Registration Dossier
Registration Dossier
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EC number: 310-288-2 | CAS number: 161907-78-4 A complex mixture of oxygenated hydrocarbons produced by the distillation of residues from the manufacture of ethylene glycol monoethyl ether. It consists predominantly of a mixture of di-, tri-, tetra- and pentaethylene glycol monoethyl ethers having carbon numbers predominantly in the range C6 to C12 and boiling in the range of approximately 200°C to 300°C (392°F to 572°F).
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
Measured data for 2-(2-(2-ethoxyethoxy)ethoxy)ethanol: -18.7, -18.8, -19, -44C
QSAR prediction 2-(2-(2-ethoxyethoxy)ethoxy)ethanol: 35C.
QSAR prediction for 3,6,9,12-tetraoxatetradecan-1-ol: 72C
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 253 K
Additional information
A number of measured values are available for the melting point a major component of this UVCB substance, 2 -(2 -(2 -ethoxyethoxy)ethoxy)ethanol. Three are very similar and it is unclear whether these are slightly imprecise reporting of the same original experimental value. Another significantly different value is available from a secondary source. A QSAR considered as reliable predicts that the melting point of this substance will be much higher at 35C. The same QSAR predicts that the melting point of the other major component (the next member of this particular glycol ether series) will be 72C. Clearly the QSAR over predicts the melting point but it is reasonable to assume that melting point of the higher molecular weight members of the series of molecules making up this UVCB substance will increase. On the other hand, the lower molecular weight members will act as solvents for the higher molecular weight members. An expert assessment leads to the conclusion weighing up the measured data leads to a conclusion that the melting point is likely to be well below zero and a figure of <20C is retained as the key parameter for this end point
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