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EC number: 222-048-3
CAS number: 3327-22-8
In the sterile batches chemical dechlorination was observed;
no DOC removal, the chloride concentration increased over
the 10 day period from 3.5 mM to 5.3 mM.
Concentration: 2000 mg Quat 188/l (=1000 mg
Degradation: 375 mg O2 elimination (375/1700
× 100 % = 22 %)
Based on the theoretical oxygen demand of
1700 mg O2/g test substance approximately 22 % of Quat 188 was degraded
after 20 days. Oxygen consumed by bacteria was
regenerated electrolytically to maintain a constant atmosphere within
the bottle. At the end of the incubation period
samples were analysed for level of Quat 188 remaining in the sample. The
analytical method was based on the conversion of Quat 188 to
trimethylamine. The analytical results indicated that 56 % of Quat 188
was degraded after 20 days. It can be concluded that
bacteria will utilize Quat 188 if it is the only source of food for
into account the available information CHPTAC is not readily
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