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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Vapour pressure

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Description of key information

Vapour pressure [registration substance]: 390 Pa at 20°C [OECD 104]

Key value for chemical safety assessment

Vapour pressure:
390 Pa
at the temperature of:
20 °C

Additional information

A vapour pressure value of 390 Pa at 20°C was determined for the registration substance in a reliable study conducted according to an appropriate test protocol.

The registration substance is a multi-constituent substance containing four constituents, decamethyltetrasiloxane (L4, CAS 141-62-8), dodecamethylpentasiloxane (L5, CAS 141-63-9), hexamethyldisiloxane (HMDS, CAS 107-46-0) and octamethyltrisiloxane (L3, CAS 107-51-7). The environmental hazard assessment is based on the properties of the constituents, therefore data for each constituent are also reported.