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· · COA & SDS available for every product · Same-day shipping on in-stock items Nitrazine yellow - indicator , CAS No.5423-07-4
GRADE & PURITY Indicator ? Indicator grade — characterized dye giving a defined color change at a known transition. Use to signal pH or titration endpoints visually. Synonyms
4U1WVN6KUX | SCHEMBL155287 | delta Paper, indicator | Q27260493 | SCHEMBL8380112 | AKOS015903448 | sodium (E)-3-((2,4-dinitrophenyl)diazenyl)-4-hydroxynaphthalene-2,7-disulfonate | Nitrazol Yellow | starbld0009631 | Nitrazine paper | Phenaphthazine
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Why this grade indicator Indicator for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.
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Quality documents SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
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Literature proof Cited in 5 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Overview Nitrazine Yellow is a pH indicator with a variety of applications.
Specifications Synonyms
4U1WVN6KUX | SCHEMBL155287 | delta Paper, indicator | Q27260493 | SCHEMBL8380112 | AKOS015903448 | sodium (E)-3-((2,4-dinitrophenyl)diazenyl)-4-hydroxynaphthalene-2,7-disulfonate | Nitrazol Yellow | starbld0009631 | Nitrazine paper | Phenaphthazine
Specifications & Purity
indicator
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Names and Identifiers Canonical Smiles
C1=CC(=C(C=C1[N+](=O)[O-])[N+](=O)[O-])N=NC2=C(C=C3C=C(C=CC3=C2O)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
IUPAC Name
disodium;3-[(2,4-dinitrophenyl)diazenyl]-4-hydroxynaphthalene-2,7-disulfonate
InChIKey
XBLIFEQTVVSTIM-UHFFFAOYSA-L
INCHI
1S/C16H10N4O11S2.2Na/c21-16-11-3-2-10(32(26,27)28)5-8(11)6-14(33(29,30)31)15(16)18-17-12-4-1-9(19(22)23)7-13(12)20(24)25;;/h1-7,21H,(H,26,27,28)(H,29,30,31);;/q;2*+1/p-2
Isomeric SMILES
C1=CC(=C(C=C1[N+](=O)[O-])[N+](=O)[O-])N=NC2=C(C=C3C=C(C=CC3=C2O)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=3888558&ln=
Documentation 📋 Safety Data Sheet (SDS) Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS → ✅ Certificate of Analysis (COA) Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA → 📊 Datasheet Quick-reference summary of product specifications and applications.
View datasheet → 🔬 Specification Sheet Full quality attributes and acceptance criteria for this grade.
View spec sheet →
Advanced Data Taxonomic Classification Kingdom Organic compounds Superclass Benzenoids Class Naphthalenes Subclass Naphthalene sulfonic acids and derivatives Intermediate Tree Nodes Naphthalene sulfonates Direct Parent 2-naphthalene sulfonates Alternative Parents 2-naphthalene sulfonic acids and derivatives Naphthols and derivatives 1-sulfo,2-unsubstituted aromatic compounds Nitrobenzenes Nitroaromatic compounds 1-hydroxy-4-unsubstituted benzenoids Sulfonyls Organosulfonic acids Azo compounds Propargyl-type 1,3-dipolar organic compounds Organic oxoazanium compounds Organooxygen compounds Hydrocarbon derivatives Organic oxides Organic sodium salts Organic cations Molecular Framework Aromatic homopolycyclic compounds Substituents 2-naphthalene sulfonic acid or derivatives - 2-naphthalene sulfonate - 1-naphthol - 1-sulfo,2-unsubstituted aromatic compound - Arylsulfonic acid or derivatives - Nitrobenzene - Nitroaromatic compound - 1-hydroxy-4-unsubstituted benzenoid - Phenol - Monocyclic benzene moiety - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Sulfonyl - Organosulfonic acid - Organic nitro compound - C-nitro compound - Azo compound - Organic alkali metal salt - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Allyl-type 1,3-dipolar organic compound - Organic oxoazanium - Organic nitrogen compound - Organic oxygen compound - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic salt - Organic sodium salt - Hydrocarbon derivative - Organic oxide - Organic cation - Aromatic homopolycyclic compound Description This compound belongs to the class of organic compounds known as 2-naphthalene sulfonates. These are organic aromatic compounds that contain a naphthalene moiety that carries a sulfonic acid group at the 2-position. Naphthalene is a bicyclic compound that is made up of two fused benzene ring. External Descriptors Not available Data sources 1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.
3D Structure Certificates（CoA,COO,BSE/TSE and Analysis Chart) Chemical and Physical Properties Solubility Soluble in water Sensitivity Moisture sensitive. Molecular Weight 542.400 g/mol XLogP3 Hydrogen Bond Donor Count 1 Hydrogen Bond Acceptor Count 13 Rotatable Bond Count 2 Exact Mass 541.943 Da Monoisotopic Mass 541.943 Da Topological Polar Surface Area 268.000 Ų Heavy Atom Count 35 Formal Charge 0 Complexity 969.000 Isotope Atom Count 0 Defined Atom Stereocenter Count 0 Undefined Atom Stereocenter Count 0 Defined Bond Stereocenter Count 0 Undefined Bond Stereocenter Count 0 The total count of all stereochemical bonds 0 Covalently-Bonded Unit Count 3
Documents & Articles Citations of This Product Solution Calculators Molarity Calculator Determine the necessary mass, volume, or concentration for preparing a solution.
Dilution Calculator Determine the dilution needed to prepare a stock solution.
Reconstitution Calculator Reviews Need help choosing the grade? Our grade selection guide covers purity, stabilizer status, and application suitability for all variants in our catalog.
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