Registration Dossier
Registration Dossier
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EC number: 214-527-0 | CAS number: 1141-38-4
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- October 13, 1988 - January 10, 1989
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: Biodegradation Study of Chemicals" described in "About Test Methods for New Chemical Substances" (Kanpogyo Notification No. 5, Yakuhatsu Notification No. 615, and 49 Kikyoku Notification No. 392)
- GLP compliance:
- not specified
- Specific details on test material used for the study:
- - Batch No.: K-599
- Appearance: white powder
- Purity: 99%
- Melting point*: above 300° C (decomposition)
- Solubility: Water: 10 ppm or less (by TOC meter); Methanol, chloroform, ethyl acetate, tetrahydrofuran (THF): 100 ppm or less - Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Details on inoculum:
- - Microbial source: standard activated sludge 30 ppm
- Test volume: 300ml - Duration of test (contact time):
- ca. 28 d
- Initial conc.:
- ca. 100 other: ppm
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- CONTROL AND BLANK SYSTEM
- Inoculum blank: yes
- Toxicity control: no - Reference substance:
- aniline
- Key result
- Parameter:
- % degradation (TOC removal)
- Value:
- ca. 2
- Remarks on result:
- other: Sampling time not reported
- Results with reference substance:
- The degradation of the reference substance anilile reached 72% at the end of the test.
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- 2,6-naphthalene dicarboxylic acid is not biodegradable under the conditions of the test.
Reference
Description of key information
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
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