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EC number: 931-597-4
CAS number: -
% Inhibition = [1 -[Respiration rate of test flask/Mean resp. rate of
TABLE 2 Inhibition Results
Nominal test concentration
pH of test flasks
a Calculated using mean control respiration rate = 61.7 mg O2/Lh
of ash to micro-organisms was determined in a GLP compliant laboratory
study according to OECD Guideline 209 (Activated Sludge, Respiration
Inhibition Test). Because of low water solubility, ash was added
directly to the test flasks without preparing test solutions.
Additionally, reverse osmosis water, activated sludge and synthetic
sludge were included in the test flasks. A reference substance was
3,5-dichlorophenol. The respiration rate of each culture was measured
with microcathode oxygen electrodes after three hours exposure at the
end of the test and compared with the mean respiration rate of the two
control cultures. Finally, the EC50value was estimated
by Strathkelvin ASR System Data Analysis software, Version 220.127.116.11. The
EC50value was found to be >100
Toxicity of Ash to micro-organisms was determined in a GLP compliant laboratory study according to OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test). The EC50 (3h) was >100.
Due to low water solubility, Ash was used in the test as solid without
preparing a stock solution.
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