AMMONIUM SULFATE CAS N°: 7783-20-2

OECD SIDS
AMMONIUM SULFATE
4. ECOTOXICITY ID: 7783-20-2
DATE: 18.04.2006
Type:
static
Species:
other: Biomphalaria alexandria (freshwater snails)
Exposure period: 168 hour(s)
Unit: mg/l Analytical monitoring: no
Limit Test: no
Method:
GLP:
Test substance:
other: see Test Condition
no data
other TS: ammonium sulfate, no further details
Result:
100 ppm ammonium sulfate reduced the mean number of eggs per
snail by 59.8% from the number observed in the control
group. Observation of figures 2 and 3 in the paper shows
that ammonium sulfate had some effect on both hatchability
(more than 50% reduction after 10 days) and growth
(aproximately 33% reduction after 14 days).
Test condition: TEST ORGANISMS: Biomphalaria alexandria snails were obtained
from Abu-Rawash, Giza Governate, Egypt, and were maintained
in the laboratory under suitable conditions of aeration,
temperature (250C), and feeding. Other test conditions as
given in reference M. I. Nassar and A. Z. Abdel-hamid
(1993). Phytochemical and Molluscidial screening of some
local plants. Bull. NRC, Egypt, Vol 18 (4), pp335-341.).
TEST METHODOLOGY:50 adult snails were selected for
similarity of size and diameter were treated with 100 ppm
ammonium sulfate or left untreated (control group). Snails
were left to deposit their eggs over a period of 2 weeks.
Egg masses were collected, counted, and kept under suitable
conditions for hatching.
HATCHABILITY: Newly-hatched snails were counted daily until
they reached 14 days of age.GROWTH RATE: The shell diameters
of newly hatched snails was measured daily.
Reliability: (3) invalid
Time of the initial exposure not explicitely stated in this
paper. pH not measured. Ionic strength not measured.
Concentrations not measured.
26-JAN-2004 (79)
Type:
static
Species:
other: Cyclops viridis (Zooplankton)
Exposure period: 72 hour(s)
Unit: mg/l Analytical monitoring: no
Limit Test: no
Method:
other: see Test Condition
GLP:
no data
Test substance: other TS: commercial grade ammonium sulphate containing 20.6%
nitrogen
Result:
Test condition:
An LC50 value of 130 ppm was observed at 22.0 °C.
An LC50 value of 65 ppm was observed at 32.5 °C.
TEST ORGANISMS: Test organisms were collected from local
ponds and acclimated to laboratory conditions for 10 to 96
hours.
TEST VESSEL: 500 ml glass beakers containing unchlorinated
borehole water (pH 7.5; DO 7.6 ppm; total alkalinity 190 ppm
as CaCO3; ammonia nitrogen 0.05ppm) TEST METHODOLOGY: Twenty
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