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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

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Propane-1,2-diol, propoxylated’ is a very viscous, amber coloured liquid at room temperature and atmospheric pressure with melting point below - 20 ˚C (Harlan Laboratories Ltd., 2010a). It boils at ca. 254 ˚C with possible decomposition (Harlan Laboratories Ltd., 2010a). Its relative density at 20 ˚C is 1.02 (Harlan Laboratories Ltd., 2010a), vapour pressure 0.2 Pa at 25°C (Harlan Laboratories Ltd., 2010b). The substance is essentially miscible with water at room temperature (Harlan Laboratories, 2010a) and its log Kow lies in the range < 0.3 -1.13 (Harlan Laboratories, 2010a). The substance is not surface active (surface tension of 1.07 g/L aqueous solution at 21 °C is 68.9 mN/m) (Harlan Laboratories, 2010a). The viscosity of ‘Propane-1,2-diol, propoxylated’ is 105 mm2/s at 20 ˚C and 30.8 mm2/s at 40 ˚C. Based on the flash point of 137±2°C at 101.28 kPa (Harlan Laboratories Ltd., 2010b), classification of propane-1,2-diol, propoxylated’ as flammable is not warranted in accordance with Directive 67/548/EEC and EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008.

The auto-ignition temperature of propane-1,2-diol, propoxylated’ is 280 ± 5°C at 99.94-100.97 kPa (Harlan Laboratories Ltd., 2010b).The substance is not expected to have explosive and oxidising properties, therefore classification in accordance with EU Directive 67/548/EEC and EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008 is not warranted.

The substance remains undissociated in water, as it does not contain chemical groups which can undergo dissociation.

In accordance with Column 1 or 2of REACH Annex VII/IX and/or with Section 1 of REACH Annex XI and/or the REACH Guidance on Information Requirements and Chemical Safety Assessment (chapter R7. A), data on the particle size distribution, pyrophoricity, water reactivity and stability in organic solvents and identity of relevant degradation products do not need to be conducted.