Naphthol yellow S[1]
Names
Preferred 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)
3839220
ChEBI
ChemSpider
ECHA InfoCard 100.011.537
EC Number
  • 212-690-2
UNII
  • InChI=1S/C10H6N2O8S.2Na/c13-10-7-3-5(21(18,19)20)1-2-6(7)8(11(14)15)4-9(10)12(16)17;;/h1-4,13H,(H,18,19,20);;/q;2*+1/p-2
    Key: CTIQLGJVGNGFEW-UHFFFAOYSA-L
  • C1=CC2=C(C=C1S(=O)(=O)[O-])C(=C(C=C2[N+](=O)[O-])[N+](=O)[O-])[O-].[Na+].[Na+]
Properties
C10H4N2Na2O8S
Molar mass 358.19 g·mol−1
Appearance yellow solid
Hazards
GHS labelling:[2]
GHS07: Exclamation markGHS08: Health hazard
Warning
H317, H373
P260, P261, P272, P280, P302+P352, P314, P333+P313, P363, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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.[3]

References

  1. ↑ Naphthol Yellow S at Sigma-Aldrich
  2. ↑ "Naphthol Yellow S". pubchem.ncbi.nlm.nih.gov.
  3. ↑ Sharma, Vinita; McKone, Harold T.; Markow, Peter G. (2011). "A Global Perspective on the History, Use, and Identification of Synthetic Food Dyes". Journal of Chemical Education. 88 (1): 24–28. Bibcode:2011JChEd..88...24S. doi:10.1021/ed100545v.
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