Naphthol yellow S

Naphthol yellow S^[1]
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
Identifiers
CAS Number	846-70-8;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.011.537
PubChem CID	2724063;
CompTox Dashboard (EPA)	DTXSID1041718 ;
	SMILES C1=CC2=C(C=C1S(=O)(=O)[O-])C(=C(C=C2[N+](=O)[O-])[N+](=O)[O-])[O-].[Na+] .[Na+];
Properties
Chemical formula	C10H4N2Na2O8S
Molar mass	358.19 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Naphthol yellow S is a compound with formula Na₂(C₁₀H₄SN₂O₈). It is a dye.

References

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