sodium 5-amino-8-hydroxy-9,10-dioxo-6-(4-(tert-pentyl)phenoxy)-9,10-dihydroanthracene-2-sulfonate

Endpoint summary

Description of key information

Skin Irritation/Corrosion

Non irritant

Eye Irritation/Corrosion

Non irritant

Key value for chemical safety assessment

Skin irritation / corrosion

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not irritating)

Eye irritation

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not irritating)

Respiratory irritation

Endpoint conclusion

Endpoint conclusion:

no study available

Additional information

There are no experimental available data of the target substance about "Irritation/Corrosion", thus the information on the Similar Substance 01 was taken into account. Details on the substance similarity are reported in the document attached to the IUCLID section 13.

SKIN IRRITATION

The assessment for skin irritation was performed by two studies.

In the key study the substance was tested for skin rabbit according to the "Hazardous Substances Regulations" under the U.S. Federal Hazardous.Substances Labelling Act Sect. 191.11 (February 1965). Twenty-four hours prior to the dermal application, the backs of the rabbits were shaved over an area consisting of at least 10 % of the total body surface. Two test sites lateral to the midline of the back were used on each rabbit. The left hand site remained intact.

Slight erythema and very slight to slight oedema were seen in 4/6 and 5/6 rabbits respectively 24 hours after application of the compound. All sites were normal by 72 hours.

In the supporting study the substance shows no erythema and edema for intact skin, and very weak erythema and edema for abraded skin.

EYE IRRITATION

The substance has been tested for eye irritation according to "Hazardous Substances Regulations" under the U.S.A. Federal Hazardous Substances Labelling Act Sect. 191.12 (February 1965).

The eyes of the experimental animals were examined and found normal prior to the test. 100 mg of the test compound were instilled into the conjunctival sac of the left eye. The eyelids were then held closed for 1 second. The right eye served as a control. After 30 seconds the compound was, as far as possible, flushed out of the eyes of three of the rabbits with warm water for 1 minute. The rabbits were examined 1, 6, 24, 48 and 72 hours after application of the test compound and for any further period that was considered necessary. A slight to mild conjunctival reaction was seen in all treated eyes one hour after application of the compound. All eyes were normal by 48 hours (washed) and 72 hours (unwashed).

In a second study performed with a method not specified, the test substance shows a weakly irritating for rabbit eye. Considering that no details are available about the criteria used for classification, it is not possible to make any consideration about the classification of the test substance for this study.

Justification for classification or non-classification

SKIN IRRITATION/CORROSION

A corrosive substance is a substance that produces destruction of skin tissue, namely, visible necrosis through the epidermis and into the dermis, in at least 1 tested animal after exposure up to 4 hour duration.

Three subcategories are provided within corrosive category 1:

Subcategory 1A where responses are noted following up to 3 minutes exposure and up to 1 hour observation;

Subcategory 1B where responses are described following exposure between 3 minutes and 1 hour and observations up to 14 days;

Subcategory 1C where responses occur after exposures between 1 hour and 4 hours and observations up to 14 days

To classify a substance as irritant, the major criterion is that at least 2 of 3 tested animals have a mean score of ≥ 2,3 - ≤ 4,0.

Category 2:

- Mean value of ≥ 2,3 - ≤ 4,0 for erythema/ eschar or for oedema in at least 2 of 3 tested animals from gradings at 24, 48 and 72 hours after patch removal or, if reactions are delayed, from grades on 3 consecutive days after the onset of skin reactions; or

- Inflammation that persists to the end of the observation period normally 14 days in at least 2 animals, particularly taking into account alopecia (limited area), hyperkeratosis, hyperplasia, and scaling; or

- In some cases where there is pronounced variability of response among animals, with very definite positive effects related to chemical exposure in a single animal but less than the criteria above.

The substance is not classified a skin irritant because in the performed tests it doesn't meet the classification criteria of the CLP regulation n. 1272/2008.

EYE IRRITATION

Serious eye damage means the production of tissue damage in the eye, or serious physical decay of vision, following application of a test substance to the anterior surface of the eye, which is not fully reversible within 21 days of application.

Eye irritation means the production of changes in the eye following the application of test substance to the anterior surface of the eye, which are fully reversible within 21 days of application.

Irreversible effects on the eye (Category 1):

If, when applied to the eye of an animal, a substance produces:

- at least in one animal effects on the cornea, iris or conjunctiva that are not expected to reverse or have not fully reversed within an observation period of normally 21 days; and/ or

- at least in 2 of 3 tested animals, a positive response of corneal opacity ≥ 3 and/or iritis > 1,5 calculated as the mean scores following grading at 24, 48 and 72 hours after installation of the test material.

These observations include animals with grade 4 cornea lesions and other severe reactions (e.g., destruction of cornea) observed at any time during the test, as well as persistent corneal opacity, discoloration of the cornea by a dye substance, adhesion, pannus, and interference with the function of the iris or other effects that impair sight. In this context, persistent lesions are considered those which are not fully reversible within an observation period of normally 21 days. Substances are also classified in Category 1 if they fulfil the criteria of corneal opacity ≥ 3 or iritis > 1,5 detected in a Draize eye test with rabbits, recognising that such severe lesions usually do not reverse within a 21-day observation period.

The substance does not meet the requirements to be classified in Category 1.

Irritating to eyes (Category 2)

when applied to the eye of an animal, a substance produces:

- at least in 2 of 3 tested animals, a positive response of: corneal opacity ≥ 1 and/or iritis ≥ 1, and/or conjunctival redness ≥ 2 and/or conjunctival oedema (chemosis) ≥ 2

calculated as the mean scores following grading at 24, 48 and 72 hours after installation of the test material, and which fully reverses within an observation period of 21 days.

The substance does not meet the requirements to be classified.