Boswellia papyrifera, ext.

Endpoint summary

Description of key information

Acute toxicity, oral in rats: LD50 > 2000 mg/kg bw (OECD 423, GLP, K, Rel. 1)

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:

09 October - 24 October 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)

Version / remarks:

dated 17 December, 2001

Deviations:

no

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

Principles of method if other than guideline:

Not applicable

GLP compliance:

yes (incl. QA statement)

Test type:

acute toxic class method

Limit test:

yes

Species:

rat

Strain:

Sprague-Dawley

Sex:

female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Elevage JANVIER LABS, France
- Females (if applicable) nulliparous and non-pregnant: Yes
- Age at study initiation: 8 or 9 weeks
- Weight at study initiation: 179-209 g
- Fasting period before study: Food was removed on Day 1 and then redistributed 4 hours after the test item administration.
- Housing: Animals were housed by group of three in solid-bottomed clear polycarbonate cages with a stainless steel mesh lid.
- Diet (e.g. ad libitum): Foodstuff (ENVIGO - 2016), ad libitum
- Water (e.g. ad libitum): Drinking water (tap-water from public distribution system), ad libitum
- Acclimation period: At least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature: 19-25°C
- Humidity: 30-70%
- Air changes: At least 10/hour
- Photoperiod: 12 hours dark / 12 hours light

Route of administration:

oral: gavage

Vehicle:

unchanged (no vehicle)

Details on oral exposure:

DOSAGE PREPARATION:In the first and second step of the study, the test item was administered by gavage under a volume of 2.28 mL/kg bw (corresponding to 2 g/kg bw, according to the calculated density), using a suitable graduated syringe fitted with an oesophageal metal canula.

Doses:

2000 mg/kg bw

No. of animals per sex per dose:

6 female rats

Control animals:

no

Details on study design:

- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: Clinical observations and mortality were recorded at 30 minutes, 1 hour, 3 hours, 4 hours, and then once daily for 14 days. Animals were weighed on Day 0 (just before administering the test item) and then on Day 2, Day 7 and Day 14.
- Necropsy of survivors performed: Yes; animals were euthanized with sodium pentobarbital on Day 14 and macroscopic observations were noted.

Statistics:

No data

Preliminary study:

Not applicable

Key result

Sex:

female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

One mortality was noted in animals treated at the dose of 2000 mg/kg bw on Day 1.

Clinical signs:

other: The mortality was preceeded by a red liquid around the nose. Before the necropsy, rigor mortis was noted. In the surviving animals (5/6), no clinical signs related to the administration of the test item were observed during the study.

Gross pathology:

The macroscopic examination of the animal revealed a presence of food in rib cage. This mortality may be due to a gavage injury.
The macroscopic examination of the animals at the end of the study did not reveal treatment related changes.

Other findings:

None

None

Interpretation of results:

GHS criteria not met

Conclusions:

Under the test conditions, the oral LD50 of the test substance is >2000 mg/kg bw in rats. Therefore it is not classified according to the Regulation (EC) N° 1272-2008. No signal word or hazard statement is required.

Executive summary:

In an acute oral toxicity study performed according to the OECD Guideline 423 and in compliance with GLP, a single dose of 2000 mg/kg bw of the test substance was given by oral gavage to a group of 6 female Sprague-Dawley rats. Animals were then observed for mortality and clinical signs of toxicity for 14 days.

One mortality was noted in animals treated at the dose of 2000 mg/kg bw on Day 1. The mortality was preceeded by a red liquid around the nose. Before the necropsy, rigor mortis was noted. In the surviving animals (5/6), no clinical signs related to the administration of the test item were observed during the study. The body weight evolution of the animals remained normal throughout the study. The macroscopic examination of the animal revealed a presence of food in rib cage. This mortality may be due to a gavage injury. The macroscopic examination of the animals at the end of the study did not reveal treatment related changes.

Under the test conditions, the oral LD50 of the test substance is >2000 mg/kg bw in rats. Therefore it is not classified according to the Regulation (EC) N° 1272-2008. No signal word or hazard statement is required.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed

Dose descriptor:

LD50

Value:

2 000 mg/kg bw

Quality of whole database:

Adequate for hazard assessment

Acute toxicity: via inhalation route

Endpoint conclusion

Endpoint conclusion:

no study available

Acute toxicity: via dermal route

Endpoint conclusion

Endpoint conclusion:

no study available

Additional information

Acute toxicity: via oral route

In an acute oral toxicity study performed according to the OECD Guideline 423 and in compliance with GLP, a single dose of 2000 mg/kg bw of the test substance was given by oral gavage to a group of 6 female Sprague-Dawley rats. Animals were then observed for mortality and clinical signs of toxicity for 14 days.

One mortality was noted in animals treated at the dose of 2000 mg/kg bw on Day 1. The mortality was preceeded by a red liquid around the nose. Before the necropsy, rigor mortis was noted. In the surviving animals (5/6), no clinical signs related to the administration of the test item were observed during the study. The body weight evolution of the animals remained normal throughout the study. The macroscopic examination of the animal revealed a presence of food in rib cage. This mortality may be due to a gavage injury. The macroscopic examination of the animals at the end of the study did not reveal treatment related changes.

Under the test conditions, the oral LD50 of the test substance is >2000 mg/kg bw in rats. Therefore it is not classified according to the Regulation (EC) N° 1272-2008. No signal word or hazard statement is required.

Justification for classification or non-classification

Harmonized classification:

The registered substance has no harmonized classification according to the Regulation (EC) No. 1272/2008.

Self-classification:

Acute toxicity via Oral route:

Based on the available information, the registered substance is:

- not classified according to the Regulation (EC) No. 1272/2008.

Acute toxicity via Dermal route:This information is not available

Acute toxicity via Inhalation:This information is not available.

Specific target organ toxicity: single exposure (Oral):

The classification criteria according to the Annex VI of the Regulation (EC) No. 1272/2008 as specific target organ toxicant (STOT) – single exposure, oral are not met since no reversible or irreversible adverse health effects were observed immediately or delayed after exposure and no effects were observed at the guidance value (oral) for a Category 1 classification (C ≤ 300 mg/kg bw) and at the guidance value (oral) for a Category 2 classification (2000 mg/kg bw ≥ C > 300 mg/kg bw). No classification is required.

Specific target organ toxicity: single exposure (Dermal): This information is not available

Specific target organ toxicity: single exposure (Inhalation): This information is not available.

Based on its composition and its physical state, the registered substance is not classified for aspiration hazard acording to CLP Regulation.