1,2,3-Propanetriol, homopolymer

Eye irritation

Administrative data

Endpoint:

eye irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1989-06-06 to 1989-06-09

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Guideline study performed according to GLP principles

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1989

Report date:

1989

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:

other: Guideline No 84/449/EWG of 25 April 1984, B.5.

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

Diglycerin

IUPAC Name:

Diglycerin

Constituent 2

Reference substance name:

1,2,3-Propanetriol, homopolymer

EC Number:

607-759-2

Cas Number:

25618-55-7

Molecular formula:

(C3 H8 O3)x

IUPAC Name:

1,2,3-Propanetriol, homopolymer

Test material form:

liquid: viscous

Details on test material:

- Name of test material (as cited in study report): Diglycerin
- Physical state: liquid

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 breed
- Age at study initiation: ca. 3-5 months
- Weight at study initiation: ca. 2,7-3,0 kg
- Housing: fully climatized rooms, single cages
- Diet (e.g. ad libitum): Altromin 2123, Altromin GmbH, Lage/Lippe ad libitum;
- Water (e.g. ad libitum): water ad libitum

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

Test system

Vehicle:

unchanged (no vehicle)

Controls:

yes, concurrent no treatment

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.1 mL

Duration of treatment / exposure:

24 hours

Observation period (in vivo):

1 hour post application
24 hours post application
48 hours post application
72 hours post application

Number of animals or in vitro replicates:

3

Details on study design:

The eyes were examined 1, 24, 48 and 72 hours after application of the test substance.
24 hours after treatment the eyes were washed out with physological saline.
At 24 and 72 hours the eyes were also examined after instillation of one drop of 0.01 % fluorescein-sodium solution.

SCORING SYSTEM:

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

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

Chemosi s
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

Results and discussion

In vivo

Results

Irritation parameter:

overall irritation score

Basis:

mean

Time point:

other: 24, 48 and 72 hours

Score:

0

Max. score:

0

Reversibility:

fully reversible

Irritant / corrosive response data:

One hour after the treatment, diffuse reddening of the conjunctivae and reddening of the iris was noted in all animals. Furthermore, slight swelling of the conjunctiva was observed and slight discharge was noted in the treated eyes of all animals.
At the 24-hour reading, no abnormal findings were observed (reversibility of all signs of irritation).

Other effects:

No mortality occurred.
No clinical signs were observed during the course of the study.
The body weights of all rabbits were considered to be within the normal range of variability.
No necropsy was performed at the end of the study.

Applicant's summary and conclusion

Interpretation of results:

not irritating

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

With reference to the reported scores and observations the test itemdoes not need to be classified as irritant to the rabbit eye 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:

The primary eye irritation potential of the test item was investigated according to OECD test guideline no. 405. The test item was applied by instillation of 0.1 mL into the left eye of each of three New Zealand White rabbits. Scoring of irritation effects was performed approximately 1, 24, 48 and 72 hours after test item instillation.

The mean score was calculated across 3 scoring times (24, 48 and 72 hours after instillation) for each animal for corneal opacity, iris, redness and chemosis of the conjunctivae, separately. All individual mean scores were 0.00 for all three animals.

The instillation of test item into the eye resulted in mild, early-onset and transient ocular changes, such as reddening of the conjunctivae, discharge and chemosis, which were mostly present at the 1-hour reading. 24 hours after the treatment, no signs of eye irritation were observed in the conjunctivae of the animals. Furthermore, no abnormal findings were observed in the cornea or iris of any animal at any of the examinations. No corrosion was observed at any of the measuring intervals. No staining of the treated eyes by the test item was observed and no clinical signs were observed.

Thus, the test item did not induce significant or irreversible damage to the rabbit eye.

With reference to the reported scores and observations the test item does not need to be classified as irritant to the rabbit eye 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).