D-pentose, oligomeric, C5 alkyl glycosides

Biodegradation in water: screening tests

Administrative data

Endpoint:

biodegradation in water: ready biodegradability

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: According to OECD-311 guideline, but not GLP compliant.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 311 (Anaerobic Biodegradability of Organic Compounds in Digested Sludge: Measurement of Gas Production)

Deviations:

no

GLP compliance:

no

Remarks:

Applicant was not aware of the GLP obligation, but all conditions are met to considered this study as according to GLP requirements.

Test material

Reference

Name:

Unnamed

Type:

Constituent

Test material form:

semi-solid (amorphous): gel

Remarks:

migrated information: paste

Study design

Oxygen conditions:

anaerobic

Inoculum or test system:

activated sludge, non-adapted

Duration of test (contact time):

>= 28 - <= 60 d

Initial test substance concentration

Initial conc.:

>= 68.2 - <= 120.6 mg/L

Based on:

test mat.

Parameter followed for biodegradation estimation

Parameter followed for biodegradation estimation:

inorg. C analysis

Results and discussion

% Degradation

Parameter:

% degradation (inorg. C analysis)

Value:

>= 69 - <= 78

Sampling time:

30 d

Applicant's summary and conclusion

Validity criteria fulfilled:

yes

Interpretation of results:

readily biodegradable

Conclusions:

After 30 days in anaerobic conditions, biodegradation is 73.5%. It can be concluded that Appyclean-6505 is readily biodegradable
.