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EC number: 807-674-2 | CAS number: 109884-54-0
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
The dataset investigating the aquatic toxicity ofIsooctadecanoic acid, 1,1'-(2,2-dimethyl-1,3-propanediyl) ester (CAS 109884-54-0) is not complete.In order to fulfil the standard information requirements, in accordance with Annex XI, 1.5, of Regulation (EC) No 1907/2006, read-across from structurally related source substances was conducted.
In accordance with Article 13 (1) of Regulation (EC) No 1907/2006, "information on intrinsic properties of substances may be generated by means other than tests, provided that the conditions set out in Annex XI are met.” In particular for aquatic toxicity, information shall be generated whenever possible by means other than vertebrate animal tests, which includes the use of information from structurally related substances (grouping or read-across).
Having regard to the general rules for grouping of substances and read-across approach laid down in Annex XI, Item 1.5, of Regulation (EC) No 1907/2006 whereby substances may be predicted as similar provided that their physicochemical, toxicological and ecotoxicological properties are likely to be similar or follow a regular pattern as a result of structural similarity. The source substancesneopentylglycol dioleate (CAS 42222-50-4) and Heptanoic acid, ester with 2,2-dimethyl-1,3-propanediol (CAS 68855-18-5)are considered to be similar on the basis of the structural similar properties and activities. The available endpoint information on the source substances is used to predict the aquatic toxicity of the target substanceIsooctadecanoic acid, 1,1'-(2,2-dimethyl-1,3-propanediyl) ester.
The target substance is characterized as a diester of neopentylglycol and mainly C18 isostearic acid with a minor amount of monoesters of neopentylglycol with C18 isostearic acid. The source substance neopentyl glycol dioleate (CAS 42222-50-4) is mainly defined as a diester of C18 and C18 unsaturated linear fatty acids and neopentylglycol whereas Heptanoic acid, ester with 2,2-dimethyl-1,3-propanediol (CAS 68855-18-5) is a diester of linear C7 fatty acids and neopentylglycol.All selected source substances are representative for the target substance. They only differ slightly in their specification. However, none of the selected source substances contains any functional group which might change the overall mode of action and toxicity. A detailed analogue approach justification is provided in the technical dossier (see IUCLID Section 13).
All available experimental data on the target and source
substances performed according to internationally accepted guidelines
indicate no evidence of acute and chronic toxicity to aquatic organisms.
Data for all three trophic levels are available. No toxicity was
observed up to the limit of water solubility in all available
experimental studies. The water solubility of the target substance was
determined to be <8 µg/L at 19.9 °C, pH = 6.9.
The
short-term toxicity to fish was determined in standard OECD 203 study
for the target substance. No mortality was observed after 96 h resulting
in LC50 > the limit test concentration (i.e. above the water solubility
limit). The same was recorded for the toxicity to aquatic algae and the
short-term toxicity to aquatic invertebrates. No inhibition of growth of
aquatic algae and no immobilization of daphnids was observed in
experimental studies for the target substance up to the limit of water
solubility. Due to the low water solubility, long-term testing to
aquatic invertebrates was considered to be necessary to assess the
aquatic toxicity. The available study performed with a suitable source
substance resulted in a NOELR (21 d) ≥ 1 mg/L (nominal) indicating no
effects on reproduction up to the limit of water solubility. Long-term
toxicity testing to fish was not considered to be necessary since there
was no evidence from the available data that fish are more sensitive
compared to aquatic invertebrates. No toxicity to fish was observed in
the available acute tests. Thus, in order to avoid unnecessary
vertebrate testing, no long-term testing with fish was proposed.
The degradation process in commercial sewage treatment plants is not
suspected to be inhibited by the target substance. One available study
from a suitable source substance performed with activated sludge from a
sewage treatment plant did not indicate a risk since respiration of
activated sludge microorganisms was not inhibited.
Based on the result from the target substance and structurally related read-across substances (in accordance to Regulation (EC) No 1907/2006 Annex XI, 1.5) it can be concluded that Isooctadecanoic acid, 1,1'-(2,2-dimethyl-1,3-propanediyl) ester exhibits no toxic effects on freshwater organisms up to the limit of the water solubility. As it can be seen in the data matrix of the analogue justification in IUCLID Section 13, all reliable data from the target and the source substances support the read-across by showing a consistent pattern of results.
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.