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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
Study period:
Apr 1987
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study with restricted reporting.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1987
Report date:
1987

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
Deviations:
no
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
potassium diethyl octylphosphonate ethyl octylphosphonate
EC Number:
939-595-5
IUPAC Name:
potassium diethyl octylphosphonate ethyl octylphosphonate
Test material form:
other: liquid

Test animals / tissue source

Species:
rabbit
Strain:
other: New Zealand
Details on test animals or tissues and environmental conditions:
body weight: 2380 - 2980 g

Test system

Vehicle:
unchanged (no vehicle)
Controls:
not required
Amount / concentration applied:
0.1 mL
Duration of treatment / exposure:
24 h
Observation period (in vivo):
1 hour post application
24 hours post application
48 hours post application
72 hours post application
7 days post application
Number of animals or in vitro replicates:
3
Details on study design:
The eyes were examined 1, 24, 48 and 72 hours and 7 days after application of the test substance.
24 hours after treatment the eyes were washed out.

SCORING SYSTEM:

A. CORNEA
Degree of opacity (most dense area used)
No opacity ...................................................................................................................0
Scattered or diffuse areas, details of iris clearly visible........................................1
Easily discernible translucent areas, details of iris slightly obscured................2
Opalescent areas, no details of iris visible , size of pupil barely discernible ....3
Opaque, iris invisible, ulzeration ..............................................................................4


IRIS
Normal ......................................................................................................................... 0
Folds above normal , congestion, swelling, circumcorneal injection (any of all of these or combination of any thereof); iris still reacting to light
(sluggish reaction is positive) ......................... .........................................................1
No reaction to light, haemorrhage, gross destruction (any or all of these) ......2


CONJUNCTIVAE

A. Redness
Blood vessels normal...............................................................................................................0
Blood vessels definitely injected above normal ................................................................. 1
More diffuse, deeper crimson red, individual blood vessels not easily discernible .....2
Diffuse beefy red......................................................................................................................3

B. Chemosis (refers to palpebral and bulbar conjunctivae)
No swelling .........................................................................................0
Any swelling above normal (includes nictitating membran) ..... 1
Obvious swelling with partial eversion of l i d s ...........................2
Swelling with lids about half closed ................................................3
Swelling with lids half closed to completely closed.......................4

C. Secretion
No secretion......................................................................................................................0
Any secretion above normal...........................................................................................1
Secretion with wetting of palpebra and hair close to palpebra.................................2
Secretion with wetting of palpebra, hair and considerable area around eyes........3

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
animal #1
Time point:
other: 24, 48, 72 h
Score:
2
Max. score:
4
Reversibility:
not fully reversible within: 7 days
Irritation parameter:
cornea opacity score
Basis:
animal #2
Time point:
other: 24, 48, 72 h
Score:
2.7
Max. score:
4
Reversibility:
not fully reversible within:
Remarks on result:
other: 7 days
Irritation parameter:
cornea opacity score
Basis:
animal #3
Time point:
other: 24, 48, 72 h
Score:
2.7
Max. score:
4
Reversibility:
not fully reversible within: 7 days
Irritation parameter:
iris score
Basis:
animal #1
Time point:
other: 24, 48, 72 h
Score:
1
Max. score:
2
Reversibility:
not reversible
Remarks on result:
other: examination not possible due to corneal opacity on day 7
Irritation parameter:
iris score
Basis:
animal #2
Time point:
other: 24, 48, 72 h
Score:
1
Max. score:
2
Reversibility:
not fully reversible within: 7 days
Irritation parameter:
iris score
Basis:
animal #3
Time point:
other: 24, 48, 72 h
Score:
1
Max. score:
2
Reversibility:
not reversible
Remarks on result:
other: examination not possible due to corneal opacity on day 7
Irritation parameter:
conjunctivae score
Basis:
animal #1
Time point:
other: 24, 48, 72 h
Score:
2.7
Max. score:
3
Reversibility:
not fully reversible within: 7 days
Irritation parameter:
conjunctivae score
Basis:
animal #2
Time point:
other: 24, 48, 72 h
Score:
3
Max. score:
3
Reversibility:
not fully reversible within: 7 days
Irritation parameter:
conjunctivae score
Basis:
animal #3
Time point:
other: 24, 48, 72 h
Score:
3
Max. score:
3
Reversibility:
not fully reversible within: 7 days
Irritation parameter:
chemosis score
Basis:
animal #1
Time point:
other: 24, 48, 72 h
Score:
2.7
Max. score:
4
Reversibility:
not fully reversible within: 7 days
Irritation parameter:
chemosis score
Basis:
animal #2
Time point:
other: 24, 48, 72 h
Score:
4
Max. score:
4
Reversibility:
not fully reversible within: 7 days
Irritation parameter:
chemosis score
Basis:
animal #3
Time point:
other: 24, 48, 72 h
Score:
4
Max. score:
4
Reversibility:
not fully reversible within: 7 days

Applicant's summary and conclusion

Interpretation of results:
corrosive
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
With reference the reported scores and the irreversibility of the observed effects Reaction mass of potassium ethyl octylphosphonate and diethyl octylphosphonate has to be classified as irritant to the eyes (H 318: Causes serious eye damage) according to the criteria laid down in the EU Dangerous Substances Directive (67/548/EEC) and in the EU Classification Labelling and Packaging Regulation (1272/2008/EC).
Executive summary:

Reaction mass of potassium ethyl octyl phosphonate was tested for its eye irritant properties in 3 New Zealand rabbits.The study was performed according to OECD Guideline 405. Effects on conjunctivae (redness and swelling), iris and cornea were observed in all animals one hour after application. These signs were not reversible within 7 days.

With reference the reported scores and the irreversibility of the observed effects Reaction mass of potassium ethyl octylphosphonate and diethyl octylphosphonate has to be classified as irritant to the eyes (H 318: Causes serious eye damage) according to the criteria laid down in the EU Dangerous Substances Directive (67/548/EEC) and in the EU Classification Labelling and Packaging Regulation (1272/2008/EC).