Cas no 1738-02-9 (2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazenyl]-)

2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazenyl]- structure
1738-02-9 structure
Product Name:2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazenyl]-
CAS No:1738-02-9
MF:C22H16N4O14S4
MW:688.640840530396
CID:184753
PubChem ID:135414815
Update Time:2025-04-19

2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazenyl]- Chemical and Physical Properties

Names and Identifiers

    • 2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazenyl]-
    • (3Z,6E)-4,5-dioxo-3,6-bis[(2-sulfophenyl)hydrazinylidene]naphthalene-2,7-disulfonic acid
    • SULFONAZO III TITRATION INDICATOR FOR SO4
    • 2,7-Bis-(o-sulfophenylazo)-chromotropsaeure
    • 3,6-bis(o-sulfophenylazo)-4,5-dihydroxynaphthalene-2,7-disulfonic acid
    • 3,6-Bis(o-sulphophenylazo)-4,5-dihydroxynaphthalene-2,7-disulphonic acid
    • 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazen-1-yl]naphthalene-2,7-disulfonic acid
    • EINECS 217-089-9
    • 7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3,6-bis[(2-sulfophenyl)azo]-2
    • sulfonazo iii tetrasodium salt
    • 2,7-Naphthalenedisulfonic acid,4,5-dihydroxy-3,6-bis[(2-sulfophenyl)azo]-
    • SULFONAZO 3
    • Orthanilic S
    • SULFONAZO III
    • SULFONAZO III SODIUM
    • Sulfonazo III【Dotite】
    • SulphonazoIiiTetrasodiumSaltA.R.
    • Sulfonazo(III)tetrasodiumsaltA.R.
    • 2,7-BIS(O-SULFOPHENYLAZO)-CHROMOTROPIC ACID, NA
    • 3,6-BIS(O-SULFOPHENYLAZO)-4,5-DIHYDROXY-2,7-NAPHTHALENEDISULFONIC ACID
    • LABOTEST-BB LT00847610
    • 4,5-dihydroxy-3,6-bis[(2-sulfophenyl)diazenyl]naphthalene-2,7-disulfonic acid
    • NSC 174066
    • SCHEMBL1472399
    • AKOS024375438
    • NS00093554
    • 1738-02-9
    • NSC174066
    • DTXSID101317580
    • 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazenyl]-
    • NSC-174066
    • 3,6-bis(2-Sulfophenylazo)-4,5-dihydroxy-2,7-naphthalenedisulfonic acid, tetrasodium salt
    • 4,5-dihydroxy-3,6-bis[(2-sulfophenyl)azo]naphthalene-2,7-disulfonic acid
    • 2,7-Bis(o-sulfophenylazo)-chromotropic acid,na
    • Inchi： 1S/C22H16N4O14S4/c27-21-18-11(9-16(43(35,36)37)19(21)25-23-12-5-1-3-7-14(12)41(29,30)31)10-17(44(38,39)40)20(22(18)28)26-24-13-6-2-4-8-15(13)42(32,33)34/h1-10,27-28H,(H,29,30,31)(H,32,33,34)(H,35,36,37)(H,38,39,40)/b25-23+,26-24+
    • InChI Key： ILROUJLNAZOVJV-OGGGYYITSA-N
    • SMILES： S(C1C(=C(C2C(=C(C(=CC=2C=1)S(=O)(=O)O)/N=N/C1C=CC=CC=1S(=O)(=O)O)O)O)/N=N/C1C=CC=CC=1S(=O)(=O)O)(=O)(=O)O

Computed Properties

  • Exact Mass: 687.95500
  • Monoisotopic Mass: 687.955
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 6
  • Hydrogen Bond Acceptor Count: 18
  • Heavy Atom Count: 44
  • Rotatable Bond Count: 8
  • Complexity: 1720
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 2
  • Undefined Bond Stereocenter Count: 0
  • Topological Polar Surface Area: 334A^2
  • Surface Charge: 0
  • Tautomer Count: 17
  • XLogP3: 0.5

Experimental Properties

  • Color/Form: Brown powder
  • Density: g/cm3
  • Melting Point: 0.3℃
  • Boiling Point: °Cat760mmHg
  • Flash Point: °C
  • Stability/Shelf Life: Stable. Incompatible with strong oxidizing agents.
  • PSA: 340.90000
  • LogP: 8.39180

2,7-Naphthalenedisulfonicacid, 4,5-dihydroxy-3,6-bis[2-(2-sulfophenyl)diazenyl]- Security Information

  • WGK Germany：3
  • Safety Instruction： S22

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