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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 500-075-4 | CAS number: 31694-55-0 1 - 6.5 moles ethoxylated
- 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://chesar.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_toxicological-information.png)
Endpoint summary
Administrative data
Description of key information
Skin irritation, in vitro, EpiDerm (according to OECD TG 439, GLP): no skin irritating potential of the test substance was found (BASF SE, 2011).
Serious eye damage, in vitro, BCOP (according to OECD TG 437, GLP): the test substance does not cause serious eye damage under the test conditions applied (BASF SE, 2011).
Eye irritation, in vitro, EpiOcular (guideline under validation, GLP, Val. 1): no eye irritating potential of the test substance was found (BASF SE, 2011).
Available in vivo studies support, that both skin and eye irritation were reliably assessed by the key (in vitro) studies.
Key value for chemical safety assessment
Skin irritation / corrosion
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Eye irritation
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Respiratory irritation
Endpoint conclusion
- Endpoint conclusion:
- no study available
Additional information
Skin irritation / corrosion
- In vitro tests
The potential of the test substance to cause dermal corrosion/irritation was assessed by a single topical application of 30 μL test substance to a reconstructed three dimensional human epidermis model (EpiDerm™), according to the OECD TG 439 (BASF SE, 2011).
The irritation test was performed with 3 EpiDerm™ tissue samples, which were incubated with the test substance for 1 hour followed by a 42-hours post-incubation period. Tissue destruction was determined by measuring the metabolic activity of the tissue after exposure/post-incubation in a colorimetric test, using the reduction of mitochondrial dehydrogenase activity (measured by reduced formazan production after incubation with a tetrazolium salt [MTT] in comparison to the negative control tissues) as endpoint. The quotient of the test substance and negative control values indicates the relative tissue viability.
Following results were obtained: (1) the test substance is not able to reduce MTT directly; (2) in the irritation test; the mean viability of the test-substance treated tissues was 101 ± 11% after 1 hour exposure and ca. 42 hours post-incubation.
Based on the observed results and applying the evaluation criteria, the test substance does not show a skin irritation potential in the EpiDerm™ skin corrosion/irritation test under the test conditions chosen. Therefore, the test substance is not irritating according to EU CLP. Additionally taken into account that no irritation reaction was observed in the acute demal toxicity study conducted according to the OECD TG 402 in rats up to a dose level of 5000 mg/kg bw, the likelihood of a mildly irritating potential also can be excluded (the test substance is therefore not irritating according to GHS). - In vivo tests:No signs of skin irritation were identified directly after a 20h occlusive treatment of rabbits and following 24 h and 8 days (BASF SE, 1959).
Eye irritation
- In vitro tests
In a first in vitro study conducted according to the OECD TG 437 (BASF SE, 2011), the potential of the test substance to cause serious damage to the eyes was assessed by a single topical application of 750μL of the test substance to the epithelial surface of isolated bovine corneas, for an exposure period of 1 hours (Val 1).
Corneal opacity was then measured quantitatively as the amount of light transmission through the cornea, as well as permeability as the amount of sodium fluorescein dye that passes across the full thickness of the cornea. Both measurements were further used to calculate an In Vitro Irritancy Score (IVIS = mean opacity value + 15 * mean permeability OD value) of the test substance relative to the control corneas. A risk of serious damage to the eyes is predicted if the IVIS per treatment group was greater than 55, and no risk of serious damage to the eyes was predicted otherwise (if the IVIS per treatment group is ≤55). The calculated mean IVIS was 3.0 ± 1.2, 2.6 ± 3.3, and 184.0 ± 20.9, respectively in the test substance group, the negative control group and the positive control group. Based on the observed results and applying the evaluation criteria, the test substance does not cause serious eye damage in the Bovine Corneal Opacity and Permeability Test (BCOP Test) under the test conditions chosen.
The potential of the test substance to cause eye irritation was further evaluated in a second study, also conducted following the testing strategy for determination of eye irritation/corrosion as given in the OECD TG 405 and using a three dimensional human cornea model, based on the observation that irritant chemicals produce cytotoxicity in human reconstructed cornea after a short term topical exposure (BASF SE, 2011). In the well conducted GLP study (Val 1), 50 μL of the test substance was applied to a reconstructed three dimensional human cornea model (EpiOcularTM; 2 tissue sample per treatment) and the treated tissue was incubated for 30 minutes, washed out, and post-incubated under normal medium and culture conditions for 2 hours. Tissue destruction was then determined by measuring the metabolic activity of the tissue after exposure/post-incubation using a colorimetric test. The reduction of mitochondrial dehydrogenase activity, measured by reduced formazan production after incubation with a tetrazolium salt (MTT) was chosen as endpoint. The formazan production of the test substance treated epidermal tissues is compared to that of negative control tissues. The quotient of the values indicates the relative tissue viability. The test substance was considered "irritant", if the mean relative tissue viability with a test material is less than or equal to 50%, “non-irritant” or inconclusive otherwise.
The test substance was not able to reduce MTT directly, and the mean viability of the test-substance treated tissues was 81 ± 1%. Based on the observed results and applying the evaluation criteria, it was concluded, that the test substance does not show an eye irritation potential in the EpiOcular™ eye irritation test under the test conditions chosen.
- In vivo tests:
When 50µl othe tests substance were applied into the conjunctival sacs of rabbits, only slight, reversible conjunctivae redness was observed in rabbits after 10 min, 1 h, and 3 h in the unwashed eyes. No signs of irritation were apparent following 24h of observation time (BASF SE, 1959).
Justification for classification or non-classification
Dangerous Substance Directive (67/548/EEC)
The available experimental test data are considered reliable and suitable for the purpose of classification. Based on the criteria for classification of Directive 67/548/EEC no classification is warranted for skin and eye irritation.
Classification, Labelling, and Packaging Regulation (EC) No. 1272/2008
The available experimental test data are considered reliable and suitable for the purpose of classification. No classification is warranted for skin and eye irritation.
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.
![ECHA](/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/echa_logo.png)