Sulfanilic acid azochromotrop - AR , CAS No.23647-14-5

CAS: 23647-14-5 Cat. No.: S121928 Molecular Weight: 570.41 EC Number: 245-803-9 PubChem CID: 90221
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GRADE & PURITY AR ? Analytical Reagent grade — high-purity chemicals meeting strict assay limits for lab analysis. Use when accuracy matters and trace impurities could skew results.
Synonyms
SPADNS ACS grade | 8C9EXU0M2M | 5-(3-Chlorophenyl)-N-(4-(morpholinomethyl)-phenyl)furan-2-carboxamide | 2-(4-Sulfophenylazo)chromotropic acid trisodium salt | trisodium;4,5-dihydroxy-3-[(4-sulfonatophenyl)diazenyl]naphthalene-2,7-disulfonate | EINECS 245-
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5g
S121928-5g
9
$25.90
25g
S121928-25g
5
$68.90
Enter a quantity for the sizes you want to add.
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Why this grade

AR AR for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships Normal 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 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Used as an indicator for complexometric determinations of zirconium and thorium

Specifications

Synonyms
SPADNS ACS grade | 8C9EXU0M2M | 5-(3-Chlorophenyl)-N-(4-(morpholinomethyl)-phenyl)furan-2-carboxamide | 2-(4-Sulfophenylazo)chromotropic acid trisodium salt | trisodium;4, 5-dihydroxy-3-[(4-sulfonatophenyl)diazenyl]naphthalene-2, 7-disulfonate | EINECS 245-
Specifications & Purity
AR
Storage
Room temperature
Shipped In
Normal
Grade
AR
Names and Identifiers
Pubchem Sid488186601
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488186601
Canonical SmilesC1=CC(=CC=C1N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])O)O)S(=O)(=O)[O-].[Na+].[Na+].[Na+]
IUPAC Nametrisodium;4,5-dihydroxy-3-[(4-sulfonatophenyl)diazenyl]naphthalene-2,7-disulfonate
InChIKeyAEHGQXKBQBMQEK-UHFFFAOYSA-K
INCHI1S/C16H12N2O11S3.3Na/c19-12-7-11(31(24,25)26)5-8-6-13(32(27,28)29)15(16(20)14(8)12)18-17-9-1-3-10(4-2-9)30(21,22)23;;;/h1-7,19-20H,(H,21,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3
Isomeric SMILES C1=CC(=CC=C1N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])O)O)S(=O)(=O)[O-].[Na+].[Na+].[Na+]
WGK Germany 3
PubChem CID 90221
Molecular Weight 570.41

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.

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassBenzenoids
ClassNaphthalenes
SubclassNaphthalene sulfonic acids and derivatives
Intermediate Tree Nodes Naphthalene sulfonates
Direct Parent2-naphthalene sulfonates
Alternative Parents 2-naphthalene sulfonic acids and derivatives  Benzenesulfonic acids and derivatives  Benzenesulfonyl compounds  1-sulfo,2-unsubstituted aromatic compounds  Phenoxides  Sulfonyls  Organosulfonic acids  Azo compounds  Propargyl-type 1,3-dipolar organic compounds  Organooxygen compounds  Organic sodium salts  Organic oxides  Hydrocarbon derivatives  Organic cations  
Molecular FrameworkAromatic homopolycyclic compounds
Substituents 2-naphthalene sulfonate - 2-naphthalene sulfonic acid or derivatives - Benzenesulfonate - Arylsulfonic acid or derivatives - Benzenesulfonyl group - 1-sulfo,2-unsubstituted aromatic compound - Phenoxide - Monocyclic benzene moiety - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Azo compound - Organic alkali metal salt - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Organic nitrogen compound - Organic oxygen compound - Organic salt - Organic sodium salt - Hydrocarbon derivative - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic oxide - Organic cation - Aromatic homopolycyclic compound
DescriptionThis 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
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

4 results found

Lot NumberCertificate TypeDateItem
L2116104Certificate of AnalysisSep 17, 2025 S121928
L2116105Certificate of AnalysisSep 16, 2025 S121928
A1519022Certificate of AnalysisSep 20, 2022 S121928
D23261085Certificate of AnalysisDec 20, 2021 S121928
Chemical and Physical Properties
Solubility Soluble in water (10 mg/ml), and ethanol (1 mg/ml). very slightly soluble or insoluble in alcohol and organic solvents
Melt Point(°C)>300°C
Molecular Weight570.400 g/mol
XLogP3
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count13
Rotatable Bond Count2
Exact Mass569.906 Da
Monoisotopic Mass569.906 Da
Topological Polar Surface Area262.000 Ų
Heavy Atom Count35
Formal Charge0
Complexity979.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count4
Citations of This Product
References
1. Yan Xiong, Jiayi Wu, Qing Wang, Jing Xu, Shenwen Fang, Jie Chen, Ming Duan.  (2017)  Optical sensor for fluoride determination in tea sample based on evanescent-wave interaction and fiber-optic integration.  TALANTA,      [PMID:28738594] [10.1016/j.talanta.2017.06.024]
Solution Calculators
Reviews

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