1, C.I. Food Yellow 1
Identifiers
3D model (JSmol)
ChEBI
ECHA InfoCard 100.011.537
PubChem CID
Properties
C10H4N2Na2O8S
Molar mass 358.19 g·mol−1
Appearance yellow solid
Hazards
S-phrases (outdated) S22 S24/25
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YesYN ?)
Infobox references

Naphthol yellow S is an organic compound that is a dye. It is a derivative of 1-naphthol. At one time it was a popular food colorant but it was delisted in 1959 in the U.S.


...
Wikipedia

...