Registration Dossier
Registration Dossier
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EC number: 245-509-0 | CAS number: 23235-61-2
Endpoint summary
Administrative data
Description of key information
Additional information
Appearance
At ambient temperature and pressure, Di-Trimethylpropane is an odourless, white solid flake (Analytical Chemistry, Perstorp Holding AB, 2009).
Melting point
The melting point of Di-Trimethylpropane is 382 K (109 °C) (Analytical Chemistry, Perstorp Holding AB, 2009).
Boiling point
The boiling point of Di-Trimethylpropane is 651 K (378 °C) (Analytical Chemistry, Perstorp Holding AB, 2009).
Density
The relative density of Di-Trimethylpropane is 1.13 at 20 °C (relative to water at 4 °C) (Analytical Chemistry, Perstorp Holding AB, 2009).
Granulometry
The inhalable fraction (< 100 µm) is 90.1% on micronised Di-Trimethylpropane (Analytical Chemistry, Perstorp Holding AB, 2009)
Vapour pressure
Since the vapour pressure is low with both calculation methods (SPARC and MPBPWIN), Di-Trimethylpropane is not likely to vapourise and become airborne. The highest calculatated value is 4.7 x10^-7 Pa.
Partition coefficient
The partition coefficient (log Kow) for Di-Trimethylpropane is -0.88 at 20 °C (Analytical Chemistry, Perstorp Holding AB, 2009).
Water solubility
The solubility of Di-Trimethylpropanein water is 21 g/L at 20°C (Analytical Chemistry, Perstorp Holding AB, 2009).
Surface tension
The surface tension of Di-Trimethylpropane is 59 mN/m at 20°C (Analytical Chemistry, Perstorp Holding AB, 2009).
Flash point
According to "Endpoint specific guidance R.7.1.9.1" flash point does not need to be determined on solids.
Autoflammability
According to "Endpoint specific guidance R.7.1.12.1" testing does not need to be conducted when the substance melts at <160 °C.
Flammability
Di-Trimethylpropane is non flammable (Analytical Chemistry, Perstorp Holding AB, 2009).
Explosiveness
Examination of the structure indicates that there are no groups associated with explosive properties. Therefore, negative results can be predicted and no testing for explosive properties has been carried out.
Oxidising properties
Due to the structural composition of the substance it is not considered to be oxidising. The substance does not contain any of the components listed in “Endpoint specific guidance R.7.1.13.3 table R.7.1-29”. According to “Endpoint specific guidance R.7.1.13.4 no experimental testing has to be conducted if the substance due to structural composition is considered not to be oxidising.
Stability in organic solvents
The stability in organic solvents is not considered critical to ensure confidence in other test results for other endpoints. Therefore testing is not needed to be conducted according to “Endpoint specific guidance R.7.1.16”.
Dissociation constant
The calculation program SPARC has been used for the prediction and gave the result pKa 15 which indicates that the substance is not an ionisable compound. According to “Endpoint specific guidance R.7.1.17.1” the dissociation constant does not have to be conducted for substances that lack ionisable functional groups.
Viscosity
According to “Endpoint specific guidance R.7.1.18.4” viscosity determination is not required for solids.
Additional physico-chemical information
Di-Trimethylpropane is specified as "extremely ignitable" (IBExU Institut fur Sicherheitstechnik GmbH, Perstorp Specialty Chemicals AB, 2008).
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