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Administrative data

Description of key information

No adverse effects observed.

Key value for chemical safety assessment

Acute toxicity: via oral route

Link to relevant study records

Referenceopen allclose all

Endpoint:
acute toxicity: oral
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Justification for type of information:
For this endpoint a one-to-one read across was performed to a chemical similar compound of the same chemical class with a comparable phys. chem. profile and similar response in biological assays. The relevant study was performed according to GLP and the methods applied are fully compliant with OECD TG 423. Regarding a full documentation we kindly refer to the pdf document provided in Chapter 13 of this dossier.
Reason / purpose for cross-reference:
read-across source
Key result
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Based on:
test mat.
Interpretation of results:
GHS criteria not met
Conclusions:
For this endpoint a one-to-one read across was performed to a chemical similar compound of the same chemical class with a comparable phys. chem. profile and similar response in biological assays. The relevant study was performed according to GLP and the methods applied are fully compliant with OECD TG 423. The result obtained for the read across from the source compound was LD50 > 2000 mg/kg bw.
Endpoint:
acute toxicity: oral
Type of information:
experimental study
Adequacy of study:
key study
Study period:
October 16, 2011 - February 03, 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method B.1 (Acute Toxicity (Oral))
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Test type:
acute toxic class method
Limit test:
yes
Specific details on test material used for the study:
Batch: OS11008922
Vehicle
Aqueous Methocel® K4M Premium solution was used as the vehicle.

Batch: DT170406
Released until: May 08, 2016
Batch (ZDP): 35/11 and 37/11
Released until (ZDP): October 21 and November 04, 2011


TREATMENT OF TEST MATERIAL PRIOR TO TESTING
Directly before the administration the test material was prepared with aqueous Methocel® K4M Premium solution as the vehicle using an Ultra-Turrax device.
Species:
rat
Strain:
Wistar
Sex:
female
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: Charles River Wiga GmbH, Sulzfeld, Germany
- Females (if applicable) nulliparous and non-pregnant: yes
- Age at start of study: 9 weeks (f), 10 weeks (m)
- Weight at study initiation: 155 - 165g
- Fasting period before study: 17 hours before until up to 4 hours after treatment
- Housing: separately in type III Makrolon cages
- Diet: ad libitum
- Water: ad libitum
- Acclimation period: at least 7 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21 - 23°C
- Humidity (%): 51-75 %
- Photoperiod (hrs dark / hrs light): 12 hour light - 12 hour dark regime

IN-LIFE DATES: From: day 1 To: day 15
Route of administration:
oral: gavage
Vehicle:
methylcellulose
Remarks:
Methocel K4M Premium solution
Details on oral exposure:
VEHICLE
- Concentration in vehicle: 200 g/L
- Amount of vehicle (if gavage): 10 mL/kg
- Justification for choice of vehicle: well tolerated and established standard vehicle

Doses:
2000 mg/kg bw
No. of animals per sex per dose:
3 (f) / 3 (m)
Control animals:
no
Details on study design:
- Duration of observation period following administration: 14 days
- Frequency of observations: daily
- Frequency of weighing: day 1, 2, 4, 6, 8, 11, 13 and 15
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight, gross pathology
Statistics:
Standard statistical methods have been applied for data processing.
Key result
Sex:
female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Based on:
test mat.
Remarks on result:
not determinable due to absence of adverse toxic effects
Mortality:
All rats survived the observation period.
Clinical signs:
No clinical signs of toxicity were observed.
Body weight:
The body weight development of the rats was inconspicuous during the study.
Gross pathology:
The gross pathological examination revealed no organ alterations.
Interpretation of results:
GHS criteria not met
Conclusions:
The test item has no acute toxic potential under the conditions of the present study, and the LD50 value is higher than 2000 mg/kg bw after single oral administration in female rats.
Executive summary:

Objective


The objective of the present study was to identify potential toxic effects of the test item after single oral administration of 2000 mg/kg body weight to rats.


 


Study Design


This study was performed according to GLP and the methods applied are fully compliant with OECD TG 423. For this assay a starting dose of 2000 mg/kg body weight was selected.


Mortality and clinical signs were monitored for at least 6 hours after administration and then daily. All animals were weighed before treatment (day 1) and on days 2, 4, 6, 8, 11, 13, and 15. At the end of the observation period, all surviving rats were sacrificed and subjected to a detailed necropsy.


 


Results


No mortality occurred during the course of this study.
No clinical signs of toxicity were observed.


The body weight development was inconspicuous throughout the study.
The gross pathological examination revealed no organ alterations.


 


Conclusion


The test item has no acute toxic potential under the conditions of the present study, and the LD50 value is higher than 2000 mg/kg after single oral administration in female rats.

Endpoint conclusion
Endpoint conclusion:
no adverse effect observed
Dose descriptor:
LD50
Value:
> 2 000 mg/kg bw

Acute toxicity: via inhalation route

Endpoint conclusion
Endpoint conclusion:
no study available

Acute toxicity: via dermal route

Endpoint conclusion
Endpoint conclusion:
no study available

Additional information

For this endpoint a one-to-one read across was performed to a chemical similar compound of the same chemical class with a comparable phys. chem. profile and similar response in biological assays. The relevant study was performed according to GLP and the methods applied are fully compliant with OECD TG 423. The result obtained for the read across from the source compound was LD50 > 2000 mg/kg bw.

Justification for classification or non-classification