Carbohydrates and Sugars, hexitols, anhydro

Acute Toxicity: dermal

Administrative data

Endpoint:

acute toxicity: dermal

Type of information:

experimental study

Adequacy of study:

key study

Study period:

July 31, 2014

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2014

Report date:

2014

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 402 (Acute Dermal Toxicity)

Deviations:

no

GLP compliance:

yes

Test type:

fixed dose procedure

Limit test:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Carbohydrates and Sugars, hexitols, anhydro

EC Number:

309-665-4

EC Name:

Carbohydrates and Sugars, hexitols, anhydro

Cas Number:

100683-96-3

IUPAC Name:

2-(1,2-dihydroxyethyl)oxolane-3,4-diol; hexahydrofuro[3,2-b]furan-3,6-diol

Test material form:

other: liquid

Test animals

Species:

rat

Strain:

Wistar

Sex:

male/female

Details on test animals or test system and environmental conditions:

-Details on animals
Number of animals: 5 animals/sex
Sex: Male and female, female rat were nulliparous and non-pregnant.
Age of animals at dosing: Young healthy adult rats
Body weight at treatment: 220 – 251 g
Acclimatization period: at least 6 days

- Diet: Animals received ssniff® SM R/M "Autoclavable complete diet for rats and mice – breeding and maintenance" produced by ssniff Spezialdiäten GmbH, D-59494 Soest Germany (Batch no.: 186 0298, expiry date: May 2014) ad libitum. The food is considered not to contain any contaminants that could reasonably be expected to affect the purpose or integrity of the study
- Water: Animals received tap water from the municipal supply, as for human consumption from a 500 ml bottle, ad libitum. Water quality control analysis is performed once every three months and microbiological assessment is performed monthly, by Veszprém County Institute of State Public Health and Medical Officer Service (ÁNTSZ, H-8201 Veszprém, József A.u.36., Hungary). The quality control results are retained in the archives at CiToxLAB Hungary Ltd.
- IN-LIFE DATES:
Experimental starting date: 14 May 2014
Experimental Completion date: 28 May 2014
Reception of Animals 08 May 2014
Treatment 14 May 2014 (Males no.: 6937, 6938, 6939, 6940, 6941), (Females no.: 6942, 6943, 6944, 6945, 6946)
Observation 14 – 28 May 2014, (Males no.: 6937, 6938, 6939, 6940, 6941) (Females no.: 6942, 6943, 6944, 6945, 6946)
Necropsy 28 May 2014 (Males no.: 6937, 6938, 6939, 6940, 6941) (Females no.: 6942, 6943, 6944, 6945, 6946)

- Husbandry
Animal health: Only healthy animals were used for the test. The veterinarian certified health status.
Housing: Individual caging
Cage type: Type II polypropylene/polycarbonate
Bedding: Lignocel Bedding for Laboratory Animals and Cotton Rolls (Supplement to Ani Pet Bedding) were available to animals during the study.
Lighting period: 12 hours daily, from 6.00 a.m. to 6.00 p.m.
Temperature: 21.4 – 25.0 °C
Relative humidity: 35 – 62 %
Ventilation: 15 – 20 air exchanges/hour
Enrichment:Rodents were housed with deep wood sawdust bedding to allow digging and other normal rodent activities.
The temperature and relative humidity were recorded twice daily during the study.

Administration / exposure

Type of coverage:

semiocclusive

Vehicle:

unchanged (no vehicle)

Details on dermal exposure:

The test item was administered as a single dose without using any vehicle. The test item was placed onto a gauze pad.
The back of each animal was shaved (approximately 10 % area of the total body surface) approximately 24 hours prior to treatment. The test item was applied as a single dose as supplied to the shaved skin and remained in contact with the skin for the 24-hour exposure period. Sterile gauze pads were placed on the skin of rats to cover the test item. These gauze pads were kept in contact with the skin by a patch with adhesive hypoallergenic plaster. The entire trunk of the animal was then wrapped with semi occlusive plastic wrap for 24 hours.
At the end of the exposure period, the area of skin treated with the test item was washed with water of body temperature.

Duration of exposure:

24h

Doses:

The test item was not expected to be lethal at 2000 mg/kg bw. A limit test was therefore performed.

