Chemistry: physical processes – Physical processes – Crystallization
Patent
1979-10-17
1982-06-29
Marcus, Michael S.
Chemistry: physical processes
Physical processes
Crystallization
23230B, 252408, G01N 3122, G01N 3318, G01N 3320
Patent
active
RE0309834
ABSTRACT:
3-(2-pyridyl)-5,6-bis(phenylsulfonic acid)-1,2,4-triazine and certain salts thereof, e.g. sodium, are provided together with a method for forming such compounds. These compounds are useful as reagents in the spectrophotometric determination of iron in water or other solutions.
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patent: 3506403 (1970-04-01), Fryer et al.
patent: 3537822 (1970-11-01), O'Malley et al.
patent: 3667915 (1972-06-01), Klein
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Hach Chemical Company
Marcus Michael S.
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