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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The densities of substances in this category were measured to be in the range 0.77 (C12) - 0.81 (C16) g/mL at 20°C.


A guideline study (Evonik Oxeno, 2008) is available. The density at 20°C of 97280-83-6 was measured as 0.77 g/mL. Supporting studies from Evonik (2008) for 97280-83-6 and Aqura (2006, 2007) for tetrabutene reported a density of 0.7736 g/cm3 and 0.8097, 0.8118 g/mL respectively.

These values are considered to be representative of the category.


New data areavilable for 5 streams in this category from Intertek (2018):


EC# 500-001-0_Intertek 2019_Key: 0.804 Kg/L at 15ºC.

EC# 500-004-7_Intertek 2019_Key: 0.8017 Kg/L at 15ºC

EC# 293-263-8_Intertek 2019_Key: 0.7629 Kg/L at 15ºC.

EC# 306-479-5_Intertek 2019_Key: 0.7718 Kg/L at 15ºC.

EC# 293-262-2_Intertek 2019_Key: 0.798 Kg/L at 15ºC.


The mean of the relative density values for the category is 0.7914 at20 °C and this has been used to complete the 'key value for chemical safety assessment'.

Key value for chemical safety assessment

Relative density at 20C:

Additional information