Chlorophosphonazo Ⅲ - chromogenic agent, used for Chlorophosphonazo III was used as a chromogenic agent along with PVC, during the determination of calcium via a disposable optical sensor. various applications , CAS No.1914-99-4

CAS: 1914-99-4 Cat. No.: C100307 Molecular Weight: 757.36 Beilstein Registry Number: 2934871 EC Number: 217-628-8
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GRADE & PURITY Chromogenic agent ? Chromogenic agent — reagent that produces color on reaction for detection/quantitation. Use in colorimetric assays to make analytes visible/measurable.
Synonyms
2,7-Naphthalenedisulfonic acid, 3,6-bis[(4-chloro-2-phosphonophenyl)azo]-4,5-dihydroxy- | SCHEMBL8649065 | CHLOROPHOSPHONAZOIII | EINECS 217-628-8 | 2,7-Naphthalenedisulfonic acid, 3,6-bis((4-chloro-2-phosphonophenyl)azo)-4,5-dihydroxy- | 3,6-bis((E)-(4-c
Storage
Store at 2-8°C
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
C100307-1g
5

$55.90

$68.90
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Why this grade

chromogenic agent Chromogenic agent 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 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Chlorophosphonazo III is a highly sensitive reagent and can be used for the spectrophotometric determination of zirconium, titanium, thorium and scandium. It also finds application as an extractant, along with 1-butanol as solvent, for determination of micromolar concentrations of Nd(III), Th(IV) and U(VI) in brine. Above all that, it has two long wavelength maxima, one at 620 nm and one at 680 nm

Specifications

Synonyms
2, 7-Naphthalenedisulfonic acid, 3, 6-bis[(4-chloro-2-phosphonophenyl)azo]-4, 5-dihydroxy- | SCHEMBL8649065 | CHLOROPHOSPHONAZOIII | EINECS 217-628-8 | 2, 7-Naphthalenedisulfonic acid, 3, 6-bis((4-chloro-2-phosphonophenyl)azo)-4, 5-dihydroxy- | 3, 6-bis((E)-(4-c
Specifications & Purity
chromogenic agent
Application
Chlorophosphonazo III was used as a chromogenic agent along with PVC, during the determination of calcium via a disposable optical sensor.
Storage
Store at 2-8°C
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Grade
Chromogenic agent
Names and Identifiers
Canonical SmilesC1=CC(=C(C=C1Cl)P(=O)(O)O)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)O)S(=O)(=O)O)N=NC4=C(C=C(C=C4)Cl)P(=O)(O)O)O)O
IUPAC Name3,6-bis[(4-chloro-2-phosphonophenyl)diazenyl]-4,5-dihydroxynaphthalene-2,7-disulfonic acid
InChIKeyLMBABJNSZGKTBA-UHFFFAOYSA-N
INCHI1S/C22H16Cl2N4O14P2S2/c23-10-1-3-12(14(7-10)43(31,32)33)25-27-19-16(45(37,38)39)5-9-6-17(46(40,41)42)20(22(30)18(9)21(19)29)28-26-13-4-2-11(24)8-15(13)44(34,35)36/h1-8,29-30H,(H2,31,32,33)(H2,34,35,36)(H,37,38,39)(H,40,41,42)
Isomeric SMILES C1=CC(=C(C=C1Cl)P(=O)(O)O)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)O)S(=O)(=O)O)N=NC4=C(C=C(C=C4)Cl)P(=O)(O)O)O)O
WGK Germany 3
Molecular Weight 757.36
Beilstein 2934871
Reaxy-Rn 2934871
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=2934871&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

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✅ 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  Naphthols and derivatives  1-sulfo,2-unsubstituted aromatic compounds  Chlorobenzenes  1-hydroxy-4-unsubstituted benzenoids  Aryl chlorides  Sulfonyls  Organosulfonic acids  Organic phosphonic acids  Azo compounds  Propargyl-type 1,3-dipolar organic compounds  Organopnictogen compounds  Organophosphorus compounds  Organooxygen compounds  Organochlorides  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic homopolycyclic compounds
Substituents 2-naphthalene sulfonate - 2-naphthalene sulfonic acid or derivatives - 1-naphthol - 1-sulfo,2-unsubstituted aromatic compound - Arylsulfonic acid or derivatives - 1-hydroxy-4-unsubstituted benzenoid - Halobenzene - Chlorobenzene - Monocyclic benzene moiety - Aryl halide - Aryl chloride - Sulfonyl - Organosulfonic acid - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Organophosphonic acid derivative - Organophosphonic acid - Azo compound - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organosulfur compound - Organophosphorus compound - Organooxygen compound - Organonitrogen compound - Organochloride - Organohalogen compound - 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.

6 results found

Lot NumberCertificate TypeDateItem
B2627523Certificate of AnalysisFeb 02, 2026 C100307
H2514235Certificate of AnalysisJul 30, 2025 C100307
F2503639Certificate of AnalysisApr 16, 2025 C100307
L2420966Certificate of AnalysisOct 15, 2024 C100307
I2114104Certificate of AnalysisJun 16, 2023 C100307
J1930133Certificate of AnalysisMay 09, 2023 C100307
Chemical and Physical Properties
SensitivityMoisture sensitive.
Molecular Weight757.400 g/mol
XLogP31.400
Hydrogen Bond Donor Count8
Hydrogen Bond Acceptor Count18
Rotatable Bond Count8
Exact Mass755.896 Da
Monoisotopic Mass755.896 Da
Topological Polar Surface Area330.000 Ų
Heavy Atom Count46
Formal Charge0
Complexity1380.000
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 Count1
Citations of This Product
References
1. Juan Li, Jin Wang, Wei Wang, Xuetong Zhang.  (2019)  Symbiotic Aerogel Fibers Made via In-Situ Gelation of Aramid Nanofibers with Polyamidoxime for Uranium Extraction.  MOLECULES,  24  (9): (1821).  [PMID:31083542] [10.3390/molecules24091821]
2. Jiayi Huang, Yi Hou, Tiancong Ma, Peisen Zhang, Yingying Li, Chunyan Liu, Boyuan Zhang, Shanshan Qiu, Jianfeng Zeng, Mingyuan Gao.  (2018)  A Novel Histochemical Staining Approach for Rare-Earth-Based Nanoprobes.  Advanced Therapeutics,  (1): (1800005).  [PMID:] [10.1002/adtp.201800005]
Solution Calculators
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