Registration Dossier

Toxicological information

Eye irritation

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Administrative data

Endpoint:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report date:
2007

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Qualifier:
according to guideline
Guideline:
EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 870.2400 (Acute Eye Irritation)
GLP compliance:
yes (incl. QA statement)
Remarks:
Food and Consumer Product Safety Authority (VWA), Den Haag, The Netherlands

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
484-470-6
EC Name:
-
Cas Number:
623-40-5
Molecular formula:
C5H11NO
IUPAC Name:
N-pentan-2-ylidenehydroxylamine

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Source: Harlan, France
- Age at study initiation: at least 6 weeks
- Weight at study initiation: at least 1.0 kg
- Housing: individually
- Diet: ad libitum
- Water: ad libitum
- Acclimation period: at least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20 - 21.4
- Humidity (%): 42 - 70
- Air changes (per hr): 16
- Photoperiod (hrs dark / hrs light):12 hrs

Test system

Vehicle:
unchanged (no vehicle)
Controls:
other: one eye was untreated and served as the control
Amount / concentration applied:
TEST MATERIAL
- Amount(s) applied: 0.1 mL
- Concentration: 100%

Duration of treatment / exposure:
lids held together for 1 sec
Observation period (in vivo):
24, 48, and 72 hour, 7 days, and 14 days after exposure
Number of animals or in vitro replicates:
3
Details on study design:
REMOVAL OF TEST SUBSTANCE
- Washing (if done): not done

SCORING SYSTEM: Draize

TOOL USED TO ASSESS SCORE: fluorescein

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:
1
Max. score:
4
Reversibility:
fully reversible within: 7 days
Irritation parameter:
cornea opacity score
Basis:
animal #3
Time point:
24/48/72 h
Score:
1
Max. score:
4
Reversibility:
fully reversible within: 7 days
Irritation parameter:
iris score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0
Max. score:
2
Remarks on result:
other: iritis (score 1) observed 1 h after dosing; reversible within 24 h
Irritation parameter:
iris score
Basis:
animal #2
Time point:
24/48/72 h
Score:
0.67
Max. score:
2
Reversibility:
not fully reversible within: 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 h
Irritation parameter:
conjunctivae score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0.67
Max. score:
3
Reversibility:
fully reversible within: 48 h
Irritation parameter:
conjunctivae score
Basis:
animal #2
Time point:
24/48/72 h
Score:
2.33
Max. score:
3
Reversibility:
fully reversible within: 14 days
Irritation parameter:
conjunctivae score
Basis:
animal #3
Time point:
24/48/72 h
Score:
2
Max. score:
3
Reversibility:
fully reversible within: 14 days
Irritation parameter:
chemosis score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0.33
Max. score:
4
Reversibility:
fully reversible within: 48 h
Irritation parameter:
chemosis score
Basis:
animal #2
Time point:
24/48/72 h
Score:
1.33
Max. score:
4
Reversibility:
fully reversible within: 7 days
Irritation parameter:
chemosis score
Basis:
animal #3
Time point:
24/48/72 h
Score:
1.3
Max. score:
4
Reversibility:
fully reversible within: 7 days
Other effects:
No clinical signs of toxicity noted

Applicant's summary and conclusion

Interpretation of results:
other: Eye Irritation Cat. 2 (H319) according to Regulation (EC) No 1272/2008
Conclusions:
2-PO (MPKO) is irritating to rabbit eyes.