Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 202-993-8 | CAS number: 101-97-3
- 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
Basic toxicokinetics
Administrative data
- Endpoint:
- basic toxicokinetics, other
- Remarks:
- Expert Statement
- Type of information:
- other: Expert Statement
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Expert Statement, no study available
Data source
Reference
- Reference Type:
- other: Expert Statement
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
- Objective of study:
- absorption
- distribution
- excretion
- metabolism
- Principles of method if other than guideline:
- Expert statement
- GLP compliance:
- no
Test material
- Reference substance name:
- Ethyl phenylacetate
- EC Number:
- 202-993-8
- EC Name:
- Ethyl phenylacetate
- Cas Number:
- 101-97-3
- Molecular formula:
- C10H12O2
- IUPAC Name:
- ethyl phenylacetate
Constituent 1
Test animals
- Details on test animals or test system and environmental conditions:
- not applicable
Administration / exposure
- Duration and frequency of treatment / exposure:
- not applicable
- Positive control reference chemical:
- not applicable
- Details on study design:
- not applicable
- Details on dosing and sampling:
- not applicable
- Statistics:
- not applicable
Results and discussion
Toxicokinetic / pharmacokinetic studies
- Details on absorption:
- Generally, oral absorption is favoured for molecular weights below 500 g/mol. Furthermore, a high water solubility of more than 100 mg/L enables the substance to readily dissolve in the gastrointestinal fluids, allowing direct uptake into the systemic circulation through aqueous pores or via carriage of the molecules across membranes with the bulk passage of water. Ethyl phenylacetate has a water solubility of 1.2 g/L, therefore favouring absorption, and the moderate log Pow value is favourable for passive diffusion. Taken together, the physiochemical properties indicate that ethyl phenylacetate might become bioavailable following the oral route. This assumption is confirmed by the results of the acute toxicity studies. These results did not lead to classification of the substance, but at least mortality was observed in doses above 2200 mg/kg bw.
Due to the low vapour pressure of ethyl phenylacetate it is unlikely that the substance will be available as a vapour, but if it is the case absorption via inhalation route is possible due to the water solubility and the moderate log Pow value, enabling uptake directly across the respiratory tract epithelium by passive diffusion.
Dermal uptake is favoured for substances with a molecular weight < 100 g/mol and log Pow values between 1 and 4. The log Pow of ethyl phenylacetate is 2.36 and therefore lies in the range between -1 and 4. The molecular weight of the substances is above 100 g/mol, but <500 g/mol and therefore still small enough to be absorbed by skin. In addition, the substances must be sufficiently soluble in water to partition from the stratum corneum into the epidermis. Absorption is anticipated to be moderate to high if water solubility is between 100 – 10000 mg/L. Ethyl phenylacetate has a water solubility of 1200 mg/L, therefore supporting dermal absorption. Mortality occurred in the acute dermal toxicity study conducted on rabbits, confirming this assumption. - Details on distribution in tissues:
- As mentioned above, the physicochemical properties of ethyl phenylacetate favour systemic absorption following oral and dermal uptake.
Direct transport through aqueous pores is likely to be an entry route to the systemic circulation. In general, the smaller the molecule, the wider the distribution. Taken into account the log Pow and the water solubility, accumulation of ethyl phenylacetate is unlikely. The available study data revealed no indications of the substance to cross the blood-brain barrier.
- Details on excretion:
- The metabolites of ethyl phenylacetate are most likely excreted via urine due to their small molecular weight and their good water solubility.
Metabolite characterisation studies
- Details on metabolites:
- Metabolism mainly occurs in liver especially following oral intake.
Ethyl phenylacetate may be cleaved into the benzeneacetic acid and ethanol catalyzed by esterases. Afterwards, benzeneacetic acid could be glucuronised or sulfononated by the glucuronyltransferase or sulfotransferase, respectively, to enhance the hydrophilicity and to facilitate the elimination.
Ethanol is metabolized by alcohol dehydrogenase to acetaldehyde, which is further metabolized to acetate by aldehyde dehydrogenase. Acetate is broken down into water and carbon dioxide via the citric acid cycle.
Applicant's summary and conclusion
- Conclusions:
- Bioaccumulation of the test substanceis not considered critical based on expert statement.
- Executive summary:
Based on physicochemical characteristics, particularly water solubility and octanol-water partition coefficient, absorption by the oral and dermal route is expected. This assumption is further supported by the results of the oral and dermal acute toxicity studies, revealing some effects at very high doses. Absorption via inhalation route is unlikely, but can not be excluded. Bioaccumulation of ethyl phenylacetate or its breakdown products will not occur. After enzymatic conversion the metabolites will be mainly excreted via urine.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.