Process for the synthesis of monochloramine

Details Process for the synthesis of monochloramine Process for the synthesis of monochloramine

2006-05-16

2006-05-16

Pak, John (Department: 1616)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C564S114000, C424S600000, C424S661000, C424S721000, C423S351000, C423S413000

Reexamination Certificate

active

07045659

ABSTRACT:
The invention relates to a process for the synthesis of monochloramine by reaction of an ammonium chloride solution with a sodium hypochlorite solution. The sodium hypochlorite solution is basified beforehand with an inorganic base and the ratio of the concentration of ammonium chloride in the reaction medium to the concentration of sodium hypochlorite in the reaction medium is between 1 and 1.5. This ratio is preferably equal to 1.1.

REFERENCES:
patent: 3254952 (1966-06-01), Raleigh et al.
patent: 6222071 (2001-04-01), Delalu et al.
Delalu, H. et al., “Synthesis of enriched solutions of chloramine starting from hypochlorite at high chlorometric degree,” Chemical Engineering, 2001, vol. 83(3), pp. 219-224.
Derwent Abstract 1991-118629; abstracting DE 4029119 (1991).
Database WPI, Section Ch, Week 198828, Derwent Publications Ltd, London, BG; AN 1988-196157 XP002244861 (1988).
Database CA ‘On Line’ Chemical Abstracts Service, Columbus, Ohio, US; Delalu et al, “Synthesis . . . Degree” retrieved from STN, Database accession No. 135″290834 CA XP002244860 (2001).

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