p-cymene

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 2020-06-18 to 2020-07-13

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Version / remarks:

2012

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Version / remarks:

Regulation (EC) No 440/2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)

Version / remarks:

2002

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: CIPAC MT 3 - Specific Gravity, Density, and Weight per Mililitre

Version / remarks:

2009

Deviations:

no

GLP compliance:

no

Type of method:

oscillating densitimeter

Key result

Type:

relative density

Density:

0.858 other: dimensionless

Temp.:

20 °C

Type:

relative density

Density:

0.844 other: dimensionless

Temp.:

40 °C

Relative Density at 20 °C

Table 1: Results of the measurement of the relative density of the test item at 20 °C.

Test No.	Temperature [°C]	Relative Density
1	20	0.8586
2	20	0.8581
3	20	0.8579

The mean relative density of the test item at 20 °C is 0.8582.
The relative density is D₄²⁰ = 0.858

Relative Density at 40 °C

Table 2: Results of the measurement of the relative density of the test item at 40 °C.

Test No.	Temperature [°C]	Relative Density
1	40	0.8443
2	40	0.8443
3	40	0.8443

The mean relative density of the test item at 40 °C is 0.8443.
The relative density is D₄⁴⁰ = 0.844

Conclusions:

The relative density D420 of the test item at 20 °C ± 0.01 °C (compared to water at 4 °C) is determined to be D420 = 0.858. Analogously, the relative density D440 of the test item at 40 °C ± 0.01 °C (compared to water at 4 °C) is determined to be D440 = 0.844.

Executive summary:

A study was conducted according to OECD TG 109, Regulation (EC) No 440/2008 method A.3 and OPPTS 830.7300 to determine the relative density of the test item. Therefore, the density was measured at temperatures of 20 °C ± 0.01 °C and 40 °C ± 0.01 °C using the oscillating densitometer. An initial calibration with purified-water and dry air was carried out. Subsequently, three independent measurements of the test item per temperature were performed. The mean relative density of the test item at 20 °C with respect to water at 4 °C was determined to be 0.858, and at 40 °C with respect to water at 4 °C was determined to be 0.844.

Description of key information

The relative density D420 of the test item at 20 °C ± 0.01 °C (compared to water at 4 °C) is determined to be D420 = 0.858. Analogously, the relative density D440 of the test item at 40 °C ± 0.01 °C (compared to water at 4 °C) is determined to be D440 = 0.844.

Key value for chemical safety assessment

Relative density at 20C:

0.858

Additional information

A study was conducted according to OECD TG 109, Regulation (EC) No 440/2008 method A.3 and OPPTS 830.7300 to determine the relative density of the test item. Therefore, the density was measured at temperatures of 20 °C ± 0.01 °C and 40 °C ± 0.01 °C using the oscillating densitometer. An initial calibration with purified-water and dry air was carried out. Subsequently, three independent measurements of the test item per temperature were performed. The mean relative density of the test item at 20 °C with respect to water at 4 °C was determined to be 0.858, and at 40 °C with respect to water at 4 °C was determined to be 0.844.