[No public or meaningful name is available]

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

15 March 2017 - 31 March 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.1 tris (Acute Oral Toxicity - Acute Toxic Class Method)

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 870.1100 (Acute Oral Toxicity)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

issue 3 november 2015

Test type:

acute toxic class method

Limit test:

no

Test material

Test material information

Constituent 1

Test material form:

liquid: viscous

Details on test material:

batch number: 616F-2072 (NBK-003072-796)

Test animals

Species:

rat

Strain:

other: Crl:WI (Han)

Sex:

female

Details on test animals or test system and environmental conditions:

Source: Charles River Deutschland, Sulzfeld, Germany
Age at the Initiation of Dosing: Young adult animals (approximately 8 weeks old)
Weight at the Initiation of Dosing: 144 to 176 g
Fasting period before study: Animals were deprived of food overnight (for a maximum of 20 hours) prior to dosing and until 3-4 hours after administration of the test item. Water was available
Housing: Group housing up to 5 animals of the same sex and same dosing group together in polycarbonate cages (Makrolon MIV type; height 18 cm)
Diet: Free access to pelleted rodent diet (SM R/M-Z from SSNIFF® Spezialdiäten GmbH, Soest, Germany)
Water: Free access to municipal tap-water
Acclimation period: At least 5 days

ENVIRONMENTAL CONDITIONS:
Temperature (°C): 18 - 24
Humidity (%): 40 - 70
Air changes (per hr): 10 or more
Photoperiod (hrs dark / hrs light): 12 / 12

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

propylene glycol

Details on oral exposure:

Gavage method: Plastic gavage cannula
Frequency: Single dosage, on day 1
Maximum Dose Volume Applied: 2000 mg/kg body weight. A dose volume of 10 mL/kg body weight was used for each dose
Dosage preparation: The dosing formulations were heated for a maximum of 30 minutes at a maximum temperature of 75.1°C in order to obtain a homogenous formulation The dosing formulations were kept at room temperature until dosing. The dosing formulations and vehicle were stirred until and during dosing

Doses:

2000 mg/kg body weight

No. of animals per sex per dose:

2 x 3 animals at dose 2000 mg/kg body weight

Control animals:

no

Details on study design:

The toxicity of the test item was assessed by stepwise treatment of groups of 3 females. The absence or presence of mortality of animals dosed at one step determined the next step, based on the test procedure defined in the guidelines. The onset, duration and severity of the signs of toxicity were taken into account for determination of the time interval between the dose groups. The first group was treated at a dose level of 2000 mg/kg. Based on the results, one additional group was dosed at 2000 mg/kg

Duration of observation following administration: 14 days
Frequency of observation of Mortality / Viabillity: Twice daily
Frequency of observation of body weight: Days 1 (pre-administration), 8 and 15
Clinical signs: At periodic intervals on the day of dosing (Day 1) and once daily thereafter, until Day 15
Necropsy of survivors performed: All moribund animals and animals surviving to the end of the observation period were sacrificed by oxygen/carbon dioxide procedure. All animals assigned to the study were subjected to necropsy and descriptions of all internal macroscopic abnormalities were recorded
Other examinations performed: none

Statistics:

No statistical analysis was performed (The method used is not intended to allow the calculation of a precise LD50 value).

Results and discussion

Effect levels

Key result

Sex:

female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

No mortality occurred.

Clinical signs:

other: Clinical signs observed during the study period as follows: Hunched posture, uncoordinated movements and/or piloerection were noted for all animals on Day 1.

Gross pathology:

No abnormalities were found at macroscopic post mortem examination of the animals.

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Remarks:

The test substance does not have to be classified and has no obligatory labelling requirement for acute oral toxicity according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) of the United Nations (2015) (including all amendments) and Regulation (EC) No 1272/2008 on classification, labelling and packaging of items and mixtures (including all amendments).

Conclusions:

In an acute oral toxicity study with Wistar rats, performed according to OECD/EC guidelines, the oral LD50 value of the test substance was established to exceed 2000 mg/kg body weight.
According to the OECD 423 test guideline, the LD50 cut-off value was considered to exceed 5000 mg/kg body weight.
Based on these results, the test substance does not have to be classified and has no obligatory labelling requirement for acute oral toxicity according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) of the United Nations (2015) (including all amendments) and Regulation (EC) No 1272/2008 on classification, labelling and packaging of items and mixtures (including all amendments).

Executive summary:

The acute oral toxicity of the test substance in rats was assessed by the Acute Toxic Class Method according to OECD guidelines and GLP principles. The test substance was administrated by oral gavage to two groups of three female Wistar rats at 2000 mg/kg body weight, stepwise. No mortality occurred. Hunched posture, uncoordinated movements and/or piloerection were noted for all the animals on Day 1. No changes in body weight gain were noted in exposed animals, and no toxicological significant abnormalities were found at macroscopic post mortem examination of the animals. The oral LD50 value was established to exceed 2000 mg/kg body weight. According to the OECD 423 guideline, the LD50 cut-off value was considered to exceed 5000 mg/kg body weight.

Based on these results, the test substance does not have to be classified and has no obligatory labelling requirement for acute oral toxicity according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) of the United Nations (2015) (including all amendments) and Regulation (EC) No 1272/2008 on classification, labelling and packaging of items and mixtures (including all amendments).