Xylene

Density

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2007

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, information from a published handbook, acceptable with restrictions.

Principles of method if other than guideline:

The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the NIOSH pocket guide states that the data was collected from a variety of sources, including NIOSH policy documents and recognised literature references. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

not specified

Type of method:

other: not reported

Specific details on test material used for the study:

N/A

Key result

Type:

relative density

Density:

ca. 0.87 other: unitless

Temp.:

20 °C

N/A

Conclusions:

The density of ethylbenzene is 0.87 (unitless) at 20°C.

Executive summary:

No information on the primary source of this data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook (Barsan 2007) and so can be considered reliable and suitable for use for this endpoint.

Reference 2

Endpoint:

density, other

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Up to 2008

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, guideline not known, information from a published handbook, acceptable with restrictions

Principles of method if other than guideline:

The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

not specified

Type of method:

other: not reported

Specific details on test material used for the study:

N/A

Dynamic viscosity of test material:

N/A

Key result

Type:

relative density

Density:

0.86

Temp.:

25 °C

N/A

Conclusions:

The density of m-xylene is 0.8598 g/cm^3 at 25°C.

Executive summary:

No information on the methods used is available. However, this information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Reference 3

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2007

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, guideline not known, information from a published handbook, acceptable with restrictions

Principles of method if other than guideline:

The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the NIOSH pocket guide states that the data was collected from a variety of sources, including NIOSH policy documents and recognised literature references. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

not specified

Type of method:

other: not reported

Specific details on test material used for the study:

N/A

Key result

Type:

relative density

Density:

ca. 0.86 other: unitless

Temp.:

20 °C

N/A

Conclusions:

The density of m-xylene is 0.86 (unitless) at 20°C.

Executive summary:

No information on the methods used is available. However, this information is taken from a reliable peer reviewed handbook (Barsan 2007) and so can be considered reliable and suitable for use for this endpoint.

Reference 4

Endpoint:

density, other

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Up to 2008

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, guideline not known, information from published handbook, acceptable with restrictions

Principles of method if other than guideline:

The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

not specified

Type of method:

other: not reported

Specific details on test material used for the study:

N/A

Key result

Type:

density

Density:

0.88 g/cm³

Temp.:

25 °C

N/A

Conclusions:

The density study of o-xylene is 0.8755 g/cm^3 at 25°C.

Executive summary:

No information on the methods used is available. However, this information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Reference 5

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2006

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, guideline not known, information from published handbook, acceptable with restrictions

Principles of method if other than guideline:

The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the Merck Index states that physical data are cited as found in the literature. When several alternate data values appear in the literature, the data is evaluated and representative selections are made; values are then reported with the corresponding source. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

not specified

Type of method:

other: not reported

Specific details on test material used for the study:

N/A

Key result

Type:

relative density

Density:

ca. 0.88 other: unitless

Temp.:

20 °C

N/A

Conclusions:

The density study of o-xylene is 0.8801 (unitless) at 20°C.

Executive summary:

No information on the methods used is available. However, this information is taken from a reliable peer reviewed handbook (O'Neil 2006) and so can be considered reliable and suitable for use for this endpoint.

Reference 6

Endpoint:

density, other

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2008

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, information from a published handbook, acceptable with restrictions.

Principles of method if other than guideline:

The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

not specified

Type of method:

other: not reported

Specific details on test material used for the study:

N/A

Key result

Type:

density

Density:

0.86 g/cm³

Temp.:

25 °C

N/A

Conclusions:

The density of p-xylene is 0.8565 g/cm^3 at 25°C.

Executive summary:

No information on the primary source of this data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Reference 7

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, information from a published handbook, acceptable with restrictions.

Principles of method if other than guideline:

The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the Merck Index states that physical data are cited as found in the literature. When several alternate data values appear in the literature, the data is evaluated and representative selections are made; values are then reported with the corresponding source. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

not specified

Type of method:

other: not reported

Specific details on test material used for the study:

N/A

Key result

Type:

relative density

Density:

ca. 0.86 other: unitless

Temp.:

20 °C

N/A

Conclusions:

The density of p-xylene is 0.86104 (unitless) at 20°C.

Executive summary:

No information on the primary source of this data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook (O'Neil 2006) and so can be considered reliable and suitable for use for this endpoint.

Description of key information

The relative density and density of o-xylene at 20 °C were reported as 0.8801 and 0.8755 g/cm3 respectively. The density and the relative density of m-xylene at 20 °C as 0.8598 g/cm3 and 0.86. The relative density and the density of p-xylene at 20 °C as 0.86104 and 0.8565 g/cm3. The relative density of ethylbenzene at 20 °C as 0.867. 

 

The mean value of relative density was 0.866 at 20 °C will be used for the risk assessment.

Key value for chemical safety assessment

Relative density at 20C:

0.867

Additional information

The Merck Handbook (O'Neil 2006) and the NIOSH pocket guide (Barsan 2007) are peer reviewed handbooks and so can be considered reliable and suitable for use for this endpoint.