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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Boiling point

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
GLP compliance:
no
Other quality assurance:
other: ISO 9001:2008
Type of method:
method according to Siwoloboff
Remarks:
Capillary method
Key result
Boiling pt.:
96.2 °C
Atm. press.:
1 013 hPa
Conclusions:
A boiling point value of 96.2°C at 1013 hPa was determined for the substance using a relevant test method and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable.

Description of key information

Boiling point: 96.2°C at 1013 hPa (OECD 103)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
96.2 °C

Additional information

A measured boiling point of 96.2°C at 1013 hPa was determined for the registered substance using a capillary method (method according to Siwoloboff) in accordance with OECD Test Guideline 103 and in compliance with a known quality system (ISO 9001:2008). The measured boiling point for the registered substance is expected to be driven by the boiling point of the volatile constituent (Constituent A) present at 40-60% in the registered substance. The result is however considered to be reliable and used for the chemical safety assessment (CSA).

Trimethoxy(methyl)silane, Constituent A (CAS 1185-55-3; EC No. 214-685-0) has a reported boiling point of 102°C at 1013 hPa in a handbook or collections of reliable data. Also, 3-(trimethoxysilyl)propylamine (Constituent B, CAS 13822-56-5; EC No. 237-511-5) has a measured boiling point of 198.4°C (471.6 K) at 1013 hPa using a photocell detection (capillary) method in accordance with OECD Test Guideline 103 and in compliance with a known quality system (ISO 9001:2008). In addition to the photocell detection method, a DSC method was also performed by the same author (Haas 2017). In the DSC method, a boiling point value of 198.8°C at 963 hPa was obtained for Constituent B of the submission substance. 3-(Trimethoxysilyl)propylamine also has a predicted boiling point of 190°C at 1013 hPa using a validated QSAR estimation method.

Constituents C, D, E, F and G are expected to have higher boiling points than Constituent B since these are higher molecular weight compounds. The molecular weights of Constituents C, D, E, F and G are in the range 226.38 to 860.34 g/mol. In comparison, the molecular weight of Constituent B is 179.29 g/mol.