Registration Dossier
Registration Dossier
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EC number: 237-041-0 | CAS number: 13596-23-1
Boiling point
Administrative data
Link to relevant study record(s)
Description of key information
Boiling point: 216°C
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 216 °C
Additional information
Octachlorotrisilane hydrolyses very rapidly in contact with moisture. The boiling point study is not technically feasible as decomposition occurs immediately on contact with atmospheric moisture during sample preparation. Complete exclusion of moisture is not possible.
A boiling point of 216°C was reported in the CRC Handbook (2010) p4-87 (Haynes 2010). Data are from specific sources which are peer-reviewed and cite the original source of the data. A boiling point range of 210-213°C at 1013hPa (ca. 96°C at 13hPa) was reported in a secondary source (MSDS). The original reference was not available for review.
A boiling point of 204°C was determined by extrapolation of data from a vapour pressure study. However, the method used in the study is susceptible to the presence of volatile impurities in the sample which are not properly degassed prior to the measurement. The study report lacks detailed information on the purity, physical state or batch number of the substance and the sample handling during the study. The study report also indicates that decomposition was observed during the vapour pressure study from about 100°C.The boiling point of 204°C is therefore disregarded.
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