Sodium 9,10-dihydro-9,10-dioxoanthracene-2-sulphonate

Skin irritation / corrosion

Administrative data

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1986

Report date:

1986

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Principles of method if other than guideline:

To one male and two female rabbits about 0.5 ml of undiluted Luprintan TX 4493 (= Anthraquinone-2-sulfonic acid sodium salt) was applied for 4 hours to the upper third of the back or flanks. At the end of the exposure period the test substance was removed with lutrol and lutrol/water 1:1. Readings according to Draize were done 30-60 min after removal of the test patches and 24, 48 and 72 hours after the beginning of the application.

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

Sodium 9,10-dihydro-9,10-dioxoanthracene-2-sulphonate

EC Number:

205-009-5

EC Name:

Sodium 9,10-dihydro-9,10-dioxoanthracene-2-sulphonate

Cas Number:

131-08-8

Molecular formula:

C14H8O5S.Na

IUPAC Name:

sodium 9,10-dioxo-9,10-dihydroanthracene-2-sulfonate

Test animals

Species:

rabbit

Strain:

Vienna White

Details on test animals or test system and environmental conditions:

Animals species: Rabbit / White Vienna
Animal breeder: Gaukler, D-6050 Offenbach, FRG
Acclimatisation: At least 8 days before the beginning of the study
Type of cage: Stainless steel wire mesh walk floors (40 cm x 51 cm)
No. animals per cage: 1
Room temperature/ The animals were housed in fully air-conditioned rooms (20 - 24°C; relative humidity 30 - 70°C).
relative humidity
Day/night rhythm: 12 hours / 12 hours
Drinking water: About 250 ml tap water per animal per day
Diet: Kliba 341
Clipping of the fur: At least 15 hours before the beginning of the study

Test system

Type of coverage:

semiocclusive

Preparation of test site:

clipped

Vehicle:

unchanged (no vehicle)

Controls:

not required

Amount / concentration applied:

0.5 ml on a test patch (2.5 cm x 2.5 cm)

Duration of treatment / exposure:

4 hours

Observation period:

72 hours

Number of animals:

1 male and 2 females

Details on study design:

Exposure period: 4 hours
Number of animals: 1 male and 2 female rabbits
Mean weight: male: 3.00 kg; female: 3.05 kg
Application area: 2.5 cm x 2.5 cm
Form of application: unchanged
Application volume: wetting of the test patch (2.5 cm x 2.5 cm) with the undiluted substance, and thus about 0.5 ml of the test liquid was absorbed
Application site: upper third of the back or flanks
Removal of test substance: at the end of the exposure period with lutrol and lutrol/water (1:1)
Observation period: 72 hours
Readings: 30 - 60 minutes after removal of the test patches and 24, 48 and 72 hours after the beginning of the application
Negative control: untreated skin sites of the same animal

Results and discussion

In vivo

Results

Results 1

Irritation parameter:

erythema score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

4

Reversibility:

other: score = 0 at any time point

Results 2

Irritation parameter:

edema score

Basis:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

4

Reversibility:

other: score = 0 at any time point

Irritant / corrosive response data:

Erythema and edema score = 0 at any time point (24, 48 and 72 hours).

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

No erythema and no edema was found at any time point (24, 48 and 72 hours).

Executive summary:

To one male and two female rabbits about 0.5 ml of undiluted Luprintan TX 4493 (= Anthraquinone-2-sulfonic acid sodium salt) was applied  for 4 hours to the upper third of the back or flanks. At the end of the exposure period the test substance was removed with lutrol and lutrol/water 1:1. Readings according to Draize were done 30-60 min after removal of the test patches and 24, 48 and 72 hours after the beginning of the application. No erythema and no edema was found at 24, 48 and 72 hours. Therefore Luprintan TX 4493 (= Anthraquinone-2-sulfonic acid sodium salt) is not skin irritating.