Sulfonation products of dipotassium sulfite with (esterification products of C9-11 (branched and linear) Alkyl Polyglycosides with maleic anhydride)

Acute Toxicity: dermal

Administrative data

Endpoint:

acute toxicity: dermal

Type of information:

migrated information: read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Study period:

April 12 - 27, 2011

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Eucarol AGE 91/S ( Sulfonation products of (esterification products of C9-11 (branched and linear) alkyl-(mono-, di- and tri-)glycosides with maleic anhydride) with disodium sulfite ) was used as supporting substance due to the structural analogy. It can be expected a similar structural features.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

Report date:

2011

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 402 (Acute Dermal Toxicity)

Test guideline 2

Qualifier:

according to guideline

Guideline:

EPA OPPTS 870.1200 (Acute Dermal Toxicity)

Test guideline 3

Qualifier:

according to guideline

Guideline:

other: EC 440/2008

Principles of method if other than guideline:

Commission Regulation (EC) No 440/2008, L 142, Annex Part B of 30 May 2008 laying down test methods pursuant to Regulation (EC) No. 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH)

GLP compliance:

yes (incl. QA statement)

Test type:

standard acute method

Limit test:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Sulfonation products of (esterification products of C9-11 (branched and linear) alkyl-(mono-, di- and tri-)glycosides with maleic anhydride) with disodium sulfite

IUPAC Name:

Sulfonation products of (esterification products of C9-11 (branched and linear) alkyl-(mono-, di- and tri-)glycosides with maleic anhydride) with disodium sulfite

Constituent 2

Reference substance name:

700-855-6

EC Number:

700-855-6

IUPAC Name:

700-855-6

Details on test material:

Batch No.: PIC 484
CAS No.: 1228577-41-0
Colour: Yellow
Physical State: Liquid (50% in water)
Purity: 50% (in water)
Expiry Date: October 2012
Storage Conditions: at room temperature, protected from light

Test animals

Species:

rat

Strain:

Wistar

Sex:

male/female

Details on test animals or test system and environmental conditions:

Species/strain: healthy rats, WISTAR rats Crl: WI(Han) (full barrier)
Source: Charles River, 97633 Sulzfeld, Germany
Sex: male and female (non-pregnant and nulliparous).
Number of animals: 5 male and 5 female
Age at the beginning of the study: males: 8 weeks old; females: 11 weeks old
Body weight on the day of administration: males: 225 – 250 g; females: 210 – 233 g
The animals were derived from a controlled full-barrier maintained breeding system (SPF).

Housing and Feeding Conditions
- Full barrier in an air-conditioned room
- Temperature: 22 ± 3 °C
- Relative humidity: 55 ± 10%
- Artificial light, sequence being 12 hours light, 12 hours dark
- Air change: 10 x / hour
- Free access to Altromin 1324 maintenance diet for rats and mice (lot no. 1307)
- Free access to tap water, sulphur acidified to a pH value of approximately 2.8 (drinking water, municipal residue control, microbiological controls at regular intervals)
- The animals were kept individually in IVC cages, type III H, polysulphone cages on Altromin saw fibre bedding (lot no. 24/11/2010)
- Adequate acclimatisation period (at least five days)

Approximately 24.5 hours before the test, the fur was removed from the dorsal area of the trunk by using an electric clipper. Care was taken to avoid abrading the skin, and only animals with healthy intact skin were used.
No less than 10% of the body surface was cleared for the application.

Administration / exposure

Vehicle:

unchanged (no vehicle)

Details on dermal exposure:

The test item was applied at a single dose, uniformly over an area which was approximately 10% of the total body surface.
The test item was held in contact with the skin by a dressing throughout a 24-hour period. The dressing consisted of a gauze-dressing and non-irritating tape and was fixed with an additional dressing in a suitable manner.
At the end of the exposure period the residual test item was removed by using aqua ad injectionem.

Duration of exposure:

24 hours

Doses:

2000 mg/kg
The active component of the test item is diluted in water (50 %); to assure the dose of 2000 mg/kg a correction factor of 2 was considered for preparation of the dressing with the test item, which has been consequently applied at a dose of 4000 mg/kg body weight.

No. of animals per sex per dose:

5

Details on study design:

All animals were observed for 14 days after dosing.

Results and discussion

Effect levels

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

act. ingr.

Mortality:

No mortality

Clinical signs:

other: No treatment-related effects were observed

Gross pathology:

No treatment-related effects were observed

Other findings:

No erythema or oedema was observed. Desquamation was observed in 1 out of 5 female animals.
Eschar was observed in 5 out of 5 male and 4 out of 5 female animals. Scratches were observed in 3 out of 5 male animals.
All signs of irritation were reversible within the observation period.

Applicant's summary and conclusion

Interpretation of results:

not classified

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

Under the conditions of the present study, single dermal application of the test item to rats at a dose of 2000 mg/kg body weight (based on the active components) was associated with no mortality and neither signs of toxicity but minor signs of irritation.
The dermal LD50 was determined to be > 2000 mg/kg body weight (based on the active components).

Executive summary:

Under the conditions of the present study, single dermal application of the test item to rats at a dose of 2000 mg/kg body weight (based on the active components) was associated with no mortality and neither signs of toxicity but minor signs of irritation.

The dermal LD50 was determined to be > 2000 mg/kg body weight (based on the active components).