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

ECHA InfoCard | 100.011.537
EC Number |

* 212-690-2

PubChem CID

* 2724063

UNII |

* 08F8S9O3I5 Y

CompTox Dashboard (EPA)

* DTXSID1041718

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 labelling:[2]

Pictograms

Signal word

| Warning

Hazard statements

| H317, H373

Precautionary statements

| 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).

N verify (what is YN ?)

Infobox references

Chemical compound

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[edit]

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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*[CID]: Compound ID
*[EPA]: U.S. Environmental Protection Agency
*[H317]: H317: May cause an allergic skin reaction
*[H373]: H373: May cause damage to organs through prolonged or repeated exposure
*[P260]: P260: Do not breathe dust/fume/gas/mist/vapours/spray.
*[P261]: P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
*[P272]: P272: Contaminated work clothing should not be allowed out of the workplace.
*[P280]: P280: Wear protective gloves/protective clothing/eye protection/face protection.
*[P302+P352]: P302+P352: IF ON SKIN: Wash with soap and water.
*[P314]: P314: Get Medical advice/attention if you feel unwell.
*[P333+P313]: P333+P313: If skin irritation or a rash occurs: Get medical advice/attention.
*[P363]: P363: Wash contaminated clothing before reuse.
*[P501]: P501: Dispose of contents/container to ...
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