Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Water solubility

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Water solubility:  0.0073 - 0.0088 mg/l at 23°C

Key value for chemical safety assessment

Water solubility:
0.007 mg/L
at the temperature of:
23 °C

Additional information

The solubility of the submission substance was determined in various matrices (distilled water, well-water, algal assay medium and seawater) using GC-MS. The solubility was determined by gently placing an excess amount of the substance on the surface of each matrix and a slow-stirring was applied until saturation was attained. The resulting dissolved concentration was measured using GC-MS. In distilled water, solubility value of 7.3-8.8 ppb (0.0073-0.0088 mg/l) at 23°C was obtained for the submission substance. In well-water and seawater, solubility values of 7.6 -7.9 ppb at 23°C and 9.2 -12.6 ppb at 23°C respectively were obtained. The result is considered to be reliable.

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 water solubility values of 9.1E-06 and 1.3E-01 mg/l at 20°C were determined for Vi5 -D5 and Vi3 -D3, respectively, using a validated QSAR estimation method.