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EC number: 213-485-0 | CAS number: 957-68-6
- 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:
- 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 405 (Acute Eye Irritation / Corrosion)
- Version / remarks:
- 2017
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
- Version / remarks:
- 2017
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 3-acetoxymethylen-7-amino-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
- EC Number:
- 213-485-0
- EC Name:
- 3-acetoxymethylen-7-amino-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
- Cas Number:
- 957-68-6
- Molecular formula:
- C10H12N2O5S
- IUPAC Name:
- 3-acetoxymethylen-7-amino-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
- Test material form:
- solid
Constituent 1
- Specific details on test material used for the study:
- Chemical name: (6R,7R)-3-[(acetyloxy)methyl)]-7-amino-8-oxo-5thia-1-azabicyclo[4.2.0]oct-2-ene-2carboxylic acid
Batch No.: B363198
Appearance: white yellowish, weakly odorous powder
CAS Number: 957-68-6
Retest date: May 2018
Storage conditions: in refrigerator: 5±3 °C, protected from light
pH value: 4
Test animals / tissue source
- Species:
- rabbit
- Strain:
- New Zealand White
- Details on test animals or tissues and environmental conditions:
- Source: S & K-LAP Kft. 2173 Kartal, Császár út 135, HUNGARY
Hygienic level during the study: good conventional
Justification of strain: The New Zealand white rabbit is one of the standard animals in acute eye irritation study.
Number of animal: 3 males
Age of animals: adult rabbits, 113 weeks old
Body weight range at the beginning of the study: 3276 - 3556 g
Body weight range at the end of the study: 3460 - 3642 g
Acclimatisation time: 19 days in first animal, 20 days in second and third animals
Housing: Animals were housed individually in metal cage.
Light: 12 hours daily, from 6.00 a.m. to 6.00 p.m.
Temperature: 20 ± 3 °C
Relative humidity: 30-70 %
Ventilation: above 10 air exchanges/hour by central air-condition system
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- not required
- Amount / concentration applied:
- 0.1 g of the test item was used for the study in undiluted form, as a single dose. The test material was ground to a fine dust.
- Duration of treatment / exposure:
- The eyes of the test animals were not washed out 24 hour after test item application, because the test item had been removed from the eye of test animal by physiological mechanisms.
- Observation period (in vivo):
- 72 h
- Number of animals or in vitro replicates:
- 3
- Details on study design:
- Three male animals in acceptable health condition were selected for the test. Care was taken to select only those animals with normal eye condition, any with ocular lesions were rejected.
In the first step an initial test was performed using one animal. The test item was placed into the conjunctival sac of the left eye. The eyelids were held closed gently for about one second to prevent any loss of the test item. The contralateral eye served as control.
In the initial test no irritant effect was observed 24 hours after treatment. The confirmatory test was conducted using a second and third animal.
Topical anesthetics and systemic analgesics:
Approximately sixty minutes prior to test item application systemic analgesics (dose: 0.01 mg/kg) was administered subcutaneously. Approximately five minutes prior to test item application topical ocular anesthetic (dose: one drop) was applied to each eye. The eye of each animal that was not treated with a test item, but which was treated with topical anesthetics, served as a control.
Clinical Observations and Evaluation of Ocular Irritation
The eyes were examined at 1, 24, 48 and 72 hours after the application. The duration of the observation period was sufficient for the statement of reversibility or irreversibility of changes.
Any clinical signs of toxicity or signs of pain and/or distress were recorded at least twice daily, with a minimum of 6 hours between observations.
It was no humane sacrificing connected with severe eye lesions during the study.
The eye irritation scores were evaluated according to the scoring system by Draize (1979) and OECD 405.
The body weights were recorded at the beginning and at the end of the experiment, as well as before each systemic analgesics.
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
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- iris score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- iris score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- iris score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- chemosis score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- chemosis score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritation parameter:
- chemosis score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 0
- Irritant / corrosive response data:
- One hour after treatment some hyperemic blood vessels (score 1) were observed in all animals. The swelling of the conjunctivae was different from normal (score 1) in animal No.: 2075 and the amount of discharge of the conjunctivae was different from normal (score 1) in all animals.
24 h, 48 h and 72 h after treatment all animals were free of symptoms.
72 hours after the treatment the study was finished.
During the study the control eyes of animals were symptom-free. - Other effects:
- Determined physical-chemical properties of the test item did not reveal potential corrosion effects to the eye.
No systemic toxicity was observed on the day of the treatment and during the 3-day observation period. The body weight of animals corresponded to their species and age. Sign of pain and distress as discharge was observed in all animals on the treatment day at first observation.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The test item caused slight conjunctival irritant effects which were fully reversible within 24 hours.
- Executive summary:
The test item was applied to the rabbits' eye mucosa according to OECD guideline 405. The test item caused slight conjunctival irritant effects which were fully reversible within 24 hours.
According to the EC criteria for classification and labelling requirements for dangerous substances and preparations, the test item does not have to be classified and has no obligatory labelling requirement for eye irritation.
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