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Description of key information

Density: 0.9875 g/cm3 at 20±0.02°C

Key value for chemical safety assessment

Relative density at 20C:

Additional information

A measured density value of 0.9875 g/cm3 at 20±0.02°C was obtained for the submission substance using a calibrated 10 ml pycnometer. The result is considered to be reliable and is selected as key study. A second measured relative density value of 0.988 g/cm³ at 20 °C was determined for the low purity form of the submission substance using a pycnometer method in accordance with OECD Test Guideline 109 and in compliance with GLP.

2,4,6,8,10 -Pentamethyl-2,4,6,8,10-pentavinylcyclopentasiloxane Vi5-D5 (CAS No: 17704-22-2; impurity 1) and 2,4,6-trimethyl-2,4,6-trivinylcyclotrisiloxane Vi3-D3 (CAS No: 3901-77-7; impurity 2) may be present as impurities. Predicted density values of 0.95 g/cm3and 0.92 g/cm3at 20°C were determined for Vi5-D5 and Vi3-D3, respectively.