Registration Dossier
Registration Dossier
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EC number: 215-687-4 | CAS number: 1344-09-8
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Endpoint:
- biodegradation in water: screening tests
- Type of information:
- experimental study
- Adequacy of study:
- other information
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Well-documented study designed to evaluate the influence of silicate on functioning of model sewage treatment plant rather than the toxicity towards microorganisms.
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Confirmatory test, conforming with 82/242/EEC and 82/243/EEC
- Deviations:
- not specified
- GLP compliance:
- yes
- Remarks:
- Henkel KGaA Forschung Biologie, Oekologie.
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: activated sludge of a predominantly domestic sewage
- Initial conc.:
- 25 mg/L
- Based on:
- test mat.
- Details on results:
- RESULTS: EXPOSED
- Biodegradation: >90% of added sodium silicate was detected in the effluent. No significant elimination was observed. The test substance had no adverse effects on the model sewage plant.
RESULTS CONTROL: There were no significant differences in DOC, pH or dry mass of sludge between the control and silicate-dosed biodegradation unit.
STATISTICAL RESULTS: Not reported. - Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- other: Product brochure of producers association
- Adequacy of study:
- other information
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Product brochure of producers association; data without proof.
- Details on results:
- Not applicable (inorganic substance)
Referenceopen allclose all
No biodegradation since inorganic substance.
Description of key information
No biodegradation since inorganic substance.
Key value for chemical safety assessment
Additional information
No biodegradation since inorganic substance. According to REACh legislation, Annex VII - X, 9.2, column 2, no further degradation testing required based on chemical safety assessment.
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