Process for monitoring the quantity of dimethyl hydantoin

Details Process for monitoring the quantity of dimethyl hydantoin Process for monitoring the quantity of dimethyl hydantoin

1989-02-22

1989-11-21

Schor, Kenneth M.

Chemistry: analytical and immunological testing

Heterocyclic carbon compound

Hetero-n

422 61, 422 55, 436 89, 436163, G01N 3122, G01N 3300

Patent

active

048822850

ABSTRACT:
Pool or spa water can be monitored for dimethyl hydantoin content, as a residue of disinfection with halogenated hydantoin, by determining the quantity of base required to adjust the pH to 9.3. The pH may be judged by a suitable indicator for example thymol phthalein or thymol blue. The method can be applied either titrimetrically, or by comparison colorimetrically with standard solutions and may be modified for use in relation to other halogenated hydantoins. The method may be applied to the testing of pools for compliance with an advisory dimethyl hydantoin content limit and may be embodied in a kit for easy poolside use.

REFERENCES:
patent: 4119535 (1978-10-01), White et al.
patent: 4698165 (1987-10-01), Theyson

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