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EC number: 486-080-1 | CAS number: 924626-15-3
- Life Cycle description
- Uses advised against
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- Irritation / corrosion
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Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- March 30, 2007 - Juni 01, 2007
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
- Version / remarks:
- , 2004
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 405 (Acute Eye Irritation / Corrosion)
- Version / remarks:
- , 2002
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- signed 2005-04-15
Test material
- Reference substance name:
- -
- EC Number:
- 486-080-1
- EC Name:
- -
- Cas Number:
- 924626-15-3
- Molecular formula:
- C20H20O3
- IUPAC Name:
- Reaction mass of (2E)-2-Benylidene-5,6-dimethoxy-3,3-dimethylindan-1-one and (2Z)-2-Benylidene-5,6-dimethoxy-3,3-dimethylindan-1-one
- Details on test material:
- Name: BIO 1031/1
Substance type: pure active substance
Physical state: solid
Storage condition of test material: ambient temp., dark, dry, in original container
Constituent 1
Test animals / tissue source
- Species:
- rabbit
- Strain:
- Himalayan
- Details on test animals or tissues and environmental conditions:
- TEST ANIMALS
- Source: Laboratory of Pharmacology and Toxicology GmbH & Co. KG, Germany. The rabbit is a commonly used non-rodent species for acute eye irritation/corrosion tests.
- Age at study initiation: 3.5-4.5 months
- Weight at study initiation:
Animal no. 1: 2.9 kg
Animal no. 2: 3.1 kg
Animal no. 3: 2.9 kg
- Housing: For 8 hours following test item application, the animals were kept singly in restrainers which allowed free movement of the head but prevented a complete body turn, wiping of the eyes with the paws and excluded irritation of the eye by excrements and urine. During the acclimatisation period and after the 8-hour period in restrainers, the animals were kept singly in cages with dimensions of 380 mm x 425 mm x 600 mm.
- Diet: ssniff7 K-H V2333 (ssniff Spezialdiäten GmbH, 59494 Soest, Germany) served as food. The food was available ad libitum.
- Water: ad libitum
- Acclimation period: yes
ENVIRONMENTAL CONDITIONS
- Temperature: 20 +/- 3°C
- Humidity. 30-70%
- Photoperiod: 12 hours light/dark cycle
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- not required
- Amount / concentration applied:
- 100 mg of the test item were administered into one eye in each of 3 animals.
- Duration of treatment / exposure:
- 1 hour
- Observation period (in vivo):
- 1, 24, 48 and 72 hours after administration of the test substance
- Number of animals or in vitro replicates:
- 3 rabbits (male)
- Details on study design:
- The test item was placed into the conjunctival sac of the right eye of each animal after gently pulling the lower lid away from the eyeball. The lids were then gently held together for about one second in order to prevent loss of the material. The left eye, which remained untreated, served as a control.
As no corrosive or severely irritation properties of the test item were expected, all three animals were treated at the same time.
REMOVAL OF TEST SUBSTANCE
- Washing (if done): 1 hour after administration the eyes were rinsed with portions of 20 mL 0.9% aqueous NaCl solution, each.
The eyes were examined ophthalmoscopically with a slit lamp prior to the administration and 1, 24, 48 and 72 hours after the administration. The eye reactions were observed and registered.
24 hours after administration, fluorescein was applied to the eyes before being examined to aid evaluation of the cornea for possible lesions.
SCORING SYSTEM:
Cornea:
0 = No ulceration or opacity
1 = Scattered or diffuse areas of opacity (other than slight dulling of normal lustre), details of iris clearly visible
2 = Easily discernible translucent area, details of iris slightly obscured
3 = Nacreous area, no details of iris visible, size of pupil barely discernible
4 = Opaque cornea, iris not discernible through the opacity
Iris:
0 = Normal
1 = Markedly deepened rugae, congestion, swelling, moderate circumcorneal hyperaemia, or injection, iris reactive to light (a sluggish reaction is considered to be an effect)
2 = Haemorrhage, gross destruction, or no reaction to light
Conjunctivae:
0 = Normal
1 = Some blood vessels hyperaemic (injected)
2 = Diffuse, crimson colour; individual vessels not easily discernible
3 = Diffuse beefy red
Chemosis:
0 = Normal
1 = Some swelling above normal
2 = Obvious swelling, with partial eversion of lids
3 = Swelling, with lids about half-closed
4 = Swelling, with lids more than half-closed
Any further lesions are listed.
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- conjunctivae score
- Remarks:
- (redness)
- Basis:
- animal #1
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 3
- Reversibility:
- fully reversible within: 24 hours
- Irritation parameter:
- conjunctivae score
- Remarks:
- (redness)
- Basis:
- animal #2
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0.33
- Max. score:
- 3
- Reversibility:
- fully reversible within: 48 hours
- Irritation parameter:
- conjunctivae score
- Remarks:
- (redness)
- Basis:
- animal #3
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 3
- Reversibility:
- fully reversible within: 24 hours
- Irritation parameter:
- chemosis score
- Basis:
- animal #1
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 4
- Irritation parameter:
- chemosis score
- Basis:
- animal #2
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 4
- Irritation parameter:
- chemosis score
- Basis:
- animal #3
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 4
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #1
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 4
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #2
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 4
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #3
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 4
- Irritation parameter:
- iris score
- Basis:
- animal #1
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 2
- Irritation parameter:
- iris score
- Basis:
- animal #2
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 2
- Irritation parameter:
- iris score
- Basis:
- animal #3
- Time point:
- other: overall at 24, 48 and 72 h
- Score:
- 0
- Max. score:
- 2
- Irritant / corrosive response data:
- Under the present test conditions, a single instillation of 100 mg BIO 1031/1 per animal into the conjunctival sac of the right eye of 3 rabbits caused the following changes:
Conjunctival redness was observed in all animals:
- animal no. 1 and 3: 60 minutes (grade 1) after instillation;
- animal no. 2: 60 minutes (grade 2) and 24 hours (grade 1) after instillation.
The corneae and the irises were not affected by instillation of the test item. There were no systemic intolerance reactions.
Reversibility of any observed effect: Changes fully reversible within 2 days
Applicant's summary and conclusion
- Interpretation of results:
- not irritating
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- SymHelios 1031 is non-irritation to eyes, hence, no labelling is required.
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