(ethyl acetoacetato-O1',O3)(pentane-2,4-dionato-O,O')[propane-1,3-diolato(2-)-O,O']titanium

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

08-03-2017 to 29-03-2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 420 (Acute Oral Toxicity - Fixed Dose Method)

Version / remarks:

17 Dec 2001

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.1 (Acute Toxicity (Oral))

GLP compliance:

yes (incl. QA statement)

Test type:

fixed dose procedure

Limit test:

no

Test material

Test material information

Constituent 1

Reference substance name:

(ethyl acetoacetato-O1',O3)(pentane-2,4-dionato-O,O')[propane-1,3-diolato(2-)-O,O']titanium

EC Number:

279-899-9

EC Name:

(ethyl acetoacetato-O1',O3)(pentane-2,4-dionato-O,O')[propane-1,3-diolato(2-)-O,O']titanium

Cas Number:

82089-64-3

Molecular formula:

C14H22O7Ti

IUPAC Name:

13-ethoxy-8,10,15-trimethyl-1λ³,5λ³-dioxa-7λ³,11λ³,12,16-tetraoxa-6-titanaspiro[5.5⁶.5⁶]hexadeca-7,10-diene-6,6,6,6-tetrakis(ylium)-1,5,9,14-tetraide

Test material form:

liquid: viscous

Test animals

Species:

rat

Strain:

Wistar

Remarks:

RccHan:WIST

Sex:

female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Envigo RMS Limited, UK
- Females nulliparous and non-pregnant: yes
- Age at study initiation: 8 - 12 weeks
- Weight at study initiation: 163 - 185g (main study)
- Fasting period before study: overnight fast immediately before and approx. 3 -4 hours after dosing
- Housing: in groups of up to four in suspended solid-floor polypropylene cages with woodflakes
- Diet: free access to food (2014C Teklad Global Rodent diet)
- Water: free access to main drinking water
- Acclimation period: at least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19 - 25°C
- Humidity (%): 30 - 70%
- Air changes (per hr): at least 15
- Photoperiod (hrs dark / hrs light): 12 / 12

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

DMSO

Doses:

300 mg/kg
2000 mg/kg

No. of animals per sex per dose:

2000 mg/kg: 1 animal (sighting study)
300 mg/kg: 1 animal (sighting study)
300 mg/kg: 5 animals

Control animals:

no

Details on study design:

- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: Morbidity and mortality checks twice daily, once daily at weekend and public holidays; weighing on days 0, 7 and 14 d or at death
- Necropsy of survivors performed: yes
- Clinical observations: 30 min, 1, 2, 4 h afer dosing, then daily up to 14 d

Results and discussion

Preliminary study:

Sighting study: In the absence of toxicity at a dose level of 300 mg/kg tested in one animal, an additional animal was treated with 2000 mg/kg. At this dose level, the signs of systemic toxicity noted were hunched posture, lethargy, noisy and labored respiration, pilo-erection and dehydration. The tested animal was killed for humane reasons, 1 day after dosing.
Due to mortality and signs of systemic toxicity in the "main test" a group of five animals was tested with 300 mg/kg.

Effect levels

Sex:

female

Dose descriptor:

LD50

Effect level:

> 300 - < 2 000 mg/kg bw

Based on:

test mat.

Mortality:

Dose level - 2000 mg/kg (sighting study): the animal was killed 1 day after dosing, due to the occurrence of clinical signs of toxicity that were considered likely to exceed the severity limit.
Dose level - 300 mg/kg: no death

Clinical signs:

other: Dose level - 2000 mg/kg (sighting study): Signs of systemic toxicity noted were hunched posture, lethargy, noisy and labored restiration, pilo-erection and dehydration Dose level - 300 mg/kg: No signs of systemic toxicity noted during the observation peri

Gross pathology:

Necropsy:
Dose level - 2000 mg/kg (sighting study): Gaseous stomach and test item present in the stomach
Dose level - 300 mg/kg: No abnormalities

Applicant's summary and conclusion

Interpretation of results:

Category 4 based on GHS criteria

Conclusions:

The acute oral median lethal dose (LD50) of the test item in the female Wistar strain rat was estimated to be in the range of 300 - 2000 mg/kg body weight (CLP - Category 4).

Executive summary:

The acute oral median lethal dose (LD50) of the test item in the female Wistar strain rat was estimated to be in the range of 300 - 2000 mg/kg body weight (CLP - Category 4).