AMMONIUM SULFATE CAS N°: 7783-20-2

OECD SIDS
AMMONIUM SULFATE
4. ECOTOXICITY ID: 7783-20-2
DATE: 18.04.2006
the numbers of any of the acari studied.
Result:
In the first year evaluation, a significant increase of the
numbers of Cryptostigmata in the organic layer to more than
double of control level was detected. In the second year, the
abundances of Cryptostigmata were still high, but the
differences to control were not significant.
As the concentrations applied were in excess of those
delivered by acid rain, it was concluded that acid rain
would not have a detrimental effect on soil collembola.
Test condition: Simulated rainfall delivered 150 kg N ha -1 a -1 (708 kg
(NH4)2SO4 ha -1 a -1) in monthly increments to a field
planted with Picea abies at 2500 ha-1, with no ground
vegetation. The trees were approximately 14 m high at the
time of the experiment, and the canopy covered approx. 90%
of the test area. The salt was dissolved in 1 l of water,
and sprayed on 6m2 plots in a randomised block design. The
soil pH of both experimental and control plots was 5.3 at
the end of the test. The soil fauna were extracted and
counted twice, at the end of year 1 and at the end of year
2.
Year: 1989-1991.
Exposure Period: 2 years.
Reliability: (2) valid with restrictions
Concentration not measured. Only one concentration studied.
Flag:
Critical study for SIDS endpoint
22-JUL-2004 (97)
Species:
other: Ciliata
Exposure period: 120 day(s)
Unit:
other: kg/ha
Method:
other: see Test Condition
Year: 1983
GLP:
no data
Test substance: other TS: ammonium sulfate, no further details
Result:
A LC50 value could not be determined because after 4 months
the abundance had increased by 2-3 times that in the control
plot for all dose levels. No further details reported.
However, the results indicate that ammonium sulfate is not
toxic to ciliata in alpine pasture.
Test condition: Three sites of alpine pasture were treated with 100, 400,
and 1200 kg/ha ammonium sulfate on 13 June. Nematodes,
Testacea, and Ciliates were collected from each site and
from the control site on July 5, Sept 5, and Oct 18. Ciliata
biomass relative to controls was independent of ammonium
sulfate concentration, but after 4 months the abundance at
the treated sites were 2-3 times higher than at the control
plot.
Reliability: (4) not assignable
Abstract of conference presentation. Limited documentation.
Pilot study.
25-APR-2003 (98)
Species:
other: Meloidogyne incognita (root-knot nematode)
Exposure period: 72 hour(s)
Unit:
mg/kg soil dw
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