Reaction mass of benzenamine, 2-ethyl-N-(2-ethyl-nonylphenyl) nonyl-, branched and benzenamine, 2-ethyl-N-(2-ethyl-nonylphenyl)-, branched

Endpoint summary

Description of key information

Acute Toxicity: oral

Key Study:

In a study performed to the standardised guideline OECD 420, under GLP conditions, the acute oral median lethal dose (LD50) of the test item in the female Wistar strain rat was estimated to be greater than 2000 mg/kg body weight.

Key value for chemical safety assessment

Acute toxicity: via oral route

Link to relevant study records

Reference

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

03 October 2017 to 26 March 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method B.1 bis (Acute Oral Toxicity - Fixed Dose Procedure)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 870.1100 (Acute Oral Toxicity)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: Japanese Ministry of Agriculture, Forestry and Fisheries (JMAFF), Testing Guidelines for Toxicology Studies, 12 Nousan No. 8147, 24 November 2000

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test type:

fixed dose procedure

Limit test:

yes

Specific details on test material used for the study:

Purity: >93%
Physical State/Appearance: Dark amber viscous liquid

Species:

rat

Strain:

Wistar

Sex:

female

Route of administration:

oral: gavage

Vehicle:

unchanged (no vehicle)

Doses:

2000 mg/kg body weight

No. of animals per sex per dose:

A sighting test using one animal, and additional four animals

Control animals:

no

Details on study design:

Following a sighting test at a dose level of 2000 mg/kg body weight in one fasted female animal, an additional four fasted female animals were given a single oral dose of the undiluted test item at a dose level of 2000 mg/kg body weight and followed with a 14-day observation period. Clinical signs and body weight development were monitored during the study. All animals were subjected to gross necropsy.

Key result

Sex:

female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

There were no unscheduled deaths.

Clinical signs:

other: There were no signs of systemic toxicity.

Gross pathology:

No abnormalities were noted at necropsy.

Interpretation of results:

GHS criteria not met

Conclusions:

The acute oral median lethal dose (LD50) of the test item in the female Wistar strain rat was estimated to be greater than 2000 mg/kg body weight.

Executive summary:

The study was performed to assess the acute toxicity of the test item following a single oral dose in the Wistar strain rat.

Following a sighting test at a dose level of 2000 mg/kg body weight in one fasted female animal, an additional four fasted female animals were given a single oral dose of the undiluted test item at a dose level of 2000 mg/kg body weight and followed with a 14-day observation period. Clinical signs and body weight development were monitored during the study. All animals were subjected to gross necropsy.

There were no unscheduled deaths and no signs of systemic toxicity. Based on historical data from the supplier for this strain, all animals showed expected gains in body weight over the observation period, except for one animal which showed an expected gain in body weight during the first week of the study but a slight body weight loss (-2.5%) during the second week. No abnormalities were noted at necropsy.

The acute oral median lethal dose (LD50) of the test item in the female Wistar strain rat was estimated to be greater than 2000 mg/kg body weight.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed

Dose descriptor:

LD50

Value:

2 000 mg/kg bw

Quality of whole database:

1

Acute toxicity: via inhalation route

Endpoint conclusion

Endpoint conclusion:

no study available

Acute toxicity: via dermal route

Endpoint conclusion

Endpoint conclusion:

no study available