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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.

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Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure of hydrocarbons, C13-C20, n-alkanes, iso-alkanes, cyclics, 40-60% aromatics at 20 deg C is typically 0.001 kPa or below. 

Key value for chemical safety assessment

Additional information

There are no data available on the vapou pressure for hydrocarbons, C13-C20, n-alkanes, iso-alkanes, cyclics, 40-60% aromatics. Based on an analogue approach data are read-across to both, hydrocarbons, C14-C18, n-alkanes, isoalkanes, cyclics, aromatics (2-30%) and hydrocarbons, C16-C20, n-alkanes, isoalkanes, cyclics, aromatics (2-30%), in order to cover lower and upper ends of carbon range.

ExxonMobil Chemical (2010a) calculated the vapour pressure to be 0.001 kPa at 20 °C, using the ESIG tool, for hydrocarbons, C14-C18, n-alkanes, isoalkanes, cyclics, aromatics (2-30%). For hydrocarbons, C16-C20, n-alkanes, isoalkanes, cyclics, aromatics (2-30%), data calculated by ExxonMobil Chemical (2010b) resulted in a vapour pressure < 0.001 kPa at 20 °C.

A justification for the use of mentioned analogue substances for read-across is attached to IUCLID section 13.