Registration Dossier
Registration Dossier
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EC number: 296-292-4 | CAS number: 92457-12-0
Toxicity to microorganisms
Administrative data
- Endpoint:
- activated sludge respiration inhibition testing
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2013
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 013
- Report date:
- 2013
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 301 D non GLP
- Principles of method if other than guideline:
- - Principle of test:
OECD 301 D
- Short description of test conditions: Ready Biodegradability study
- Parameters analysed / observed: Biodegradation of the substance during 28 days - GLP compliance:
- no
- Remarks:
- Performed in US in 2013 but not for REACH purpose
Test material
- Reference substance name:
- Jojoba, ext., hydrogenated
- EC Number:
- 296-292-4
- EC Name:
- Jojoba, ext., hydrogenated
- Cas Number:
- 92457-12-0
- Molecular formula:
- No molecular formula is available since it is a UVCB substance
- IUPAC Name:
- Jojoba (Simmondsia Chinensis) Seed Oil Hydrogenated
- Test material form:
- solid: flakes
Constituent 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: JHF-713-287
- Expiration date of the lot/batch: unknown
- Purity test date: 100%
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature
- Stability under test conditions: Stable
Test solutions
- Vehicle:
- no
Test organisms
- Test organisms (species):
- sewage, domestic
- Details on inoculum:
- Inoculum : effluent
Study design
- Total exposure duration:
- 28 d
Test conditions
- Test temperature:
- 20°C
- pH:
- pH at initiation from 7.44 to 7.57
Results and discussion
Effect concentrations
- Key result
- Duration:
- 28 d
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 2 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: inhibition of activated sludge respiration
- Details on results:
- Bacterial plate counts at termination (Day 28) showed that the control, reference, and hydrogenated jojoba oil test substance treatments contained 2.2 × 104, 4.6 × 104, and 9.1 × 104 CFU/mL, respectively and indicated that the microbial inoculum remained consistent through the study and across the sample types. No inhibition was observed.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- no
- Conclusions:
- A NOEC (28 days) of 2 mg/L (nominal) can be reported for the inhibition of activated sludge respiration for Hydrogenated Jojoba Oil
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