1,2-bis(chloromethyl)benzene

Biodegradation in water: screening tests

Administrative data

Endpoint:

biodegradation in water: ready biodegradability

Type of information:

experimental study

Adequacy of study:

other information

Study period:

From 2007-Jul-12 to 2007-Aug-24

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2007

Report date:

2007

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Specific details on test material used for the study:

Batch No.: DEBP007164
Purity: 99.3 % [w/w]
AZ-272-V1

Study design

Oxygen conditions:

aerobic

Inoculum or test system:

sewage, predominantly domestic, non-adapted

Duration of test (contact time):

42 d

Initial test substance concentration

Initial conc.:

20 mg/L

Based on:

test mat.

Parameter followed for biodegradation estimation

Parameter followed for biodegradation estimation:

CO2 evolution

Results and discussion

% Degradation

% Degradation 1

Parameter:

% degradation (CO2 evolution)

Value:

8

Sampling time:

14 d

% Degradation 2

Parameter:

% degradation (CO2 evolution)

Value:

40

Sampling time:

28 d

Any other information on results incl. tables

Time (days)	6	14	21	28	35	42
1st replicate	0	8	28	39	47	48
2st replicate	0	8	27	40	58	72

Applicant's summary and conclusion

Validity criteria fulfilled:

yes

Interpretation of results:

not readily biodegradable

Conclusions:

The test item must be regarded as not readily biodegradable in the 10-d-window and after 28 days but as biodegradable after 42 days.