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Diss Factsheets
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EC number: 917-830-2 | CAS number: 1186514-91-9
- 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:
- review of existing data
- Type of information:
- other: review of existing data
- Adequacy of study:
- key study
- Study period:
- 2017
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Justification for type of information:
- A paper-based toxicokinetic assessment (TKA) was conducted in accordance with Annex VIII Section 8.8 of Regulation (EC) No. 1907/2006 and based on the Guidance on information requirements and chemical safety assessment Chapter R.7c: Endpoint specific guidance (ECHA, 2014).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 107
- Report date:
- 2017
Materials and methods
- Objective of study:
- absorption
- distribution
- excretion
- metabolism
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: Regulation (EC) No. 1907/2006, Annex VIII Section 8.8
- Qualifier:
- according to guideline
- Guideline:
- other: ECHA, 2014, Guidance on information requirements and chemical safety assessment Chapter R.7c: Endpoint specific guidance
- Principles of method if other than guideline:
- Paper-based review of the available literature
- GLP compliance:
- no
Test material
- Reference substance name:
- Esterification reaction of fatty acids, C16-18 and C18-unsatd.; 3,4-epoxycyclohexyl methyl-3,4-epoxycyclohexan carboxylate and neodecanoic acid, oxiranylmethyl ester
- Molecular formula:
- not available for UVCB substances
- IUPAC Name:
- Esterification reaction of fatty acids, C16-18 and C18-unsatd.; 3,4-epoxycyclohexyl methyl-3,4-epoxycyclohexan carboxylate and neodecanoic acid, oxiranylmethyl ester
- Test material form:
- liquid
- Details on test material:
- UVCB Purity 100% Batch Number: 210164480 Expiration Date: 16 December 2017
Constituent 1
- Radiolabelling:
- no
Results and discussion
Main ADME resultsopen allclose all
- Type:
- absorption
- Results:
- Low absorption via oral, dermal and inhalation routes
- Type:
- distribution
- Results:
- Low observed toxicity suggests minimal distribution or absorption into the systemic compartment. Theoretically, absorbed material may be broken down into fatty acid derivatives, which are distributed through the systemic circulation and metabolised.
- Type:
- metabolism
- Results:
- In in vitro mutagenicity studies, metabolism by rat hepatic S9 fraction did not result in formation of mutagenic products.
- Type:
- excretion
- Results:
- Elimination of unabsorbed and unchanged ZEF 6099/100, as well as fatty acid esters, is likely via fecal excretion.
Toxicokinetic / pharmacokinetic studies
- Details on absorption:
- ZEF 6099/100 is very slightly water soluble, has a relatively high log Kow with a high molecular weight polymeric structure which suggests low potential for absorption across the skin and gastrointestinal tract. Lipophilic substances have limited solubility in gastrointestinal fluids. While dermal absorption data for ZEF 6099/100 are not available, topically applied fatty acid methyl esters are theoretically able to penetrate to the living cells of normal epidermis, enter into metabolism and significantly modify endogenous epidermal lipids. Due to its molecular weight, ZEF 6099/100 will not readily penetrate the epidermis and due to the low water solubility, ZEF 6099/100 will not readily pass from epidermis to dermis. The low vapor pressure exerted is an indication of low potential exposure by the inhalation route as well.
- Details on distribution in tissues:
- No evidence of systemic target organ toxicity was seen in a repeated dose study in the rat with ZEF 6099/100 by oral administration. The low water solubility and relatively high partitioning into octanol of ZEF 6099/100 indicates that it may accumulate in body fats and/or breast milk. Fatty acid esters are distributed into plasma and will be distributed to highly perfused tissues such as the liver.
- Details on excretion:
- Fecal excretion is likely a major route of elimination of unabsorbed and unchanged ZEF 6099/100. Fecal excretion is also a likely major pathway of elimination of any fatty acid esters.
Metabolite characterisation studies
- Metabolites identified:
- no
- Details on metabolites:
- ZEF 6099/100 is not active in mutagenicity assays in the absence and presence of metabolic activation by rat liver S9-mix induced by Aroclor 1254. ZEF 6099/100 also did not induce gene mutations at the HPRT locus in V79 cells in the absence and presence of metabolic activation by rat liver S9-mix induced by Aroclor 1254, nor did it induce the formation of micronuclei in human lymphocytes in vitro in the absence and presence of metabolic activation by rat liver S9-mix induced by Aroclor 1254 (Allnex, 2016, 2017). In each of these assays, metabolism by S9 rat liver enzymes did not result in increased mutation frequency.
Individual fatty acids found in the plasma lipid fraction will be circulated throughout the body, especially in perfused tissues. Fatty acids can undergo acylation by acyl transferases to triglycerides, phosphatidylcholine and cholesteryl ester which are found in the plasma lipid fraction. Fatty acids can also be oxidized via the β-oxidation cycle. Once in the β-oxidation cycle most fatty acids are completely oxidized to carbon dioxide. Β-oxidation is higher in rodents than in humans and is slower with increasing fatty acid saturation.
Any other information on results incl. tables
ZEF 6099/100 is a UVCB of complex reaction products, many of which are polymers/oligomers which have a high molecular weight over 1000 d. Results from computer models ((QSAR, EPI-Suite and OECD QSAR Toolbox) of the individual components of the UVCB show high log Kow values ranging from 10.46 -16.95.
Applicant's summary and conclusion
- Conclusions:
- The substance ZEF 6099/100 is expected to show low absorption by the oral, dermal and inhalation routes. If absorbed, it may be distributed to highly perfused organs, and the fatty acid components metabolised as triglycerides through the β-oxidation cycle. Metabolites are not expected to be systemically toxic. The substance is expected to show significant fecal elimination.
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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