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EC number: 222-048-3 | CAS number: 3327-22-8
Result: LC50 = 9 ml/l
After 96 h exposure at the highest concentration, the number of fish and their condition, visually assessed, were the same as those of the control fish. Therefore LC50 was higher than 3200 mg/l. The slope of the concentration-effect curve could not be calculated.
NOEC 3200 mg (2094 mg/l), but in concentration 1800 mg/l (1178 mg/l) one fish died (the death is assumed to be accidental).
Eight short-term studies are available for fish. Seven studies were conducted with CHPTAC and one with its main degradation product 2, 3-Dihydroxy-N,N,N-trimethylpropan-1-aminium chloride. The determined effect concentrations are in a similar range and demonstrate that CHPTAC and its degradation product (diol) is not hazardous towards fish. The key value is determined as a 96-h LC50 of 4128 mg/L (nominal).
Overview of effect values:
Brachydanio rerio (new name: Danio rerio): 96-h LC50 = 4128 mg/L
Idus melanotus: 48-h LC0 = 1000 mg/L
Pimephales promelas: 96-h LC0 = 2000 mg/L
Leuciscus idus melanotus: 48-h LC0 = 11600 mg/L
48-h LC50 > 11600 mg/L
Leuciscus idus melanotus: 48-h LC0 = 1500 mg/L
48-h LC50 > 1500 mg/L
Leuciscus idus melanotus: 48-h LC50 = ca. 10440 mg/L
Leuciscus idus melanotus: 48-h LC0 > 900 mg/L
48-h LC50 > 900 mg/L
Effect concentration for the diol: Brachydanio rerio (new name: Danio rerio): 96-h LC50 > 3200 mg/L
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