Skip to Content
Merck
CN

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

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

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

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

Naphthol Yellow S, analytical standard

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

SMILES string

[Na+].[Na+].[O-]c1c(cc([N+]([O-])=O)c2ccc(cc12)S([O-])(=O)=O)[N+]([O-])=O

InChI key

CTIQLGJVGNGFEW-UHFFFAOYSA-L

grade

analytical standard

assay

≥99.0% (HPLC)

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

Quality Level

100

Looking for similar products? Visit Product Comparison Guide

Related Categories

Application

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.
  • Embroideries designed by the famous 19th century French painter Emile Bernard.

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

General description

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

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.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Warning

hcodes

H317,H373

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)

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCL8498

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Identification and determination of 34 water-soluble synthetic dyes in foodstuff by high performance liquid chromatography-diode array detection-ion trap time-of-flight tandem mass spectrometry.
Li XQ, et al.
Food Chemistry, 182(9), 316-326 (2015)
High-performance liquid chromatography and non-destructive three-dimensional fluorescence analysis of early synthetic dyes.
van Bommel MR, et al.
Journal of Chromatography A, 1157(1-2), 260-272 (2007)
F A Bignone et al.
Bollettino della Societa italiana di biologia sperimentale, 57(9), 950-955 (1981-05-15)
In the present work we studied the reversibility of the binding reaction of Naphthol Yellow S to proteins using a Testing Automatic System Leitz. We presently think that the NY-S staining procedure, can be used as a reliable quantitative method
P Skehan et al.
In vitro cellular & developmental biology : journal of the Tissue Culture Association, 21(5), 288-290 (1985-05-01)
A rapid method has been developed for measuring the cellular protein content of mono- and multilayered anchorage cultures. Fixed or air dried cultures are stained for 30 min with 0.2% Naphthol Yellow S (NYS) dissolved in 1% acetic acid. Unbound
S Gutschmidt et al.
Histochemistry, 72(3), 467-479 (1981-01-01)
In order to quantify the amount of protein in the small intestinal brush border region at different villus sites, cryostat sections of adult rat jejunum were stained with Naphthol Yellow S, Dinitrofluorobenzene and Coomassie Brilliant Blue and the dye deposits
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service