Chemistry: physical processes – Physical processes – Crystallization
Patent
1976-04-21
1977-08-09
Scovronek, Joseph
Chemistry: physical processes
Physical processes
Crystallization
252408, C09K 300, G01N 3106, G01N 3316
Patent
active
040407870
ABSTRACT:
A unique composition and method for the determination of urea using diacetylmonoxime and thiosemicarbazide in an aqueous strong acid to which has been added a color-intensifying amount of a cation selected from the group consisting of ferric and ceric; and a linearity-enhancing amount of 4-amino-antipyrine.
REFERENCES:
patent: 3567374 (1971-03-01), Wybenga
Ceriotti et al., Clin. Chem. Acta, 8, 295-299, (1963).
Ceriotti et al., Clin. Chem. Acta, 11, 519-522, (June, 1965).
Heiwig Jane R.
Roy Alejo V.
Ambrosius James W.
Scovronek Joseph
The Dow Chemical Company
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