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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
other information
Study period:
July 1994
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1994
Report date:
1994

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)

Test material

Constituent 1
Reference substance name:
rac-3-Methoxy-18-methyl-2,5(10)-estradien-17-one
IUPAC Name:
rac-3-Methoxy-18-methyl-2,5(10)-estradien-17-one

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White

Test system

Vehicle:
unchanged (no vehicle)
Controls:
other: the left eye, which remained untreated, served as control.
Amount / concentration applied:
0.1 g
Duration of treatment / exposure:
test substance remained in the eye (eye was not rinsed)
Observation period (in vivo):
4 days
Number of animals or in vitro replicates:
3 females

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
mean
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
4
Irritation parameter:
iris score
Basis:
mean
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
2
Irritation parameter:
conjunctivae score
Remarks:
reddening
Basis:
mean
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
3
Irritation parameter:
conjunctivae score
Remarks:
swelling
Basis:
mean
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
4

Any other information on results incl. tables

Table 1: Results of the study

    

 Irritant effects (score)         

Animal no. (sex)

 Irritation parameter

 24 h 48 h  72 h  Mean scores

 1 (F)

 Cornea

 0 0  0  0.0
 

 Iris

 0 0 0 0.0
 

 Conjunctiva (reddening)

 0 0 0 0.0
 

 Conjunctiva (swelling)

 0 0 0 0.0

 2 (F)

 Cornea

 0 0 0 0.0
   Iris 0 0 0 0.0
   Conjunctiva (reddening) 0 0 0 0.0
   Conjunctiva (swelling) 0 0 0 0.0

 3 (F)

  Cornea 0 0 0 0.0
   Iris 0 0 0 0.0
   Conjunctiva (reddening) 0 0 0 0.0
   Conjunctiva (swelling) 0 0 0 0.0

The control eyes were without findings.

Local findings in all animals after treatment with ZK 28519 on application day were transient slight to moderate secretions, predominantly slight reddenings and vessel injections on the conjunctivae and slight swellings on the conjunctivae (two animals).

 

Additionally, one animal showed slight swellings at the margin of the eyelid, reddening of the skin of the eyelid and incomplete eyelid closure. On day 2 all animals were without any findings.

Applicant's summary and conclusion

Executive summary:

In a local tolerance test on the rabbit eye similar to OECD TG 405 a single application of the test substance into the conjunctival sac provoked transient slight irritations on the application day. The mean values of findings relevant for classification at the time-points 24, 48 and 72 hours after application were 0 for the parameters cornea, iris, conjunctival reddening and conjunctival swelling. According to EU classification criteria ZK 28519 need not be labelled as an eye irritant.