Compositions useful for detecting the presence of oxygen,...

Details Compositions useful for detecting the presence of oxygen,... Compositions useful for detecting the presence of oxygen,...

G - Physics

01

N

150/6

G01N 31/22 (2006.01)

Patent

CA 1276863

ABSTRACT The present invention discloses compositions useful for the detection of oxygen in a humid medium, processes for the preparation of such compositions and oxygen detectors includ- ing these compositions which comprise at least one complex of the formula (LMX) is which the ligand L is selected from among the groups: Image where : R represents Cl,Br,NO2,C1-4-alkoxyl, C1-4-alkyl, m and p are comprised between 0 and 3, q is comprised between 0 and 2, substituent R on the pyridine nuclei never occupying a position neighboring the nitrogen atom, X = Cl,Br,I,NO3,ClO4. M represents Cu or Mn, and n is equal to 1 or 2, as colored indicator of the presence of oxygen in a humid medium or in solution in an acceptable solvent.

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