Calcium glycinate (1:2)

Biodegradation in water: screening tests

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:

2018

Reliability:

1 (reliable without restriction)

Qualifier:

according to guideline

Guideline:

OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)

GLP compliance:

yes (incl. QA statement)

Oxygen conditions:

aerobic

Inoculum or test system:

activated sludge, non-adapted

Duration of test (contact time):

28 d

Initial conc.:

150 mg/L

Based on:

test mat.

Parameter followed for biodegradation estimation:

O2 consumption

Details on study design:

None

Preliminary study:

No data

Test performance:

No data

Key result

Parameter:

% degradation (O2 consumption)

Value:

ca. 65.36

Sampling time:

28 d

Details on results:

Biodegradation is the oxidation of organic carbon and other elements in an organic molecule.
As the concentration of nitrites and nitrates was not determined for many test times (only for 14 and 28 days), it is not possible to calculate the biodegradation of the test material at many points. For this reason, the 10-day window principle was not applied.

Validity criteria fulfilled:

yes

Interpretation of results:

readily biodegradable

Conclusions:

On the 28th day of testing the final oxygen biodegradability, using manometric respirometry, the decomposition of the organic part of the tested material reached 65.36%. The threshold level for high biodegradability is 60% of the TOD. On the basis of the obtained results, it can be concluded that the glycinate part of the tested material probably shows a high susceptibility to aerobic biodegradation in the aquatic environment.

Executive summary:

Substance is readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:

readily biodegradable