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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study, GLP. Study performed and documented equivalent to GLP standards. Study according to relevant guideline.
Qualifier:
according to guideline
Guideline:
other: DIN 51757
GLP compliance:
no
Remarks:
but certified according to DIN/EN/ISO 9001
Type of method:
oscillating densitimeter
Type:
relative density
Density:
0.884 g/cm³
Temp.:
20 °C
Conclusions:
The relative density is reported to be 0.884 g/cm³ (20 °C)
Executive summary:

The relative density is reported to be 0.884 g/cm³ (20 °C)

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
25-Aug-2008
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: According to generally accepted laboratory method (DIN 51 757), no-GLP. Study performed and documented equivalent to GLP standards. Study according to relevant guideline.
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
DIN 51757
Deviations:
no
Principles of method if other than guideline:
A mechanical oscillator constructed in the form of a U-Tube is vibrated at a resonance frequency which depends on its mass. Introducing a sample
changes the resonance frequency of the oscillator. The apparatus may be calibrated using water and air.
GLP compliance:
no
Type of method:
oscillating densitimeter
Type:
relative density
Density:
0.88
Temp.:
20 °C
Conclusions:
The relative density of the test item was determined according to DIN 51757 using an oscillating densitimeter: 0.882 at 20 °C.
Executive summary:

The relative density of the test item was determined according to DIN 51757 using an oscillating densitimeter: 0.882 at 20 °C.

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
25-Aug-2008
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: According to generally accepted laboratory method (DIN 51 757), no-GLP. Study performed and documented equivalent to GLP standards. Study according to relevant guideline.
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
DIN 51757
Deviations:
no
Principles of method if other than guideline:
A mechanical oscillator constructed in the form of a U-Tube is vibrated at a resonance frequency which depends on its mass. Introducing a sample
changes the resonance frequency of the oscillator. The apparatus may be calibrated using water and air.
GLP compliance:
no
Type of method:
oscillating densitimeter
Type:
relative density
Density:
0.872
Temp.:
20 °C
Conclusions:
The relative density of the test item was determined according to DIN 51757 using an oscillating densitimeter: 0.872 at 20 °C.
Executive summary:

The relative density of the test item was determined according to DIN 51757 using an oscillating densitimeter: 0.872 at 20 °C.

Endpoint:
density
Remarks:
density
Type of information:
not specified
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data from reliable handbook data and literature.
Guideline:
other: not known
Principles of method if other than guideline:
no data
GLP compliance:
not specified
Type of method:
other: no data
Type:
density
Density:
0.877 g/cm³
Temp.:
20 °C
Conclusions:
A reliable handbook value of 0.8767 g/cm³ at 20 °C is available.
Executive summary:

A reliable handbook value of 0.8767 g/cm³ at 20 °C is available.

Endpoint:
density
Remarks:
density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data from reliable handbook data and literature.
Guideline:
other: not known
Principles of method if other than guideline:
no data
GLP compliance:
not specified
Type of method:
other: no data
Type:
density
Density:
0.87 g/cm³
Temp.:
20 °C
Remarks on result:
other: room temperature (20 °C) assumed
Type:
density
Density:
0.874 g/cm³
Temp.:
20 °C
Type:
density
Density:
0.866 g/cm³
Temp.:
20 °C
Conclusions:
A reliable handbook value of 0.87 g/cm³ at 20 °C is available.
Executive summary:

A reliable handbook value of 0.87 g/cm³ at 20 °C is available.

Endpoint:
density
Remarks:
density
Type of information:
not specified
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Guideline:
other: not known
Principles of method if other than guideline:
no data
GLP compliance:
not specified
Type of method:
other: no data
Type:
density
Density:
0.88 g/cm³
Temp.:
20 °C
Conclusions:
A reliable handbook value of 0.8804 g/cm³ at 20 °C is available.
Executive summary:

A reliable handbook value of 0.8804 g/cm³ at 20 °C is available.

Endpoint:
density
Type of information:
not specified
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Guideline:
other: not known
Principles of method if other than guideline:
no data
GLP compliance:
not specified
Type of method:
other: no data
Key result
Type:
density
Density:
0.88 g/cm³
Temp.:
20 °C
Conclusions:
A reliable handbook value of 0.88 g/cm³ at 20 °C is available.
Executive summary:

A reliable handbook value of 0.88 g/cm³ at 20 °C is available.

Description of key information

Read across to the individual substances n-Nonyl methacrylate, i-Nonyl methacrylate, n-Decyl methacrylate (n-DMA), i-Decyl methacrylate (i-DMA), n-Lauryl methacrylate (n-LMA) and n-Tetradecyl methacrylate (n-TDMA) of NUMA UVCB substance and structural analogue substances of NUMA n-Octyl methacrylate (n-OMA), 2 -Ethylhexyl methacrylate (2 -EHMA) and LIMA UVCB substance (C12 -C16 methacrylate, CAS: 90552 -02 -6):

n-OMA: Density: 0.88 g/cm³ at 20 °C (handbook data, RL:2, Nabert, Schön, Redeker (2005))

n-OMA: Density: 0.8804 g/cm³ at 20°C (handbook data, RL: 2, Rehberg CE, Fisher CH, 1948)

2 -EHMA: Density: 0.884 g/cm³ at 20 °C (experimental data, RL:1, Evonik Röhm 2007)

n-DMA: Density: 0.8767 g/cm³ at 20°C (handbook data, RL: 2, Rehberg CE, Fisher CH, 1948)

i-DMA: Density: 0.882 g/cm³ at 20 °C (experimental data, RL:1, Liddiard 2008)

n-LMA: Density: 0.87 g/cm³ at 20 °C (handbook data, RL:2, Rehberg CE, Fisher CH, 1948)

LIMA (C12 -C16 methacrylate): Density: 0.872 g/cm³ at 20 °C (experimental data, RL:1, Liddiard 2008)

Overall, the physicochemical properties of the constituents of NUMA are showing a regular pattern. The density is equal for all constituents of NUMA.

Key value for chemical safety assessment

Relative density at 20C:
0.88

Additional information

Conclusion:

The density is equal for all constituents of NUMA.

From reliable handbook and experimental values of the read across substances for NUMA UVCB substance a density of 0.88 g/cm³ at 20 °C is assumed for risk assessment.