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relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19-03-2019 until 30-04-2019
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
OECD Guideline 109 (Density of Liquids and Solids)
according to guideline
EU Method A.3 (Relative Density)
Version / remarks:
(EC) 440/2008
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Specific details on test material used for the study:
Test Item Name: 2,2'-MDI (EC Number: 219-799-4)
Substance Name: 2,2'-methylenediphenyl diisocyanate
Batch/ Lot Number: WRS4821
Expiry date: 10/03/2019 storage < 5°C
Key result
relative density
ca. 1.343
20 °C
1 342.6 kg/m³
20 °C
Mean Result :
Relative density (D204) 1.3426
Test Item density 1342.6 kg.m-3 @ 20°C
Executive summary:

Test Objective and Information

The test is conducted to determine the relative density of a solid or liquid substance.

The relative density D204of solids or liquids is the ratio between the mass of a volume of substance to be examined, determined at 20°C, and the mass of the same volume of water, determined at 4°C. The relative density has no dimension.

The density, ρ,of a substance is the quotient of the mass, m, and its volume, v.The density, ρ, is given, in SI units, in kg/m3.

For solids or liquids, pycnometers of various shapes and with known volumes may be employed. The density is calculated from the difference in weight between the full and empty pycnometer and its known volume. The tests are run at a constant temperature, preferably 20°C, and at least two measurements are generally performed.

The test is conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A.3 and OECD Test Guideline 109.

Mean Result :

Relative density (D204) 1.3426

Test Item density 1342.6 kg.m-3 @ 20°C

Description of key information

A study with 2,2'-MDI reports a relative density of 2,2'-MDI of 1.3426, measured according to EU Method A.3 (air comparison pycnometer (for solids).

Key value for chemical safety assessment

Relative density at 20C:

Additional information