2-amino-2-methylpropanol

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Not applicable

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: meets generally accepted scientific standards, well-documented, and acceptable for assessment

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1976

Report date:

1976

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 401 (Acute Oral Toxicity)

Principles of method if other than guideline:

Not applicable

GLP compliance:

not specified

Test type:

acute toxic class method

Limit test:

no

Test material

Test material information

Constituent 1

Reference substance name:

2-amino-2-methylpropanol

EC Number:

204-709-8

EC Name:

2-amino-2-methylpropanol

Cas Number:

124-68-5

Molecular formula:

C4H11NO

IUPAC Name:

2-amino-2-methylpropan-1-ol

Details on test material:

- Name of test material (as cited in study report): P-1826 (6C29-9B) (AMP)

Test animals

Species:

rat

Strain:

not specified

Sex:

male

Details on test animals or test system and environmental conditions:

The acute oral toxicity of P-1826 (AMP) was determined using young adult male fasted rats.

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

other: saline

Details on oral exposure:

Five groups of 10 animals each were administered orally a single dose of P-1826 diluted in saline using equal volumes.

Doses:

2200, 2400, 2800, 3600, 4000 mg/kg (440, 480, 560, 720, 800 mg/ml)

No. of animals per sex per dose:

10 male rats/dose

Control animals:

no

Details on study design:

The acute oral toxicity of P-1826 was determined using young adult male fasted rats. Five groups of 10 animals each were administered orally a single dose of P-1826 diluted in saline using equal volumes. Animals were observed closely for four hours and daily thereafter for 14 days.

Statistics:

Not applicable

Results and discussion

Preliminary study:

Not applicable

Effect levels

Effect levels 1

Sex:

male

Dose descriptor:

LD0

Effect level:

2 200 mg/kg bw

Effect levels 2

Sex:

male

Dose descriptor:

LD50

Effect level:

2 900 mg/kg bw

Remarks on result:

other: + or- 140 mg/kg

Effect levels 3

Sex:

male

Dose descriptor:

LD100

Effect level:

4 000 mg/kg bw

Mortality:

Doses exceeding 2800 mg/kg orally results in rapid absorbtion into the circulatory system resulting in gross damage to the liver, kidney, spleen, and respiratory system, followed by respiratory collapse. The compound produces irritation to the stomach and duodenum at doses of 2800 mg/kg and greater.

Clinical signs:

other: In life observations included: traces of blood on the nostrils, labored breathing, ataxia, and death due to respiratory collapse.

Gross pathology:

Necropsy findings (animals that died during the observation period): gas in stomach, inflamed and gaseous duodenum, liver and spleen dark, blood clot in heart.

Necropsy findings (survivors until a scheduled necropsy): No findings in dose levels less than 2800 mg/kg. At 2800 mg/kg, 3 were grossly normal and 3 had a small amount of gas in the stomach with a slightly inflamed duodenum. At 3600 mg/kg, 1 was grossly normal and 1 was grossly normal except a stomach adhered to the liver.

Other findings:

The following data are reported:

LD0 = 2200 mg/kg
LD50 = 2900 +/-140 mg/kg
LD100 = 4000 mg/kg

Any other information on results incl. tables

Not applicable

Applicant's summary and conclusion

Interpretation of results:

not classified

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

The substance has low acute oral toxicity.

Executive summary:

The acute oral toxicity of P-1826 was determined using young adult male fasted rats. Five groups of 10 animals each were administered orally a single dose of P-1826 diluted in saline using equal volumes. Animals were observed closely for four hours and daily thereafter for 14 days. P-1826 is the code designation for 2-amino-2-methyl-l-propanol. Doses exceeding 2800 mg/kg orally results in rapid absorption into the circulatory system resulting in gross damage to the liver, kidney, spleen, and respiratory system followed by respiratory collapse. The compound produces irritation to the stomach and duodenum at doses of 2800 mg/kg and greater. The LD50 was calculated to be 2900 mg/kg bw.