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Substance Name: Eriochrome blue SE
RN: 1058-92-0
InChIKey: LNXMADNIUWFTPP-UHFFFAOYSA-L

Note

  • Indicator used to measure free magnesium in biological systems.

Molecular Formula

  • C16-H11-Cl-N2-O9-S2.2Na

Molecular Weight

  • 518.817
 
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Names and Synonyms

Name of Substance

  • Eriochrome blue SE

Synonyms

  • Disodium 3-((5-chloro-2-hydroxyphenyl)azo)-4,5-dihydroxy-2,7-naphthalenedisulfonate
  • EINECS 213-894-4

Systematic Names

  • 2,7-Naphthalenedisulfonic acid, 3-((5-chloro-2-hydroxyphenyl)azo)-4,5-dihydroxy-, disodium salt
  • 2,7-Naphthalenedisulfonic acid, 3-(2-(5-chloro-2-hydroxyphenyl)diazenyl)-4,5-dihydroxy-, sodium salt (1:2)
  • 3-((5-Chloro-2-hydroxyphenyl)azo)-4,5-dihydroxy-2,7-naphthalenedisulfonic acid disodium salt
  • Disodium 3-(5-chloro-2-hydroxyphenylazo)-4,5-dihydroxynaphthalene-2,7-disulphonate

Registry Numbers

CAS Registry Number

  • 1058-92-0

Other Registry Numbers

  • 50814-17-0
  • 62610-65-5

System Generated Number

  • 0001058920

Molecular Formulas

Molecular Formula

  • C16-H11-Cl-N2-O9-S2.2Na

Molecular Formula Fragments

  • C16-H11-Cl-N2-O9-S2
  • COMPONENT
  • Na

Structure Descriptors

InChI

1S/C16H11ClN2O9S2.2Na/c17-8-1-2-11(20)10(5-8)18-19-15-13(30(26,27)28)4-7-3-9(29(23,24)25)6-12(21)14(7)16(15)22;;/h1-6,20-22H,(H,23,24,25)(H,26,27,28);;/q;2*+1/p-2

InChIKey

LNXMADNIUWFTPP-UHFFFAOYSA-L

Smiles

c12c(c(c(\N=N/c3c(ccc(c3)Cl)O)c(c1)S(=O)(=O)[O-])O)c(cc(c2)S(=O)(=O)[O-])O.[Na+].[Na+]

Physical Properties

Physical Property Value Units Temp (deg C) Source
log P (octanol-water) 1.790 (none)   EST
Water Solubility 43.5 mg/L 25 EST
Vapor Pressure 3.75E-23 mm Hg 25 EST
Henry's Law Constant 2.61E-31 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 7.28E-12 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.