Method and composition for magnesium ion detection using hydroxy-substituted cyanoformazans

Method and composition for magnesium ion detection using hydroxy-substituted cyanoformazans

1,5-Bis(2-hydroxyphenyl)-3-cyanoformazans substituted in at least one of the 3-, 4- and 5-positions of either phenyl moiety are useful for the determination of magnesium ions. The cyanoformazan substituents are chosen such that their cumulative Hammett-sigma value is greater than about 0.23. These c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HILBORN, DAVID A, BABB, BRUCE E
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
CHEMISTRY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
METALLURGY
ORGANIC CHEMISTRY
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:1,5-Bis(2-hydroxyphenyl)-3-cyanoformazans substituted in at least one of the 3-, 4- and 5-positions of either phenyl moiety are useful for the determination of magnesium ions. The cyanoformazan substituents are chosen such that their cumulative Hammett-sigma value is greater than about 0.23. These cyanoformazans are useful in analytical compositions and methods for either wet or dry assay of magnesium ions.