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EC number: 915-069-0 | CAS number: -
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- Irritation / corrosion
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Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vivo
- Remarks:
- In accordance with Regulation (EU) 2016/863, preamble (7), adequate information from existing in vivo eye irritation study used to fulfil the standard information requirement point 8.2 Regulation (EC) No 1907/2006.
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1991-02-11 to 1991-03-04
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP, Guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 991
- Report date:
- 1991
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 405 (Acute Eye Irritation / Corrosion)
- Version / remarks:
- February 24, 1987
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
- Version / remarks:
- EEC Directive 84/449 EEC, EEC Publication No. L251, September 1984
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- dialuminium(3+) tetracalcium hexaoxidandiide phosphonate
- EC Number:
- 915-069-0
- Molecular formula:
- not applicable
- IUPAC Name:
- dialuminium(3+) tetracalcium hexaoxidandiide phosphonate
Constituent 1
Test animals / tissue source
- Species:
- rabbit
- Strain:
- New Zealand White
- Details on test animals or tissues and environmental conditions:
- TEST ANIMALS
- Source: Broekman Institute, Someren, The Netherlands
- Selection of animals: Animals for test were selected from stock on the basis of background history. Each animal may have been used on a maximum of 3 previous occasions (in up to 2 skin irritation studies - one test each flank, and possibly 1 eye irritation study). No significant response has been noted on any previous occasion. Only eyes not previously treated were used for the test.
- Rational for selection: To minimise animal usage without compromising sudy integrity.
- Age at study initiation: approximately 20 weeks
- Weight at study initiation: 3106-3377 g
- Housing: Individually in cages with perforated floors equipped with an automatic drinking system (ITL, Bergen, The Netherlands)
- Diet: Standard laboratory rabbit diet (LKK-20, pellet diameter 4mm, Hope Farms, Woerden, The Netherlands) approximately 100 g per day
- Water: tap-water diluted with decalcified water ad libitum
- Acclimation period: At least five days before start of treatment under test conditions.
ENVIRONMENTAL CONDITIONS
- Temperature: 21°C
- Humidity: 55 %
- Air changes (per hr): 15
- Photoperiod: Lighting was 12 hours artificial fluorescent light and 12 hours dark per day.
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- other: The other eye of each animal remained untreated and served as the reference control.
- Amount / concentration applied:
- TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 62 +/- 2 mg (equivalent to 0.1 mL) per animal
VEHICLE
- no vehicle used - Duration of treatment / exposure:
- 24 hours
- Observation period (in vivo):
- 21 days
- Number of animals or in vitro replicates:
- 3
- Details on study design:
- TEST SUBSTANCE PREPARATION: The powdery test substance was instilled as delivered by the sponsor.
TREATMENT: On day 1, prior to test substance administration, the animals were physically examined and the eyes were found to be normal.
The test substance (approximately 62 mg (0.1 mL) per animal) was instilled in the conjunctival sac of one 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 to prevent loss of the test substance. The other eye remained untreated and served as the reference control.
REMOVAL OF TEST SUBSTANCE
- Washing (if done): Immediately after fluorescein examination on day 2, both eyes of all three animals were rinsed with approximately 50 mL tepid tap-water per eye, using a velocity of flow which did not affect the eyes, to remove residual test substance. However, not all test substance could be rinsed out because of adherence of test substance to the conjunctivae.
- Time after start of exposure: day 2 (24 hours after treatment)
SCORING SYSTEM: The test results were evaluated according to the EEC general classification and labelling requirements for dangerous substances (Annex VI of the EEC Council Directive 67/548/EEC as amended by Directive 83/467/EEC, Sep. 1983). Draize scores were calculated.
TOOL USED TO ASSESS SCORE:
- Immediately after the 24 hour observation, a solution of 2 % fluorescein in water (adjusted to pH 7.0) was instilled into both eyes of each animal to quantitatively determine corneal epithelial damage. This procedure was repeated in all three animals on days 4 and 8. Any bright green stained area, indicating epithelial damage, was estimated as a percentage of the total corneal area.
- In case standard lighting was considered inadequate for observing minor effects, eye examinations were performed using a pocket flash light.
- In case of equivocal results when comparing the treated and untreated eyes, the illustrated guide from the Consumer Product Safety Commission, Washington, DC 20207 was used for additional control purposes.
OBSERVATIONS:
- Viability/Mortality: Daily, animals were also examined for signs of toxicity.
- Body weight: Day 1 of test (application day).
- Symptoms: The eyes of each animal were examined approximately 1, 24, 48 and 72 hours and 7, 14 and 21 days after instillation of the test substance.
