Tar, Pinus Sylvestris L. A complex combination distillate produced from trunks, stumps and roots of Pinus sylvestris L. by a traditional pine tar pit, kiln or retort process.

Endpoint summary

Description of key information

The test item Tar, Pinus sylvestris was administered, as supplied, to a group of 6 females

Sprague Dawley at the dose of 2000 mg/ kg body weight. The experimental protocol was established

according to the official method as defined in the O.E.C.D. Test Guideline No. 423 dated December

17th, 2001 and the test method B.1tris of the Council Regulation No. 440/2008.

The LD50 of the test item Pine tar / Tar,Pinus sylvestris is higher than 2000 mg/ kg body weight by oral route in the rat.

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:

The experiment was performed between 28 February and 16 March 2017

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:

The experimental protocol was established according to the official method as defined in the O.E.C.D. Test Guideline No. 423 dated December 17th, 2001 and the test method B.1tris of the Council Regulation No. 440/2008.

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

Certificate attached in the study report

Test type:

acute toxic class method

Limit test:

no

Species:

rat

Strain:

Sprague-Dawley

Sex:

female

Details on test animals or test system and environmental conditions:

Healthy female rats were housed by group of three in solid-bottomed clear polycarbonate cages with a stainless steel mesh lid. Each cage contains sawdust bedding which was changed at least 2 times a week. Each cage was installed in conventional air conditioned animal husbandry. The temperature and relative humidity of the main test were controlled to remain within target ranges of 19°C to 25°C and 30% to 70%, respectively. The rate of air exchange was at least ten changes per hour and the lighting was controlled by a time switch to give twelve hours continuous light (07.00 to 19.00) and twelve hours darkness.

Route of administration:

oral: gavage

Vehicle:

other: graduated syringe fitted with an oesophageal metal canula

Details on oral exposure:

The test item was administered by gavage under a volume of 1.89 mL/kg body weight (corresponding to 2 g/kg, according to the calculated density) using a suitable graduated syringe fitted with an oesophageal metal canula.

Doses:

The animals of the treated group received an effective dose of 2000 mg/kg body weight of the test item Pine tar / Tar,Pinus sylvestris.

No. of animals per sex per dose:

6

Control animals:

yes

Details on study design:

Systematic examinations were carried out to identify any behavioural or toxic effects on the major physiological functions during 14 days following the administration of the test item. This examination focuses particularly on a list of symptoms, recorded as "present" or "absent" on the
observation sheet. These observations were compared to historical control data. Observations and a mortality report were then carried out every day for 14 days.

Statistics:

The clinical observations are given in the observation data sheets.
The details of body weight evolution are presented in Table 4 in attached study report.
The results of the macroscopic examinations are given in the necropsy data sheets (Tables 5 & 6).

Key result

Sex:

female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Mortality:

No mortality occurred during the study.

Clinical signs:

It was only noted an increase of salivation and mydriasis at 30 minutes post-dose in only one animal (1/6). No other signs of systemic toxicity were noted.

Body weight:

The body weight evolution of the animals remained normal during the study.

Gross pathology:

The macroscopic examination of the animals at the end of the study revealed a thickening of white forestomach (3/6).

Interpretation of results:

Category 5 based on GHS criteria

Conclusions:

The LD50 of the test item Pine tar / Tar,Pinus sylvestris is higher than 2000 mg/ kg body weight by oral route in the rat. In accordance with the O.E.C.D. Test Guideline No. 423, the LD50 cut-off of the test item may be considered to be higher than 5000 mg/ kg body weight by oral route in the rat.
The test item Pine tar / Tar,Pinus sylvestris does not have to be classified in accordance with the Regulation EC No. 1272/2008 on classification, labelling and packaging of substances and mixtures. No signal word or hazard statement is required.

Executive summary:

The test item Pine tar / Tar,Pinus sylvestris was administered, as supplied, to a group of 6 females Sprague Dawley at the dose of 2000 mg/ kg body weight. The experimental protocol was established according to the official method as defined in the O.E.C.D. Test Guideline No. 423 dated December 17th, 2001 and the test method B.1tris of the Council Regulation No. 440/2008. No mortality occurred during the study.

In conclusion, the LD50 of the test item Pine tar / Tar,Pinus sylvestris is higher than 2000 mg/ kg body weight by oral route in the rat.

In accordance with the O.E.C.D. Test Guideline No. 423, the LD50 cut-off of the test item may be considered to be higher than 5000 mg/ kg body weight by oral route in the rat.

The test item Pine tar / Tar,Pinus sylvestris does not have to be classified in accordance with the Regulation EC No. 1272/2008 on classification, labelling and packaging of substances and mixtures.

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

Justification for classification or non-classification

The LD50 of the test item Pine tar / Tar,Pinus sylvestris is higher than 2000 mg/ kg body weight by oral route in the rat. In accordance with the O.E.C.D. Test Guideline No. 423, the LD50 cut-off of the test item may be considered to be higher than 5000 mg/ kg body weight by oral route in the rat. The test item Pine tar / Tar,Pinus sylvestris does not have to be classified in accordance with the Regulation EC No. 1272/2008 on classification, labelling and packaging of substances and mixtures. No signal word or hazard statement is required.