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EC number: 230-392-0 | CAS number: 7087-68-5
- 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
Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vitro / ex vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12 March 2012 - 11 May 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Compliant to GLP and testing guidelines; adequate consistence between data, comments and conclusions.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: EU method B.47 (In vitro eye irritation)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: OECD guideline 437 (In vitro eye irritation)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Ethyldiisopropylamine
- EC Number:
- 230-392-0
- EC Name:
- Ethyldiisopropylamine
- Cas Number:
- 7087-68-5
- Molecular formula:
- C8H19N
- IUPAC Name:
- ethylbis(propan-2-yl)amine
- Test material form:
- other: liquid
- Details on test material:
- - Name of test material: ETHYLDIISOPROPYLAMINE (EDIPA)
- Physical state: colorless to light yellow liquid
- Lot/batch No.: A20NCU010101
- Analytical purity: 99.74%
- Expiry date: April 2013
- Storage conditions: at room temperature and protected from humidity.
Constituent 1
Test animals / tissue source
- Details on test animals or tissues and environmental conditions:
- Origin: bovine eyes were obtained from freshly slaughtered cattle at the abattoir (SOCAVIA, Cany Barville - France, SOCAVIA, Beuvillers - France or EVA, Saint-Pierre-sur-Dives - France).
Age: bovine cattle were up to 12 months old.
Reason for choice: bovine corneas are recommended by regulatory authorities for this type of study. They are adapted for the evaluation of potential ocular irritants since they are part of the target organ.
Transport from supplier to CIT: the eyes were transported to CIT at ambient temperature, immerged in buffered Hanks medium containing an antibiotic [Hank’s Balanced Salts Solution (HBSS) plus penicillin/streptomycin (100 units/100 µg/mL final)]. A container with smooth internal surfaces was used for the transport to avoid damage to the corneas.
Origin: bovine eyes were obtained from freshly slaughtered cattle at the abattoir (EVA, Saint-Pierre-sur-Dives - France).
Age: bovine cattle were up to 12 months old.
Reason for choice: bovine corneas are recommended by regulatory authorities for this type of study. They are adapted for the evaluation of potential ocular irritants since they are part of the target organ.
Transport from supplier to CIT: the eyes were transported to CIT at ambient temperature, immerged in buffered Hanks medium containing an antibiotic [Hank’s Balanced Salts Solution (HBSS) plus penicillin/streptomycin (100 units/100 µg/mL final)]. A container with smooth internal surfaces was used for the transport to avoid damage to the corneas.
Selection: a careful macroscopic examination was performed on all eyes to detect the presence of any defects (opacity, scratches, pigmentation, neovascularization, etc). Any eyes with defects were discarded. The examination was performed under a lamp, using HBSS in order to keep the eyes moistened. Particular attention was paid to the corneas and the eyes were swiveled in order to observe the fringe areas and any scratches directly under the light.
Preparation of the selected corneas: the tissues surrounding the eyeball were carefully pulled away and the cornea, surrounded by approximately 2 to 3 mm of sclera, was dissected out. The isolated corneas were stored in HBSS until all corneas had been prepared.
Washing of the corneas: the corneas were washed for 15 minutes, three times, in HBSS plus penicillin/streptomycin (100 units/100 µg/mL final) at room temperature. The corneas were used immediately or within a maximum of 24 hours.
The prepared corneas were stored and used within 24 hours.
Dates of experimental phase: from 07 May 2012 to 11 May 2012.
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- other: in vitro negative and positive controls
- Duration of treatment / exposure:
- Exposure period of 10 minutes, followed by rinsing.
- Observation period (in vivo):
- Opacity measurement:
- before treatment,
- after 2-hour incubation in water.
Permeability measurement:
- after 90-min incubation in water (and other procedures), following the 2nd opacity measurement - Number of animals or in vitro replicates:
- Not applicable
Triplicate corneas for each timepoint and tested substance (test item, negative control, positive control) - Details on study design:
- REMOVAL OF TEST SUBSTANCE
- Rinsing: the anterior part of the eye was emptied and then rinsed 3 times with cMEM.
NEGATIVE CONTROL:
0.9% NaCl.
POSITIVE CONTROL:
10% sodium hydroxide solution (10% NaOH).
SCORING SYSTEM/TOOL
- Opacity:
Using an opacitometer
The average change in opacity during exposure is determined. It is corrected by subtracting the average negative control value from values in positive control and test item.
- Permeability:
Using a spectrophotometer: optical density (OD) at 490 nm wavelength
The optical density is corrected by subtracting the average negative control value from values in positive control and test item.
- Scoring:
In vitro irritancy score (IVIS) = Corrected Opacity + (15 x Corrected OD)
Interpretation: see below
Results and discussion
In vitro
Results
- Irritation parameter:
- in vitro irritation score
- Run / experiment:
- mean
- Value:
- 66.6
- Vehicle controls validity:
- not applicable
- Negative controls validity:
- valid
- Positive controls validity:
- valid
Applicant's summary and conclusion
- Interpretation of results:
- Category 1 (irreversible effects on the eye)
- Remarks:
- Migrated information Criteria used for interpretation of results: expert judgment
- Conclusions:
- In vitro, the test item was corrosive or severe irritant to the eye.
- Executive summary:
The objective of this study was to evaluate the potential corrosive or severe irritant properties of ethyldiisopropylamine on bovine eyes. The study was performed according to the guideline OECD 437, in compliance with CIT standard operating procedures and with the principles of Good Laboratory Practices. Corneas obtained from freshly slaughtered calves were mounted in corneal holders. Both chambers of the corneal holder were filled with complemented MEM culture media (cMEM) and pre-incubated for 1 hour at 32°C. Three corneas were used for each treated series (test item, positive control and vehicle control). Before the treatment, a first opacity measurement was performed using an opacitometer. The test item was tested at the concentrations of 100%, in a single experiment using a treatment time of 10 minutes. At the completion of the treatment period, the test item was removed from the front opening of the anterior chamber and the epithelium was rinsed. The corneas were then incubated for 2 hours at 32°C before a second opacity measurement was performed. After the second opacity measurement, the medium of the anterior chamber was removed and filled with a fluoresceine solution. The holders were then incubated vertically for 90 minutes at 32°C. At the end of the incubation, the optical density of the solution from the posterior chamber of each holder was measured in order to determine the permeability of the cornea. Then the cornea was observed for opaque spots and other irregularities.
No notable opaque spots or irregularities were observed on negative control corneas following the treatment. Opacity and fluoresceine fixation were observed on the corneas treated with the test item following treatment. The In Vitro Irritancy Score (IVIS) was: 66.6. As the test item induced an IVIS = 55.1, it was considered as ocular corrosive/severe irritant.
Ethyldiisopropylamine is considered to be corrosive or severely irritant to the eye.
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