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EC number: 236-112-3 | CAS number: 13170-23-5
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February 9, 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- According to EU Method A.1. GLP Study.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- method to determine freezing temperature
- Remarks:
- (PN-ISO 1392: Method for the determination of the freezing point: 2002)
- Key result
- Melting / freezing pt.:
- < -35.2 °C
- Remarks on result:
- other: (temperature of initial freezing point)
- Conclusions:
- The crystallization of di(tert-butoxy)diacetoxysilane was not visually observed up to -35.2 °C.
- Executive summary:
The determination of the freezing point of di(tert-butoxy)diacetoxysilane was performed according to EU Method A.1 in conformity with OECD Guideline 102 (PN-ISO 1392: Method for the determination of the freezing point). The crystallization of di(tert-butoxy)diacetoxysilane was not visually observed up to -35.2 °C. According to Column 2 of REACH Annex VII, the study does not need to be conducted below a lower limit of –20 °C.
Reference
During the test the temperature of samples decreased at a constant rate, for measurement No. 1 to the temperature of -35.2 ºC and for measurement No. 2 to the temperature of -30.5 ºC. The crystallization was not observed during all measurements.
The crystallization of di(tert-butoxy)diacetoxysilane was not visually observed up to -35.2 °C.
Description of key information
Key study: EU Method A.1. GLP study. The crystallization of diacetoxydi-tert-butoxysilane was not visually observed up to -35.2 °C.
Key value for chemical safety assessment
Additional information
Key study: The determination of the freezing point of diacetoxydi-tert-butoxysilane was performed according to EU Method A.1 in conformity with OECD Guideline 102 (PN-ISO 1392: Method for the determination of the freezing point). The crystallization of diacetoxydi-tert-butoxysilane was not visually observed up to -35.2 °C. According to Column 2 of REACH Annex VII, the study does not need to be conducted below a lower limit of –20 °C.
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