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0.66
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Remarks on result:
- other: average score for time points 24/48/72 h; area of cornea affected: max. score 2
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- > 0 - < 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Remarks on result:
- other: average score for time points 24/48/72 h Very slight corneal opacity, rated by study authors as score 0, but fluorescein positive 24 and 72 hours after instillation; area of cornea affected: max. score 2
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- > 0 - < 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Remarks on result:
- other: average score for time points 24/48/72 h Very slight corneal opacity, rated by study authors as score 0, but fluorescein positive 24 and 72 hours after instillation; area of cornea affected: max. score 3
- Irritation parameter:
- iris score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0.67
- Max. score:
- 2
- Reversibility:
- fully reversible within: 72 hours
- Remarks on result:
- other: average score for time points 24/48/72 h
- Irritation parameter:
- iris score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0.67
- Max. score:
- 2
- Reversibility:
- fully reversible within: 72 hours
- Remarks on result:
- other: average score for time points 24/48/72 h
- Irritation parameter:
- iris score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0.67
- Max. score:
- 2
- Reversibility:
- fully reversible within: 72 hours
- Remarks on result:
- other: average score for time points 24/48/72 h
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 3
- Max. score:
- 3
- Reversibility:
- fully reversible within: 21 days
- Remarks on result:
- other: average score for time points 24/48/72 h
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 3
- Max. score:
- 3
- Reversibility:
- fully reversible within: 21 days
- Remarks on result:
- other: average score for time points 24/48/72 h
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 3
- Max. score:
- 3
- Reversibility:
- fully reversible within: 21 days
- Remarks on result:
- other: average score for time points 24/48/72 h
- Irritation parameter:
- chemosis score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 2.33
- Max. score:
- 4
- Reversibility:
- fully reversible within: 21days
- Remarks on result:
- other: average score for time points 24/48/72 h
- Irritation parameter:
- chemosis score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 2.33
- Max. score:
- 4
- Reversibility:
- fully reversible within: 7 days
- Remarks on result:
- other: average score for time points 24/48/72 h
- Irritation parameter:
- chemosis score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 2.33
- Max. score:
- 4
- Reversibility:
- fully reversible within: 21 days
- Remarks on result:
- other: average score for time points 24/48/72 h
- Irritant / corrosive response data:
- Instillation of the substance resulted in reversible adverse effects on cornea, iris and conjunctivae in all three animals.
The opacity of the cornea was reversible within 7 days after exposure, the injection of the iris was reversible within 72 hours and the irritation of the conjunctivae was reversible within 21 days in all three animals.
There was no evidence of ocular corrosion.
No signs of systemic intoxication were observed during the study period. No animal died.
Any other information on results incl. tables
Table 1: 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 opacity |
Area of cornea affected |
Iris |
Conjunctivae |
Chemosis |
Discharge |
Max. score: 4 |
Max. score: 4 |
Max. score: 2 |
Max. score: 3 |
Max. score: 4 |
Max. score: 3 |
|
60 min |
01)/01)/01) |
1/1/1 |
1/1/1 |
1/1/1 |
3/2/3 |
0/0/0 |
24 h |
01)/01)/01) |
2/2/3 |
1/1/1 |
3/3/3 |
2/2/2 |
2/2/2 |
48 h |
1/01)/01) |
1/2/2 |
1/1/1 |
3/3/3 |
2/2/2 |
3/3/3 |
72 h |
1/01)/01) |
2/1/1 |
0/0/0 |
3/3/3 |
1/1/1 |
2/1/2 |
7 d |
0/0/0 |
0/0/0 |
0/0/0 |
2/3/2 |
0/0/0 |
1/0/1 |
14 d |
0/0/0 |
0/0/0 |
0/0/0 |
1/1/1 |
1/0/1 |
0/0/1 |
21 d |
0/0/0 |
0/0/0 |
0/0/0 |
0/0/0 |
0/0/0 |
0/0/0 |
Average 24h, 48h, 72h |
0.66/01)/01) |
1.67/1.67/2 |
0.67/0.67/0.67 |
3/3/3 |
2.33/2.33/2.33 |
2.33/2/2.33 |
Reversibility*) |
c/c/c |
c/c/c |
c/c/c |
c/c/c |
c/c/c |
c/c/c |
Average time (d) for reversion |
7/7/7 |
7/7/7 |
3/3/3 |
21/21/21 |
21/7/21 |
14/7/21 |
1) Very slight corneal opacity, rated by study authors as score 0. Treatment of the eyes with 2 % fluorescein, 24 and 72 hours after test substance instillation revealed corneal epithelial damage in all three animals.
*) Reversibility: c. = completely reversible; n.c. = not completely reversible; n. = not reversible
The test substance was considered moderately irritating to the rabbit eye by a Kay and Calandra interpretation (J. Society of Cosmetic Chemists, Vol. B no.6, 1962) of the calculated maximum Draize score of 22.7 (maximum possible score 110).
Applicant's summary and conclusion
- Interpretation of results:
- Category 2 (irritating to eyes) based on GHS criteria
- Remarks:
- Criteria used for interpretation of results: Regulation (EC) No 1272/2008 (EU GHS)
- Conclusions:
- According to the criteria for classification and labelling of Regulation (EC) No 1272/2008, the test substance should be labelled as Irritating to eyes (Category 2).
- Executive summary:
In a primary eye irritation study according to OECD Guideline No. 405, February 24, 1987 and EEC Directive 84/449/EEC, Part B.5, September 1984, 62 mg (0.1 mL) of substance "reaction mass of calcium hydrogen phosphonate and dialuminium tricalcium hexaoxide" (90 % a.i.) was instilled into the conjunctival sac of one eye of 3 young adult New Zealand white rabbits for 24 hours. Animals were observed for 21 days. Irritation was scored by the numerical scoring system according to Draize as given in the guidelines.
Instillation of the substance resulted in reversible adverse effects on cornea, iris and conjunctivae in all three animals.
The opacity of the cornea was reversible within 7 days after exposure, the injection of the iris was reversible within 72 hours and the irritation of the conjunctivae was reversible within 21 days in all three animals. There was no evidence of ocular corrosion.
In this study, substance "reaction mass of calcium hydrogen phosphonate and dialuminium tricalcium hexaoxide" (90 % a.i.) is an eye irritant.
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