Chemistry:Naphthol yellow S

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Naphthol yellow S[1]
Naphthol yellow S.png
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
EC Number
  • 212-690-2
UNII
Properties
C10H4N2Na2O8S
Molar mass 358.19 g·mol−1
Appearance yellow solid
Hazards
GHS pictograms GHS07: HarmfulGHS08: Health hazard
GHS Signal word Warning
H317, H373
P260, P261, P272, P280, P302+352, P314, P333+313, 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" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/2724063#section=Safety-and-Hazards. 
  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. doi:10.1021/ed100545v. Bibcode2011JChEd..88...24S.