Dipotassium 2-Naphthol-6,8-disulfonate Hydrate - ≥98%(HPLC) , CAS No.842-18-2

CAS: 842-18-2 Cat. No.: D154546 Molecular Weight: 380.47(as Anhydrous) EC Number: 212-672-4

GRADE & PURITY ≥98%(HPLC)

Synonyms

H10951 | W-104122 | 7-Hydroxy-1,3-Naphthalenedisulfonic acid potassium salt (1:2); 1,3-Naphthalenedisulfonic acid, 7-hydroxy-, dipotassium salt (8CI,9CI); 2-Naphthol-6,8-disulfonic acid dipotassium salt; Dipotassium 2-naphthol-6,8-disulfonate | 1,3-Naphth

Storage

Room temperature

Shipped In

Normal

Specifications

Synonyms

H10951 | W-104122 | 7-Hydroxy-1, 3-Naphthalenedisulfonic acid potassium salt (1:2); 1, 3-Naphthalenedisulfonic acid, 7-hydroxy-, dipotassium salt (8CI, 9CI); 2-Naphthol-6, 8-disulfonic acid dipotassium salt; Dipotassium 2-naphthol-6, 8-disulfonate | 1, 3-Naphth

Specifications & Purity

≥98%(HPLC)

Storage

Room temperature

Shipped In

Normal

Purity

≥98%(HPLC)

Names and Identifiers

• Pubchem Sid: 504754481
• Pubchem Sid Url: https://pubchem.ncbi.nlm.nih.gov/substance/504754481
• Canonical Smiles: C1=CC(=CC2=C(C=C(C=C21)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[K+].[K+]
• IUPAC Name: dipotassium;7-hydroxynaphthalene-1,3-disulfonate
• InChIKey: LKDMVWRBMGEEGR-UHFFFAOYSA-L
• INCHI: 1S/C10H8O7S2.2K/c11-7-2-1-6-3-8(18(12,13)14)5-10(9(6)4-7)19(15,16)17;;/h1-5,11H,(H,12,13,14)(H,15,16,17);;/q;2*+1/p-2
• Isomeric SMILES: C1=CC(=CC2=C(C=C(C=C21)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[K+].[K+]
• Molecular Weight: 380.47(as Anhydrous)
• Reaxy-Rn: 4079893
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=4079893&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Benzenoids
    • Class Naphthalenes
      • Subclass Naphthalene sulfonic acids and derivatives
        • Level5 Naphthalene sulfonates
          • Level6 2-naphthalene sulfonates

• 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 1-naphthalene sulfonic acids and derivatives 1-naphthalene sulfonates Naphthols and derivatives 1-sulfo,2-unsubstituted aromatic compounds 1-hydroxy-2-unsubstituted benzenoids Sulfonyls Organosulfonic acids Organooxygen compounds Organic potassium salts Organic oxides Hydrocarbon derivatives
• Molecular Framework: Aromatic homopolycyclic compounds
• Substituents: 1-naphthalene sulfonic acid or derivatives - 2-naphthalene sulfonic acid or derivatives - 1-naphthalene sulfonate - 2-naphthalene sulfonate - 2-naphthol - Arylsulfonic acid or derivatives - 1-sulfo,2-unsubstituted aromatic compound - 1-hydroxy-2-unsubstituted benzenoid - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Organic alkali metal salt - Organooxygen compound - Organic oxide - Organic oxygen compound - Organosulfur compound - Hydrocarbon derivative - Organic potassium salt - Organic salt - 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.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Molecular Weight: 380.500 g/mol
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 7
• Rotatable Bond Count: 0
• Exact Mass: 379.883 Da
• Monoisotopic Mass: 379.883 Da
• Topological Polar Surface Area: 151.000 Ų
• Heavy Atom Count: 21
• Formal Charge: 0
• Complexity: 501.000
• 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

XLogP3

References

1. Yufeng Liang, Ziqiang Liu, Kejing Lin, Weimin Yin, Yuanqin Zhu.  (2025)  High‐performance poly(m-terphenyl fluorenyl)s containing long flexible side chains with dual 1,2,3-triazole and disulfonated units for proton exchange membranes.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2025.123691]