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Diss Factsheets
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EC number: 486-070-7 | CAS number: -
- 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 vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 02 Oct 2007 to 08 Jan 2008
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study was performed according to international test guidelines and to GLP.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 405 (Acute Eye Irritation / Corrosion)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 870.2400 (Acute Eye Irritation)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Test material form:
- other: liquid
Constituent 1
Test animals / tissue source
- Species:
- rabbit
- Strain:
- New Zealand White
- Details on test animals or tissues and environmental conditions:
- TEST ANIMALS
- Source:
Harlan Netherlands BV
Kreuzelweg 53, NL-5961 NM Horst/The Netherlands
Postbus 6174, NL-5960 AD Horst/The Netherlands
- Age at study initiation: 11 weeks for the male; 13-14 weeks for the females
- Weight at study initiation: 2445 to 2778 g
- Housing: individually in stainless steel cages equipped with feed hoppers and drinking water bowls. Wood blocks (RCC Ltd, Füllinsdorf) and haysticks 4642 (batch no. 08/07, Provimi Kliba AG) were provided for gnawing.
- Diet: Pelleted standard Provimi Kliba 3418 rabbit maintenance diet, batch no. 31/07 (Provimi Kliba AG, CH-4303 Kaiseraugst/Switzerland) ad libitum. Results of analysis for contaminants are archived at RCC Ltd.
- Water: Community tap water from Füllinsdorf ad libitum. Results of bacteriological, chemical and contaminant analyses are archived at RCC Ltd.
- Acclimation period: 5 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 17 to 23° C
- Humidity (%): 30-70%
- Air changes (per hr): 10-15
- Photoperiod (hrs dark / hrs light): 12/12 (music during the daytime light period)
IN-LIFE DATES: From: 15 Oct 2007 to 18 Oct 2007
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- not required
- Amount / concentration applied:
- TEST MATERIAL
- Amount applied : 0.1 mL/animal
- Concentration: 100% - Duration of treatment / exposure:
- Single instillation
- Observation period (in vivo):
- 1, 24, 48 and 72 hours after administration
- Number of animals or in vitro replicates:
- 1 male, 2 females
- Details on study design:
- REMOVAL OF TEST SUBSTANCE
- Washing (if done): no washing done.
SCORING SYSTEM: according to the numerical scoring system listed in the Commission Directive 2004/73/EC, April 29, 2004. Scleral reddening and ocular discharge were also assessed.
TOOL USED TO ASSESS SCORE: Varta Cliptrix diagnostic-lamp (Roth AG, CH-4153 Reinach/Switzerland)
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- iris score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- iris score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- iris score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0.33
- Max. score:
- 1
- Reversibility:
- fully reversible within: 48 hours
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0.33
- Max. score:
- 1
- Reversibility:
- fully reversible within: 48 hours
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- chemosis score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- chemosis score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- chemosis score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Remarks on result:
- no indication of irritation
- Irritant / corrosive response data:
- The test material did not induce significant or irriversible damage to the rabbit eye.
The grade 2 conjunctival redness was observed in all 3 animals at the 1-hour reading time and this effect was still observed (with grade 1) in 2 animals at 24 hours, but was no longer present at 48 hours.
A slight reddening of the sclerae was present in both females at the 1-hour evaluation. - Other effects:
- No other local signs and no staining observed.
No clinical signs and body weights were within the normal range.
Any other information on results incl. tables
Irritant/corrosive response data for each animal at each observation time up to removal of each animal from the test
Score at time point / Reversibility |
Cornea |
Iris |
Conjunctivae (redness) |
Chemosis |
Max. score: 4 |
Max. score: 2 |
Max. score: 3 |
Max. score: 4 |
|
60 min |
0/0/0 |
0/0/0 |
2/2/2 |
0/0/0 |
24 h |
0/0/0 |
0/0/0 |
1/1/0 |
0/0/0 |
48 h |
0/0/0 |
0/0/0 |
0/0/0 |
0/0/0 |
72 h |
0/0/0 |
0/0/0 |
0/0/0 |
0/0/0 |
Average 24h, 48h, 72h |
0/0/0 |
0/0/0 |
0.33/0.33/0 |
0/0/0 |
Reversibility*) |
- |
- |
c (48 hours) |
- |
*) Reversibility: c. = completely reversible.
Applicant's summary and conclusion
- Interpretation of results:
- not irritating
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- Based upon the referred classification criteria (Commission Directive 2001/59/EC of August 06, 2001), Dimethyl 2-methylglutarate is considered to be "not irritating" to the rabbit eye.
- Executive summary:
In an eye irritation study, 3 New Zealand White rabbits were treated by an ocular instillation of 0.1 mL of undiluted Dimethyl 2-methyl glutarate and were observed 1, 24, 48 and 72 hours after administration.
The instillation of the test material into the eye resulted in mild to moderate, early-onset (from 1-hour post-administration) and transient ocular changes, including reddening of the conjunctivae and sclerae (maximum mean score of 0.33 for the conjunctivae). These effects were reversible and no longer evident 24- or 48 hours after treatment.
No other local signs and no staining were observed. There were no clinical signs and body weights were within the normal range.
This ocular irritation study is classified as acceptable. It does satisfy the guideline requirement for an acute ocular irritation/corrosion study (OECD 405) in the rabbit.
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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