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EC number: 305-105-8 | CAS number: 94334-32-4 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Thuya plicata, Cupressaceae.
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
![](https://poisoncentres.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_environmental-fate-and-pathways.png)
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- december 2017 to january 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Thuya occidentalis, ext.
- EC Number:
- 290-370-1
- EC Name:
- Thuya occidentalis, ext.
- Cas Number:
- 90131-58-1
- Molecular formula:
- not relevant for a UVCB substance
- IUPAC Name:
- Water steam distillation of leaves and twigs of Thuya occidentalis (family cupressaceae)
- Test material form:
- liquid
Constituent 1
- Specific details on test material used for the study:
- batch number 4802
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- water treatment plant "STEP de Lille" 33290 Blanquefort (France) - The inoculum was a fresh sample of activated sludge and was collected from the aeration tank of a sewage treatment plant receiving predominantly domestic sewage.
- Duration of test (contact time):
- 28 d
- Details on study design:
- The medium was prepared from concentrated stock solutions in ultrapure water as decribed in the guideline.
Reference substance
- Reference substance:
- other: sodium benzoate
Results and discussion
% Degradation
- Key result
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- average
- Value:
- 58.44
- Sampling time:
- 28 d
- Details on results:
- The test item “HUILE ESSENTIELLE DE THUYA OCCIDENTALIS / THUYA OCCIDENTALIS OIL” contains no nitrogen according to the elementary analysis (see Appendix 6: Study plan, Annex 1-2), the evaluation of biodegradation has to be based in the following expressed as ThODNH4.
The degradation for the 10-day window beginning was reached on Day 5, at the end of the 10-day window on Day 15 the mean degradation was 45.87%, therefore the D-day window failed.
The degradation rate of the test item “HUILE ESSENTIELLE DE THUYA OCCIDENTALIS /THUYA OCCIDENTALIS OIL” reached 58.44% (54.40 to 63.05), following the ThODNH4, after 28 days of incubation.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The degradation rate of the test item “HUILE ESSENTIELLE DE THUYA OCCIDENTALIS /THUYA OCCIDENTALIS OIL” reached 58.44% (54.40 to 63.05), following the ThODNH4, after 28 days of incubation.
According to the OECD guideline 301F, the test item is not considered to be readily biodegradable.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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