Registration Dossier
Registration Dossier
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EC number: 943-973-5 | CAS number: -
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From August 12 to 13, 1998
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Internal method: U.Pagga, K.Taeger. Development of a method for adsorption of dyestuffs on activated sludge. Wat. Res, 1051-1057, 1994.
- GLP compliance:
- yes
- Type of study / information:
- Evaluation of the adsorption potential on activated sludge and determination of the elimination percentage of the substance from water.
Test material
- Reference substance name:
- Acid Green 001
- IUPAC Name:
- Acid Green 001
- Test material form:
- solid
Constituent 1
Results and discussion
Any other information on results incl. tables
Colour elimination by adsorption on activated sludge: <10 % after 1 day
DOC elimination by adsorption on activated sludge: <10 % after 1 day
Preliminary investigations
TOC(mg/g) = 316
DOC (mg/g) = 316
Test Results
| Vessel | BC1 | TS1 | TS2 | |
| colour elimination | DOC elimination | |||
| Concentration test substance nominal value (mg/l) | - | 52.1 | 325 | |
| DOC concentration test substance (nominal value) (mg/l) | - | - | 1.0 | |
| Absorption value test subslance (nominal value) | - | 0.9 | - | |
| Values: | Elimination (%) | |||||||
| Date | Days | TS1
|
BC1
|
TS2
|
TS1
|
TS2
|
||
| absorption values | mg/l DOC | mg/l DOC | colour elimination | DOC elimination | ||||
| 12.08.98 | 0 | 1.143 | 0.5 | 0.3 | 132 | 131 | 0 | 0 |
| 12.08.98 | 0.125 | 0.879 | 3.6 | 4.1 | 97.0 | 100 | 0 | 6 |
| 13.08.98 | 1 | 0.928 | 5.9 | 5.9 | 108 | 111 | -5 | -3 |
BC = blank control, TS= test substance, DS=dry substance
Remarks
DOC values below the limit of detectability of 0.1 mg/l are indicated as 0.0
Water hardness in the test vessel: 2.5 mmol/l (14 °dH)
To gel the correct reference varues for the determination DOC elimnation and coIour elimination the measured data must be multiplicated with 0.77.
Applicant's summary and conclusion
- Conclusions:
- The test substance is not sufficiently eliminated from water.
- Executive summary:
Method:
The adsorption potential of the substance on activated sludge was evaluated in a static test, according to an internal mehod. The substance was incubated for 24 hours with the activated sludge, after which, the color elimination and Dissolved Organic Carbon (DOC) elimination were measured.
Results
Colour elimination by adsorption on activated sludge: <10 % after 1 day
DOC elimination by adsorption on activated sludge: <10 % after 1 day
Conclusion
The test substance is not sufficiently eliminated from water.
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