alkyl substituted aryl diazo heterocyclic aryl ester

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

May/June 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Fully GLP compliant guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

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:

equivalent or similar to guideline

Guideline:

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

Deviations:

no

Test guideline 3

Qualifier:

equivalent or similar to guideline

Guideline:

EPA OPPTS 870.1100 (Acute Oral Toxicity)

Deviations:

no

GLP compliance:

yes

Test type:

acute toxic class method

Limit test:

yes

Test material

Test material information

Constituent 1

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Details on test material:

Test item: Disperse Red DYGJ 0702

Test animals

Species:

rat

Strain:

Sprague-Dawley

Sex:

female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Harlan Italy s.r.l., San Pietro al Natisone (UD), Italy
- Age at study initiation: approximately 8-9 weeks
- Weight at study initiation: approximately 200 g
- Fasting period before study: overnight fasting
- Housing: 3 animals/cage
- Diet (e.g. ad libitum): ad libitum, except for the fasting period prior to dosing
- Water (e.g. ad libitum): ad libitum
- Acclimation period: at leat 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22°C+/-2°C
- Humidity (%): 55%+/-15%
- Air changes (per hr): Approximately 15 to 20 air changes per hour
- Photoperiod (hrs dark / hrs light): Artificial (fluorescent tubes), daily light/dark cycle of 12/12 hours

IN-LIFE DATES: From: 28 May 2015 (Allocation of the animals to the first group) To: 19 June 2015 (Last necropsy procedure)

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

other: PEG 400 - water 1:1 v/v

Details on oral exposure:

VEHICLE
- Concentration in vehicle: 200 mg/mL
- Amount of vehicle (if gavage): 10 mL/kg
- Justification for choice of vehicle: solubility of the test item

Doses:

2000 mg/kg body weight

No. of animals per sex per dose:

6 females/dose

Control animals:

no

Details on study design:

- Duration of observation period following administration: 14 days
- Frequency of observations: Animals will be examined for signs of reaction to treatment on dosing, approximately 30 min, 2 and approximately 4 hours after dosing on Day 1, then daily for a total of 14 days.
- Weigh of the animals: Each animal will be weighed on the day of allocation to study, on the day of dosing (Day 1) and on Days 2, 8 and 15.
- Necropsy performed: yes

Results and discussion

Effect levels

Sex:

female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Mortality:

No mortality occurred.

Clinical signs:

other: No clinical signs were observed in the first group of animals initially dosed at 2000 mg/kg body weight and in the further group of 3 females dosed at the same dose level.

Gross pathology:

No abnormalities were observed at necropsy examination performed on all animals dosed at 2000 mg/kg body weight(Groups 1 and 3) at the end of the observation period.

Applicant's summary and conclusion

Interpretation of results:

practically nontoxic

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

The test item Disperse Red DYGJ 0702 did not induce toxic effects in the rat following oral administration of a single dose at a level of 2000 mg/kg body weight. The lack of mortality demonstrates the acute toxicity expected (ATE) to be greater than 2000 mg/kg body weight.

Executive summary:

The acute toxicity of Disperse Red DYGJ 0702 was investigated following a single oral administration to the Sprague Dawley rat followed by a 14-day observation period. A first group of 3 female animals was initially dosed at 2000 mg/kg body weight (Step 1).

No mortality occurred and no clinical signs were observed. A second group of 3 female animals was then dosed at the same dose level (Step 2). No death occurred and no clinical signs were noted.

Body weight changes recorded during the study were within the expected range for this strain and age of animals.

No abnormalities were observed at necropsy examination performed at the end of the observation period on animals of both groups.

These results indicate that the test item did not induce toxic effects in the rat following oral administration of a single dose at a level of 2000 mg/kg body weight. The lack of mortality demonstrates the acute toxicity expected (ATE) to be greater than 2000 mg/kg body weight.

European Directives concerning the classification, packaging and labelling of dangerous substances (Council Regulation (EC) No. 1272/2008 and subsequent revisions) would indicate the following:

Classification: No category

Signal word: No signal word required

Hazard statement: No hazard statement required