Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Appearance

At ambient temperature and pressure, Polyol PX is an amber brown solid with a slight odour (Analytical Chemistry, Perstorp Holding AB, 2010).

Melting point

The melting point of Polyol PX is 312 K (39 °C) (Analytical Chemistry, Perstorp Holding AB, 2010).

Boiling point

The boiling point of Polyol PX is 563 K (290 °C) at 101.3 kPa. The transition with onset at 290 °C is interpreted as a simultaneous boiling and decomposition (Analytical Chemistry, Perstorp Holding AB, 2010).

Density

The relative density of Polyol PX is 1.27 at 20 °C (relative to water at 4 °C) (Analytical Chemistry, Perstorp Holding AB, 2010).

Granulometry

According to "Endpoint specific guidance R.7.1.14.1" the granulometry test does not need to be conducted as Polyol PX is delivered in molten form or solidified form that will be melted before use.

Vapour pressure

The vapour pressure of the main component of Polyol PX is reported to be 0.02 Pa (5,5 -bis(hydroxymetyl)-1,3dioxan, based on MPBPWIN) (Analytical Chemistry, Perstorp Holding AB, 2010).

Partition coefficient

The partition coefficient (log Kow) for the main component (5,5 -bis(hydroxymetyl-1,3dioxan) of Polyol PX is -1.0 at 20 °C (Analytical Chemistry, Perstorp Holding AB, 2010).

Water solubility

The solubility of Polyol PX in water is > 1000 g/L at 20°C and is therefore, completely soluble (Analytical Chemistry, Perstorp Holding AB, 2010).

Surface tension

The surface tension of Polyol PX is 72 mN/m at 20°C (Analytical Chemistry, Perstorp Holding AB, 2010).

Flash point

According to "Endpoint specific guidance R.7.1.9.1" flash point is not 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

Polyol PX is non flammable (Analytical Chemistry, Perstorp Holding AB, 2010).

Explosiveness

Examination of the structures of the main components indicate 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

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

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.