AMMONIUM SULFATE CAS N°: 7783-20-2

OECD SIDS
AMMONIUM SULFATE
4. ECOTOXICITY ID: 7783-20-2
DATE: 18.04.2006
extremes of 6.5 to 8.5, the pH was adjusted to 7.0 by the
addition of 10% (v/v) NaOH or 10% (v/v) H2SO4.
DILUTION WATER: Water quality was routinely monitored to
characterize the diluent water and ensure its suitability
according to the standard method for the examination of
water and wastewater DIN 38 412, part 11, October 1982. The
chemical characteristics are reported in the publication and
are in accordance with standards required by current testing
guidelines.
PHYSICAL/CHEMICAL PARAMETERS:
Determination of the temperature, dissolved oxygen and pH of
each test solution were made in conjunction with the daily
biological observation. The test temperature target was 20 -21
°C. The photoperiod duration was 16 h of light.
BIOLOGICAL PARAMETERS: biological observations were made
daily. Survival, condition and behavioral information were
recorded. Dead organism were removed when observed.
EXPOSURE PERIOD: 96 hours.
STATISTICAL METHOD: The 96-h LC50 value was derived using
the Probit method and geometric means.
Reliability: (1) valid without restriction
Flag:
Critical study for SIDS endpoint
23-JAN-2004 (49)
Type:
flow through
Species:
Brachydanio rerio (Fish, fresh water)
Exposure period: 96 hour(s)
Unit: mg/l Analytical monitoring: no
LC50: = 480
Limit Test: no
Method: other: ISO/TC 147/SC 5/WG (1976)
GLP:
no data
Test substance: other TS: ammonium sulfate, analytical grade
Result: The LC50 for NH4E+ was quoted to be 130 mg/l, 149 and 162
mg/l after 96, 48 and 24 hours, respectively.
The LC50 values for (NH4)2SO4 after 24 and 48 hours were 600
and 550 mg/L, respectively.
Test duration was with two ages:
1,8 g/5,9 cm and 2,1 g/6,2 cm.
The LC50 value based of the analytical N -determination:
LC50 related to NH3-N = 36.7 mg/l.
LC50 related to NH3 = 0.76 mg/l
Test condition:
78
The physico-chemical characteristics of the test water
(temperature, pH and O2) showed only minor variations during
the test period, as well as between different test aquaria in
a test series (no details reported).
TEST ORGANISMS: At least 14 days before the start of the
experiment, the fishes were put in storage tanks in the
experimental room. The fishes were fed once a day with
commercial fish food. The light was automatically regulated
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