Propylidynetrimethanol, propoxylated

Endpoint summary

Additional information

Appearance / physical state / colour

The substance is a clear and colourless liquid (BASF, 2002).

 

Melting point / freezing point

The melting point determined by capillary method was -28.6 ºC and -18.4 ºC in two independent measurements.

 

Boiling point

Boiling point was investigated using the EU method A2 (in line with OECD 103). The test item showed a defined decomposition temperature with volatile components forming bubbles and the residue darkening. Therefore, the detected "boiling point" of 243 ºC (516 K) should be stated as "decomposition temperature"..

 

Density

The relative density is 1.05 at 20° C.

 

Particle size distribution (Granulometry)

Waiving:

In accordance with column 2 of REACH Annex VII, the study does not need to be conducted as the substance is marketed or used in a non solid or granular form.

 

Vapour pressure

The vapour pressure is 0.00179 Pa at 20°C.

 

Partition coefficient

The structure-fragment calculation method indicates a log Pow range of 0.01 to 1.50 for components of this UVCB mixture. The upper limit value of log Pow = 1.50 is used to conservatively represent partitioning of the components of this UVCB substance in the chemical safety assessment.

 

Water solubility

Water solubility was 100 g/L at 20 °C.

 

Surface tension

Surface tension (at 0.1% and 20 °C) 56.92 mN/m.

 

Flash point

Flashpoint: 184 °C.

 

Auto flammability

Autoflammability was investigated using the EU method A.15. The autoignition temperature was determined as 325 °C.

 

Flammability

Waived: Non-flammable in contact with water or damp air.

 

Explosiveness

In accordance with column 2 of REACH Annex VII, the study does not need to be conducted, as the substance does not contain a chemical moiety suggesting a potential for explosivity.

           

Oxidising properties

In accordance with column 2 of REACH Annex VII, the study does not need to be conducted, as the substance does not contain a chemical moiety suggesting an oxidising potential.

 

Stability in organic solvents and identity of relevant degradation products,

Data waiving:

According to Column 1 of Annex IX (EU REACH), testing is only required if the stability of the substance is considered to be critical. The guidance defines potentially critical as: (i) for solubility measurement (e.g. for octanol water distribution), (ii) for fortification or calibration standards, (iii) for dosing using a solvent in ecotoxicity studies, and (iv) for sample preparation in for analytical verification or monitoring programs. None of the above applies to the substance. Therefore testing of stability in organic solvents is deemed scientifically unjustified.

 

Dissociation constant

Predicted values of pKa for lowest- and highest-molecular weight homologues of this UVCB mixture range from 14.0 to 15.3. Therefore, the components are expected to occur as fully- or partly-ionized species in the environment.

 

Viscosity

Viscosity at 20ºC: 3071 mPa s