Product Name

  • Name

    Sodium 2-naphthol-7-sulfonate

  • EINECS 205-200-3
  • CAS No. 135-55-7
  • Density
  • Solubility
  • Melting Point 225°C (dec.)
  • Formula C10H7NaO4S
  • Boiling Point
  • Molecular Weight 246.21
  • Flash Point
  • Transport Information
  • Appearance
  • Safety 26-36/37/39
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 135-55-7 (Sodium 2-naphthol-7-sulfonate)
  • Hazard Symbols
  • Synonyms Sodium2-hydroxynaphthalene-7-sulfonate;Sodium7-hydroxy-2-naphthalenesulfonate;2-Naphthalenesulfonicacid, 7-hydroxy-, monosodium salt (8CI,9CI);2-Naphthol-7-sulfonic acid, sodiumsalt (6CI);2-Naphthol-7-sodium sulfonate;7-Hydroxynaphthalene-2-sulfonic acidsodium salt;7-Sulfo-2-naphthol sodium salt;
  • PSA 85.81000
  • LogP 2.53030

Sodium 2-naphthol-7-sulfonate Chemical Properties

Product Name: 2-Naphthalenesulfonicacid, 7-hydroxy-, sodium salt (1:1) (CAS NO.135-55-7)


Molecular Formula: C10H7NaO4S
Molecular Weight: 246.21g/mol
Mol File: 135-55-7.mol
EINECS: 205-200-3
H-Bond Donor: 1
H-Bond Acceptor: 4
Structure Descriptors of 2-Naphthalenesulfonicacid, 7-hydroxy-, sodium salt (1:1) (CAS NO.135-55-7):
  IUPAC Name: sodium 7-hydroxynaphthalene-2-sulfonate
  Canonical SMILES: C1=CC(=CC2=C1C=CC(=C2)S(=O)(=O)[O-])O.[Na+]
  InChI: InChI=1S/C10H8O4S.Na/c11-9-3-1-7-2-4-10(15(12,13)14)6-8(7)5-9;/h1-6,11H,(H,12,13,14);/q;+1/p-1 
  InChIKey: IVXSQYUPCUOMRV-UHFFFAOYSA-M
Product Categories: Intermediates of Dyes and Pigments

Sodium 2-naphthol-7-sulfonate Safety Profile

Safety Information of 2-Naphthalenesulfonicacid, 7-hydroxy-, sodium salt (1:1) (CAS NO.135-55-7):
Risk Statements: 36/37/38 
36:  Irritating to the eyes 
37:  Irritating to the respiratory system 
38:  Irritating to the skin
Safety Statements: 26-36/37/39
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36:  Wear suitable protective clothing  
37:  Wear suitable gloves 
39:  Wear eye/face protection

Sodium 2-naphthol-7-sulfonate Specification

 2-Naphthalenesulfonicacid, 7-hydroxy-, sodium salt (1:1) , its CAS NO. is 135-55-7, the synonyms are 2-Naphthalenesulfonic acid, 7-hydroxy-, monosodium salt ; Sodium 7-hydroxynaphthalene-2-sulphonate .

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