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.

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

26 January 2017 to 13 July 2017

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study without detailed documentation

Qualifier:

according to guideline

Guideline:

other: ASTM D1076-88

Version / remarks:

Equipment: Brookfield Viscometer Model DV-11 + PRO

Principles of method if other than guideline:

Procedure: 7,0 gram of the sample is weighted to thermocel-tube with spindle 18. Thermocel is set to desired temperature +40 ˚C. Viscometer power is set ON. Spindel 18 is selected and speed is adjusted 60 RPM. The thermocel-tube is capped and let to equilibrate 30 minutes before measurement. A motor of viscometer is set to ON after 30 minutes and the viscosity value is recorded after 2 minutes rotation.

GLP compliance:

no

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Type of method:

capillary viscometer (static)

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

ca. 370

Conclusions:

Viscosity was determined to be 370 mPa x s (at 40 Celsius degrees)

Executive summary:

Viscosity was measured by using the method ASTM D1084 -63 at the temperature of 40 Celsius degrees. The result was 370 mPa x s.

Description of key information

Viscosity was determined to be 370 mPa x s (at 40 Celsius degrees)

Key value for chemical safety assessment

Viscosity:

370 mPa · s (dynamic)

at the temperature of:

40 °C