Registration Dossier
Registration Dossier
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EC number: 246-770-3 | CAS number: 25265-71-8
Endpoint summary
Administrative data
Description of key information
Additional information
Dipropylene glycol is a colourless, odourless, very hygroscopic liquid, which does not crystallise above - 20 °C (Harlan Laboratories Ltd., 2010a) and with a boiling point of 227 ºC (Harlan Laboratories Ltd., 2010a). The relative density of dipropylene glycol is 1.02 at 20 °C (Harlan Laboratories Ltd., 2010a).
The vapour pressure of dipropylene glycol is 1.3 Pa at 25 °C (Harlan Laboratories Ltd., 2010b). Dipropylene glycol is fully miscible with water at 20 °C (Harlan Laboratories Ltd., 2010a). The octanol/water partition coefficient (log Pow) was determined using the shake-flask method (Harlan Laboratories Ltd., 2010a) and is equal to -0.462. Dipropylene glycol has a kinematic viscosity of 118 mm2/s at 20 °C and 32 mm2/s at 40 °C (Harlan Laboratories Ltd., 2010a).
The substance has a flash point of 130 °C (Harlan Laboratories Ltd., 2010b). Based on this value, classification for flammable properties is not warranted in accordance with EU Directive 67/548/EEC and EU Classification, Labeling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008. The auto-ignition temperature of dipropylene glycol is 332°C (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, Labeling 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 2 of 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.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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