AMMONIUM SULFATE CAS N°: 7783-20-2

OECD SIDS
AMMONIUM SULFATE
4. ECOTOXICITY ID: 7783-20-2
DATE: 18.04.2006
Method:
GLP:
Test substance:
other: see Test Condition
no
other TS: ammonium sulfate, analytical grade
Result:
LC50 values reported for 24, 48, 72 hours were 430, 340, and
290 mg/L, respectively.
Test condition: The chemical was tested at different concentrations (60, 80,
100, 120, 150, 170, 190, 240, 300 ppm), selected from the
results of a preliminary test. In each concentration, 10
fishes were kept and were observed at short intervals during
the first day. Dead specimens were removed as soon as
possible.
Every 24 hours, all remaining fishes in an aquarium were
carefully transferred to a freshly prepared solution.
Temperature and pH were regularly measured and samples from
the test aquaria were taken at intervals for chemical
analysis.
Reliability: (2) valid with restrictions
limited documentation
Flag:
Critical study for SIDS endpoint
26-JAN-2004 (53) (54)
Type:
semistatic
Species:
Lebistes reticulatus (Fish, fresh water)
Exposure period: 96 hour(s)
Unit: mg/l Analytical monitoring: no
LC50: = 592
Limit Test: no
Method:
other: see Test Condition
Year: 1987
GLP:
no data
Test substance: other TS: ammonium sulfate, not further specified
Remark:
1 ppm was converted to 1 mg/l as no other information was
presented.
Result:
No mortality occurred at 300 ppm even after 7 days. Complete
mortality occurred at 900 ppm. Toxicity symptoms included a
high metabolic rate, reddish gills due to hemorrhage, and
sluggish movement. The toxicit of ammonium sulfate depends on
the concentration of free un-ionized ammonia, which tends to
increase in alkaline medium.
No change towards increased toxicity was observed with
prolonged exposure times.
Test condition: Fish (mature and gravid females) were acclimated for 10 days
in 10-L glass aquaria at pH 8.1-8.4 and 18.5-23.5 °C. Fish
were exposed at 20 °C to
ascending concentrations of ammonium sulfate (300 to 900
ppm) in batches of 10. Solutions were renewed on alternate
days.
Mortality, defined as median tolerance limits (TLm), were
determined at 24, 48, 72 and 96 hours.
Reliability: (2) valid with restrictions
limited documentation
Flag:
Critical study for SIDS endpoint
26-JAN-2004 (55)
Type:
Species:
semistatic
other: Heteropneustes fossilis
UNEP PUBLICATIONS 81