N-(4-amino-9,10-dihydro-3-methoxy-9,10-dioxo-1-anthryl)-4-methylbenzenesulphonamide

Biodegradation in water: screening tests

Link to relevant study record(s)

Reference

Endpoint:

biodegradation in water: screening tests

Type of information:

experimental study

Adequacy of study:

weight of evidence

Study period:

1977

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Principles of method if other than guideline:

The 5 day Biological Oxygen Demand (BOD5) was measured at 0.1, 1.0 and 10 g/L (with each time 5 or 25 mL/500 mL).
The Chemical Oxygen Demand (COD) was measured by titration.

GLP compliance:

no

Specific details on test material used for the study:

Test material: FAT 36034/W

Oxygen conditions:

not specified

Inoculum or test system:

not specified

Duration of test (contact time):

5 d

Preliminary study:

No data

Test performance:

No data

Remarks on result:

not measured/tested

Details on results:

No data

Key result

Parameter:

BOD5

Value:

54 mg O2/g test mat.

Key result

Parameter:

COD

Value:

1 317 mg O2/g test mat.

Key result

Parameter:

BOD5*100/COD

Value:

4

Results with reference substance:

No data

BOD/COD = 0.04

Interpretation of results:

not readily biodegradable

Conclusions:

BOD5: 54 mg 02/g ;
COD: 1317 mg 02/g;

Executive summary:

A study was conducted to evaluate the biodegradation potential of the test substance (of ca. 40 % purity) via BOD5 and COD determination. The BOD5 and COD for FAT 36034/A were determined to be 54 mg O₂/g and 1317 mg O₂/g, respectively. The ratio of these values was equivalent to 0.04, indicating that the substance showed low biodegradation potential under the test conditions.

Description of key information

A study was conducted to evaluate the biodegradation potential of the test substance (of ca. 40 % purity) via BOD5 and COD determination. The BOD5 and COD for FAT 36034/A were determined to be 54 mg O₂/g and 1317 mg O₂/g, respectively. The ratio of these values was equivalent to 0.04, indicating that the substance showed low biodegradation potential under the test conditions.

The COD of FAT 36034/E was determined to 1685 mg O₂/g when assessed according to EU Method C.6.

Key value for chemical safety assessment

Biodegradation in water:

under test conditions no biodegradation observed

Type of water:

freshwater