49547

Naphthol Yellow S

analytical standard

• Synonym(s): 2,4-Dinitro-1-naphthol-7-sulfonic acid sodium salt, 5,7-Dinitro-8-hydroxy-2-naphthalenesulfonic acid sodium salt, Acid Yellow 1, Flavianic acid sodium salt
• Empirical Formula (Hill Notation): C₁₀H₄N₂Na₂O₈S
• CAS Number: 846-70-8
• Molecular Weight: 358.19
• EC Number: 212-690-2
• UNSPSC Code: 85151701
• NACRES: NA.24
• PubChem Substance ID: 329757474
• MDL number: MFCD00003958
• Colour Index Number: 10316
• Beilstein/REAXYS Number: 3839220

Properties

• grade: analytical standard
• Quality Segment: 100
• assay: ≥99.0% (HPLC)
• technique(s): HPLC: suitable, gas chromatography (GC): suitable
• application(s): cleaning products; cosmetics; food and beverages; personal care
• format: neat
• SMILES string: [Na+].[Na+].[O-]c1c(cc([N+]([O-])=O)c2ccc(cc12)S([O-])(=O)=O)[N+]([O-])=O
• 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
• InChI key: CTIQLGJVGNGFEW-UHFFFAOYSA-L

Description

General description

Naphthol Yellow S is a dye that is known for its hazardous nature.

Application

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Naphthol Yellow S may be used as an analytical reference standard for the determination of Naphthol Yellow S in:

• Foodstuffs by solid phase extraction (SPE) and high performance liquid chromatography (HPLC)-diode array detection (DAD)-ion trap time-of-flight tandem mass spectrometry (IT-TOF-MS³) equipped with multiple reaction monitoring (MRM) detection.
• Drinks and candies by SPE followed by analysis using HPLC coupled to photodiode array (PDA) detector.
• Wastewater samples by adsorption column chromatography.[1]
• Embroideries designed by the famous 19th century French painter Emile Bernard.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Safety Information

• pictograms: GHS08,GHS07
• signalword: Warning
• hcodes: H317,H373
• pcodes: P260 - P272 - P280 - P302 + P352 - P314 - P333 + P313
• Hazard Classifications: Skin Sens. 1 - STOT RE 2
• Storage Class: 11 - Combustible Solids
• wgk: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)