Colorimetric urea determination in presence of long hydrocarbon

Details Colorimetric urea determination in presence of long hydrocarbon Colorimetric urea determination in presence of long hydrocarbon

1981-08-14

1982-11-02

Marantz, Sidney

Chemistry: physical processes

Physical processes

Crystallization

23924, 252408, 422 61, G01N 3352, G01N 3362

Patent

active

043571441

ABSTRACT:
A colorimetric urea determination method, reagent, and reagent kit useful in end point and kinetic urea determination. Urea in a liquid sample reacts with o-phthalaldehyde and chromotropic acid or one of its salts in the presence of a linear long hydrocarbon chain amidobetaine to produce an intensely colored reaction product, the concentration of which is linearly related to the urea concentration in the sample.

REFERENCES:
patent: 4215995 (1980-08-01), Turk
patent: 4239649 (1980-12-01), Gindler
patent: 4273556 (1981-06-01), Gindler
Chemical Abstracts, 90:199783u (1979).

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