3-[(2-hydroxyethyl)amino]propionamide

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1993-03-08 to 1993-04-07

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study is an OECD 401 study under GLP and well documented

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1993

Report date:

1993

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 401 (Acute Oral Toxicity)

GLP compliance:

yes (incl. QA statement)

Test type:

standard acute method

Limit test:

yes

Test material

Test material information

Constituent 1

Reference substance name:

ACMEO

IUPAC Name:

ACMEO

Constituent 2

Reference substance name:

3-[(2-hydroxyethyl)amino]propionamide

EC Number:

248-211-9

EC Name:

3-[(2-hydroxyethyl)amino]propionamide

Cas Number:

27076-30-8

Molecular formula:

C5H12N2O2

IUPAC Name:

N~3~-(2-hydroxyethyl)-beta-alaninamide

Test material form:

other: colourless slightly viscous liquid

Details on test material:

- Name of test material (as cited in study report): ACMEO
- Physical state: colourless slightly viscous liquid
- Analytical purity: 58% aqueous solution
- Lot/batch No.: 3S1005
- Storage condition of test material: +4°C

Test animals

Species:

rat

Strain:

Sprague-Dawley

Sex:

male/female

Details on test animals or test system and environmental conditions:

Spraque Sawley strain rats. Weight at start:
TEST ANIMALS
- Source: supplied by Charles River (UK) Ltd.
- Age at study initiation: approx. five to eight weeks
- Weight at study initiation: males 156-188 g, females 142-154 g
- Fasting period before study: overnight fast immediately before dosing
- Housing: in groups of five by sex in solid polypropylene cages with sawdust bedding
- Diet (e.g. ad libitum): yes
- Water (e.g. ad libitum): yes
- Acclimation period: minimum 5 day period

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20-22°C
- Humidity (%): 42- 54 %
- Air changes (per hr): approx. 15/ hr
- Photoperiod (hrs dark / hrs light): 12 hours light, 12 hours dark

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

unchanged (no vehicle)

Details on oral exposure:

all animals (5/sex) were dosed once only with the undiluted test substance by oral gavage using a metal cannula. The volume administered to each animal was calculated according to its fasted body weight at the time of dosing (Specific gravity: 1.129; dose volume 1.78 mL/kg)

Doses:

2000 mg/kg body weight

No. of animals per sex per dose:

5/ sex /dose

Control animals:

no

Details on study design:

A range finding study was performed with one male and one female at a dose of 2000 mg/kg body weight to establish a dosing regime. The animals were observed for deaths or overt signs of toxicity 0.5, 1, 2 and 4 hours after dosing and subsequent once daily for 5 days.
Based on the results of the range finding study in the main study all animals (5/sex) were dosed once only by gavage at a dose of 2000 mg/kg body weight using a metal cannula. The volume administered to each animal was calculated according to its fasted body weight at the time of dosing. The animals were observed for deaths or overt signs of toxicity 0.5, 1, 2 and 4 hours after dosing and subsequent once daily for 14 days. Individual bodyweights were recorded prior to dosing on day 0 and on Days 7 and 14. At the end of the study the animals were killed by cervical dislocation and subjected to gross pathological examination. No tissues were retained.

Results and discussion

Effect levels

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

No mortality occurred.

Clinical signs:

other: No signs of systemic toxicity were noted during the study

Gross pathology:

No abnormalities were noted at necropsy.

Applicant's summary and conclusion

Interpretation of results:

practically nontoxic

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

The acute oral median lethal dose (LD 50) of the test material ACMEO in the spraque Dawley strain rat was found to be greater than 2000 mg/kg body weight.

Executive summary:

The acute oral toxicity of ACMEO was tested in 10 Spraque Dawley strain rat (5/sex) according to OECD test guideline 401. The test substance was applied once by oral gavage undiluted at a dose level of 2000 mg/kg body weight (limit test). Symptoms were recorded dayily and the animals were weight once a week upon an observation period of 14 days. No lethality occurred during the subsequent observation period. The animals killed at the end of the observation period showed no macroscopically visible changes.

Based on the study results the acute oral median lethal dose (LD 50) of the test material ACMEO in the spraque Dawley strain rat was found to be greater than 2000 mg/kg body weight.