No. of animals per sex per dose:

5

Control animals:

not required

Details on study design:

A single administration was performed by the dermal route and was followed by a fourteen-day observation period.
5 males (cages 1-5) and 5 females (cages 6-10) received 2000 mg/kg bw of test subtance.
Clinical observations were performed on the day of treatment at 1 and 5 hours after application of the test item and once each day for 14 days thereafter. Observations included the skin and fur, eyes and mucous membranes, the respiratory, circulatory, autonomic and central nervous system, somatomotor activity and behaviour pattern. Particular attention was directed to observation of tremors, convulsions, salivation, diarrhoea, lethargy, sleep and coma.
Adverse skin reactions at the site of application were recorded daily following the removal of the dressing.
The body weights were recorded on Day 0 (before test item administration) and on Days 7 and 14 just before necropsy.
Macroscopic examination was performed on all animals. All animals were anaesthetised with Euthasol® 40 % (details in 3.1.3.) and exsanguinated. After examination of the external appearance, the cranial, thoracic and abdominal cavities were opened and the appearance of the tissues and organs was observed. All macroscopic changes were recorded.
The method used was not intended to allow the calculation of a precise LD50 value.
The test item was ranked into categories of Globally Harmonized Classification System (GHS (rev 5.) 2013).

Statistics:

no

Results and discussion

Effect levels

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

The test item did not cause mortality at the dose level of 2000 mg/kg bw.

Clinical signs:

No clinical signs were observed after the treatment with the test item during the 14 day observation period.

Body weight:

There were no effects on bodyweight in any animal during the study.

Gross pathology:

No macroscopic findings were observed.

Other findings:

No dermal signs were observed after treatment with the test item during the 14 day observation period.

Any other information on results incl. tables

CLINICAL OBSERVATIONS

SEX: MALE

Cage No.

Animal No.

observations

Observation days

Frequency

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1h

5h

1

6937

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

2

6938

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

3

6939

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

4

6940

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

5

6941

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

 

SEX: FEMALE

Cage No.

Animal No.

observations

Observation days

Frequency

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1h

5h

1

6942

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

2

6943

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

3

6944

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

4

6945

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

5

6946

Symptom free

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

+

16/16

 

Treatment day = Day 0

+ = present

h = hour (s)

Frequency of observation = number of occurence of observation / total number of observations

BODY WEIGHT DATA

SEX: MALE

Cage No.	Animal No.	Body weight (g) Days			Body weight gain (g) Days
		0	7	14	0-7	7-14	0-14
1	6937	233	283	333	50	50	100
2	6938	231	293	331	62	38	100
3	6939	228	270	315	42	45	87
4	6940	220	267	318	47	51	98
5	6941	238	292	332	54	40	94
Mean		230.0	281.0	325.8	51.0	44.8	95.8
Standard deviation		6.7	12.1	8.6	7.5	5.8	5.5

 

SEX: FEMALE

Cage No.	Animal No.	Body weight (g) Days			Body weight gain (g) Days
		0	7	14	0-7	7-14	0-14
1	6942	246	249	268	3	19	22
2	6943	242	253	254	11	1	12
3	6944	234	246	250	12	4	16
4	6945	251	252	264	1	12	13
5	6946	231	240	252	9	12	21
Mean		240.8	248.0	257.6	7.2	9.6	16.8
Standard deviation		8.3	5.2	7.9	4.9	7.2	4.5

 

 

Applicant's summary and conclusion

Interpretation of results:

not classified

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

The acute dermal median lethal dose (LD50) of the test item Carbohydrates and Sugars, hexitols, anhydro - LAB 4623 was found to be greater than 2000 mg/kg body weight in male and female CRL:(WI) rats.
According to the Globally Harmonized System of Classification and Labelling of Chemicals and to CLP-Regulation (EC) No. 1272/2008, Carbohydrates and Sugars, hexitols, anhydro - LAB 4623 is ranked respectively as "Category 5" or "Unclassified" for acute dermal exposure.

Executive summary:

An acute dermal toxicity study was performed with test item Carbohydrates and Sugars, hexitols, anhydro - LAB 4623 in CRL:(WI) rats, in compliance with OECD Guideline No.: 402.

A limit test was carried out at 2000 mg/kg body weight (bw) in both sexes (5 rats/sex). The test item was applied as supplied as a single dermal 24-hour exposure followed by a 14-day observation period.

Clinical observations were performed on all animals at 1 and 5 hours after dosing and daily for 14 days thereafter. Body weight was measured prior to dosing on Day 0 and on Days 7 and 14. Gross macroscopic examination was performed on all animals at the end of the 2-week observation period (Day 14).

Test item did not cause mortality at dose level of 2000 mg/kg bw. No clinical signs were observed after the treatment with the test item during the 14-day observation period. No dermal signs were observed after treatment with the test item during the 14-day observation period. There were no effects on bodyweight in any animal during the study. No macroscopic findings were observed.

The acute dermal median lethal dose (LD50) of the test item Carbohydrates and Sugars, hexitols, anhydro - LAB 4623 was found to be greater than 2000 mg/kg body weight in male and female CRL:(WI) rats.