Naphthol yellow S

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

CAS Number

* 846-70-8 Y

3D model (JSmol)

* Interactive image

Beilstein Reference

| 3839220
ChEBI |

* CHEBI:87219 Y

ChemSpider |

* 2006234

EC Number |

* 212-690-2

PubChem CID

* 2724063

UNII |

* 08F8S9O3I5 Y

InChI

* 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

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
Appearance  | yellow solid
Hazards
GHS pictograms |
GHS Signal word | Warning

GHS hazard statements

| H317, H373

GHS precautionary statements

| 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).

N verify (what is YN ?)
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. Bibcode: 2011JChEd..88...24S.

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*[CID]: Compound ID
*[H317]: May cause an allergic skin reaction
*[H373]: May cause damage to organs through prolonged or repeated exposure
*[P260]: Do not breathe dust/fume/gas/mist/vapours/spray
*[P261]: Avoid breathing dust/fume/gas/mist/vapours/spray
*[P272]: Contaminated work clothing should not be allowed out of the workplace
*[P280]: Wear protective gloves/protective clothing/eye protection/face protection
*[P302+352]: IF ON SKIN: Wash with soap and water
*[P314]: Get Medical advice/attention if you feel unwell
*[P333+313]: If skin irritation or a rash occurs: Get medical advice/attention
*[P363]: Wash contaminated clothing before reuse
*[P501]: Dispose of contents/container to …