Reaction mass of Sodium 2-(2 or 3-{[(chloroacetyl)amino]methyl}-4-{[4-(cyclohexylamino)-9,10-dioxo-9,10-dihydroanthracen-1-yl]amino}phenoxy)-5-methylbenzenesulfonate and Sodium 2-(3 or 2-{[(chloroacetyl)amino]methyl}-4-{[4-(cyclohexylamino)-9,10-dioxo-9,10-dihydroanthracen-1-yl]amino}phenoxy)-5-methylbenzenesulfonate

Biodegradation in water: screening tests

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

biodegradation in water: ready biodegradability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1976

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

other: Ceiba Geigy Internal Method A-15

Version / remarks:

Comparable to internationally accepted guidelines

Deviations:

no

GLP compliance:

no

Oxygen conditions:

aerobic

Inoculum or test system:

activated sludge (adaptation not specified)

Details on inoculum:

Not available

Initial conc.:

10 mg/L

Based on:

not specified

Details on study design:

None

Preliminary study:

None

Test performance:

None

Remarks on result:

not measured/tested

Details on results:

None

Parameter:

BOD5

Value:

0 mg O2/g test mat.

Results with reference substance:

None

Validity criteria fulfilled:

not specified

Interpretation of results:

under test conditions no biodegradation observed

Conclusions:

BOD5 of FAT 20077/B is found to be 0 mg O2/g.

Executive summary:

BOD5 of FAT 20077/B is found to be 0 mg O2/g. Taking the results of the corresponding COD test into account the resulting BSB5/COD quotient is zero indicating that no biodegradation can be expected.

Reference 2

Endpoint:

biodegradation in water: ready biodegradability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1976

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Qualifier:

no guideline followed

Principles of method if other than guideline:

The part of a chemical substance that is able to be oxidized is determined in form of chemical oxygen demand (COD).

GLP compliance:

no

Specific details on test material used for the study:

None

Oxygen conditions:

aerobic

Inoculum or test system:

activated sludge (adaptation not specified)

Details on inoculum:

No data

Duration of test (contact time):

2 h

Details on study design:

Not available

Preliminary study:

Not available

Test performance:

Not available

Remarks on result:

not measured/tested

Details on results:

No data

Parameter:

COD

Value:

1 102

Validity criteria fulfilled:

not applicable

Interpretation of results:

under test conditions no biodegradation observed

Conclusions:

COD of FAT 20077/B was found to be 1102 mg/g O2.

Executive summary:

COD of FAT 20077/B was found to be 1102 mg/g O2. Taking the results of the corresponding BOD test into account the resulting BSB5/COD quotient is zero indicating that no biodegradation can be expected.

Description of key information

FAT 20077/A and FAT 20077/B were tested for the biological oxygen demand and chemical oxygen demand. For FAT 20077/B, the BOD5 and COD were determined to be 0 mg O2/g and 1102 mg/g O2, respectively. For FAT 20077/A, BOD5 and COD were determined to be 42 mg O2/g and 1116 mg/g O2, respectively.

Based on these values, the BOD5/COD ratio was <0.5, therefore the substance is not considered to be rapidly biodegradable.

Key value for chemical safety assessment

Biodegradation in water:

under test conditions no biodegradation observed