AMMONIUM SULFATE CAS N°: 7783-20-2

OECD SIDS
AMMONIUM SULFATE
4. ECOTOXICITY ID: 7783-20-2
DATE: 18.04.2006
water and wastewater, 16th ed., American Public Health
Association, Washington DC pp. 689-832. The chemical
characteristics are reported in the publication and are in
accordance with standards required by current testing
guidelines. Activated carbon-filtered, dechlorinated and
tempered industrial service water from Lake Ontario was used
in all tests.
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 +/-
1 °C. If the dissolved oxygen concentration in a test chamber
fell below 40% of the starting level in a test, the test was
repeated with 0.05 L/min glass-sparger aeration All tests were
conducted within the extremes of 6.5 to 8.5 pH units. The
photoperiod duration was 16 h of light. The air-water
interface of each tank received approximately 50 ft-c of
cool-white fluorescent light.
BIOLOGICAL PARAMETERS: biological observations were made
daily. Survival, condition and behavioural information were
recorded. Dead organism were removed when observed. If more
than one-half of the population exposed in any treatment was
found to be dead, additional aquaria containing lower
concentrations of test soution were set up.
EXPOSURE PERIOD: 96 hours.
STATISTICAL METHOD: The 96-h LC50 value was derived using an
interpolation method as described by Stephan (Stephan CE:
Methods for calculating an LC50: Aquatic toxicology and
hazard evaluation. In: FL Mayer and JL Hamelink, eds., STP
634. American Society for Testing and Materials,
Philadelphia, PA, pp. 65-84). The linear interpolation uses
the logarithm transformation of the concentration and the
angle transformation of the percent dead between the two
doses that bracket 50% response.
TEST CONCENTRATIONS:
100, 10, 1 and 0.1 mg/l
YEAR OF STUDY: not reported.
Reliability: (2) valid with restrictions
concentration not measured. Limited documentation of
results.
Flag:
Critical study for SIDS endpoint
26-JAN-2004 (59)
Type:
Species:
static
other: Agonus cataphractus (armed bullhead, hooknose, pogge),
seawater fish
Exposure period: 96 hour(s)
Unit: mg/l Analytical monitoring: no
Method:
GLP:
Test substance:
other: see Test Conditions
no
other TS: ammonium sulfate, analytical grade
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