2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(4-ethoxyphenyl)-3-oxobutyramide]

Eye irritation

Administrative data

Endpoint:

eye irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 29 JAN 1985 to 05 FEB 1985.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Guideline study (OECD TG 405).

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1985

Report date:

1985

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 405 (Acute Eye Irritation / Corrosion)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)

Deviations:

no

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-N-phenylbutyramide]

EC Number:

228-787-8

EC Name:

2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-oxo-N-phenylbutyramide]

Cas Number:

6358-85-6

IUPAC Name:

2,2'-[(3,3'-dichlorobiphenyl-4,4'-diyl)didiazene-2,1-diyl]bis(3-oxo-N-phenylbutanamide)

Test animals / tissue source

Species:

rabbit

Strain:

New Zealand White

Details on test animals or tissues and environmental conditions:

TEST ANIMALS
- Source: Hoechst AG, Kastengrund, conventional breeding
- Weight at study initiation: 2.9-3.7 kg
- Housing: individually
- Diet: Altromin 2123 husbandry diet - rabbit (Altromin, Lage/Lippe), ad libitum
- Water: deionised, chlorinated water, ad libitum

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20 +/- 3
- Humidity (%): 50 +/- 20
- Photoperiod (hrs dark / hrs light): 12 h / 12 h

Test system

Vehicle:

other: polyethylene glycol 400

Controls:

not required

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied: 100 mg pasted with 0.13 ml polyethylene glycol 400 (Ch-B 2322, Riedel-de Haen)

Duration of treatment / exposure:

24 h

Observation period (in vivo):

7 days

Number of animals or in vitro replicates:

3

Details on study design:

REMOVAL OF TEST SUBSTANCE
- Washing: with ca. 37 °C warm physiol. saline
- Time after start of exposure: 24 h

SCORING SYSTEM: according to OECD TG 405

TOOL USED TO ASSESS SCORE: fluorescein, UV-light

Results and discussion

In vivo

Results

Results 1

Irritation parameter:

cornea opacity score

Basis:

mean

Time point:

other: 24, 48, 72 h

Score:

0

Max. score:

4

Results 2

Irritation parameter:

iris score

Basis:

animal #1

Time point:

other: 24, 48, 72 h

Score:

0.33

Max. score:

2

Reversibility:

fully reversible

Remarks:

48 h after application.

Results 3

Irritation parameter:

iris score

Basis:

animal: #2, #3

Time point:

other: 24, 48, 72 h

Score:

0

Max. score:

2

Results 4

Irritation parameter:

conjunctivae score

Basis:

animal #1

Time point:

other: 24, 48, 72 h

Score:

2

Max. score:

3

Reversibility:

fully reversible

Remarks:

7 days after appl.

Remarks on result:

other: redness

Results 5

Irritation parameter:

conjunctivae score

Basis:

animal #2

Time point:

other: 24, 48, 72 h

Score:

1.67

Max. score:

3

Reversibility:

fully reversible

Remarks:

7 days after appl.

Remarks on result:

other: redness

Results 6

Irritation parameter:

conjunctivae score

Basis:

animal #3

Time point:

other: 24, 48, 72 h

Score:

1.33

Max. score:

3

Reversibility:

fully reversible

Remarks:

7 days after appl.

Remarks on result:

other: redness

Results 7

Irritation parameter:

chemosis score

Basis:

animal #1

Time point:

other: 24, 48, 72 h

Score:

1.33

Max. score:

4

Reversibility:

fully reversible

Remarks:

7 days after appl.

Results 8

Irritation parameter:

chemosis score

Basis:

animal #2

Time point:

other: 24, 48, 72 h

Score:

0.33

Max. score:

4

Reversibility:

fully reversible

Remarks:

48 h after appl.

Results 9

Irritation parameter:

chemosis score

Basis:

animal #3

Time point:

other: 24, 48, 72 h

Score:

1

Max. score:

4

Reversibility:

fully reversible

Remarks:

7 days after appl.

Irritant / corrosive response data:

One hour after application every animal showed chemosis score 2, conjunctival redness score 2 and iris score 1, animal #1 showed cornea score 1. No other corneal effects were observed during the study. 24 h after application animal #1 showed iris score 1. Iridial redness was observed in 3/3 animals one hour after application and in animal #1 24 h after application. No other iridial effects were observed. Conjunctival redness persisted in 3/3 animals with score 1 72 h after application and chemosis of score 1 was observed in 2/3 animals 72 h after application. 7 days after application no effects were observed.

Other effects:

Colourless discharge was observed one hour (3/3 animals), 24 h (3/3 animals), 48 h (2/3 animals) and 72 h (2/3 animals) after application.

Applicant's summary and conclusion

Interpretation of results:

not irritating

Remarks:

Migrated information Criteria used for interpretation of results: other: CLP regulation

Conclusions:

According to the classification criteria of Regulation (EC) No 1272/2008 the test item is not irritating to eyes under these test conditions. The test material contains relevant amounts of the submission substance. Therefore the test results are considered adequate to fulfil the endpoint requirements.

Executive summary:

The test item was subject to an Acute Eye Irritation/Corrosion Test in the rabbit according to OECD TG 405. Corneal opacity was observed only in 1/3 animals one hour after application, fully reversible within 24 hours. Iridial effects were noted in 3/3 animals up to 24 hours after application. Conjunctival redness and Chemosis were observed in 3/3 animals up to 72 hours after application, fully reversible by seven days. As the mean values of the observed eye responses fall below the critical values for classification according to the criteria of Regulation (EC) No 1272/2008, the test material is not irritating to eyes and has not to be classified for eye irritation.