Chemistry: physical processes – Physical processes – Crystallization
Patent
1974-10-15
1976-09-14
Serwin, R.E.
Chemistry: physical processes
Physical processes
Crystallization
23230R, 23253R, G01N 3316, G01N 2124, G01N 3302
Patent
active
039804330
ABSTRACT:
A method for determining the amount of carboxylic acid in which a carboxylic acid in a sample sample is reacted with a hydroxylammonium salt under the presence of carbodiimide to provide hydroxamic acid and the thus formed hydroxamic acid is reacted with a ferric compound to provide ferric hydroxamate, and a system for carrying out the method are disclosed.
REFERENCES:
patent: 3341299 (1967-09-01), Catravas
patent: 3728079 (1973-04-01), Moran
patent: 3883305 (1975-05-01), Hoskins et al.
Goldenberg et al., "Colorimetric Determination of Carboxylic Acid Derivatives as Hydroxamic Acids," Anal. Chem. vol. 30, No. 8, Aug. 1958 pp. 1327-1330.
Connors et al., "Detection and Determination of Some Carboxylic Acids in Aqueous Solution by Ni(II)-Catalyzed Hydroxamic Acid Formation," Anal. Chem. vol. 44, No. 2 Feb. 1972 pp. 336-339.
Kasai Yasuhiko
Tamura Zenzo
Tanimura Takenori
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