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EC number: 209-136-7 | CAS number: 556-67-2
Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1995/08/21 - 1997/09/30
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 997
- Report date:
- 1997
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 405 (Acute Eye Irritation / Corrosion)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Octamethylcyclotetrasiloxane
- EC Number:
- 209-136-7
- EC Name:
- Octamethylcyclotetrasiloxane
- Cas Number:
- 556-67-2
- Molecular formula:
- C8H24O4Si4
- IUPAC Name:
- 2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetroxatetrasilocane
Constituent 1
Test animals / tissue source
- Species:
- rabbit
- Strain:
- New Zealand White
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- other: Untreated eye
- Duration of treatment / exposure:
- 24 hours
- Observation period (in vivo):
- 72 hours
- Number of animals or in vitro replicates:
- 3F
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:
- 4
- 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:
- 4
- 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:
- 4
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- iris score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 2
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- iris score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 2
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- iris score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 2
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- chemosis score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 4
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- chemosis score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 4
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- chemosis score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 4
- Remarks on result:
- no indication of irritation
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0.3
- Max. score:
- 3
- Remarks on result:
- other: Mean scores ranged from 0 to 0.3
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0.3
- Max. score:
- 3
- Remarks on result:
- other: Mean scores ranged from 0 to 0.3
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0.3
- Max. score:
- 3
- Remarks on result:
- other: Mean scores ranged from 0 to 0.3
- Irritation parameter:
- maximum mean total score (MMTS)
- Basis:
- mean
- Time point:
- other: 1h
- Score:
- 5.3
- Other effects:
- No deaths occurred during the study.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The test material was determined not irritating in a reliable study conducted according to an appropriate test protocol, and in compliance with GLP.
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