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Physical & Chemical properties

Vapour pressure

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Description of key information

The vapour pressure of C14-17 chlorinated paraffins (52% chlorination) has been noted to be between 1 x 10-6 and 2 x 10-6 mm Hg (1.3 x 10-4 and 2.7 x 10-4 Pa) at 20oC. 

Key value for chemical safety assessment

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

Additional information

The vapour pressure of C14-17 chlorinated paraffins (52% chlorination) has been noted to be between 1 x 10-6 and 2 x 10-6 mm Hg (1.3 x 10-4 and 2.7 x 10-4 Pa) at 20oC (Campbell and McConnell, 1980), and at elevated temperatures as 1.07 x 10-3 Pa at 45oC, 6 x 10-3 Pa at 60oC and 0.051 Pa at 80oC (BUA, 1992; EU, 2005). A C14-17 chlorinated paraffin (45% chlorination) has a vapour pressure of 2.27 x 10-3 Pa at 40oC and 0.16 Pa at 80oC (BUA, 1992; EU, 2005).

The upper value of 2.7 x 10-4 Pa at 20oC for a C14 -17 chlorinated paraffin (52% chlorinated) has been selected as a representative value for a commercial product.