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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August 1979 till Februar 1983
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Principles of method if other than guideline:
no data
GLP compliance:
not specified
Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, non-adapted
Duration of test (contact time):
20 d
Key result
Parameter:
% degradation (O2 consumption)
Value:
>= 71
Sampling time:
20 d
Details on results:
pH value: 7.0

CSB: calculated 2618 mg/g, found 2549 mg/g = 97 %.

BSB-use: 2.4 mL/L; BSB at output (1 g/L): 1833 mg/g

Validity criteria fulfilled:
not specified
Interpretation of results:
readily biodegradable, but failing 10-day window
Conclusions:
Within 20 days, a degradation of 71 % was determined for cyclohex-3 -ene-1 -carbaldehyde; and hence cyclohex-3 -ene-1 -carbaldehyde is considered to be "Readily Biodegradable but failing the 10-day window".
Executive summary:

Within 20 days, a degradation of 71 % was determined for cyclohex-3 -ene-1 -carbaldehyde; and hence cyclohex-3 -ene-1 -carbaldehyde is considered to be "Readily Biodegradable but failing the 10-day window".

Description of key information

Within 20 days, a degradation of 71 % was determined for cyclohex-3 -ene-1 -carbaldehyde; and hence cyclohex-3 -ene-1 -carbaldehyde is considered to be "Readily Biodegradable, but failing the 10-day window".

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable but failing 10-day window
Type of water:
freshwater

Additional information