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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August 12, 2021
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Cross-reference
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August 12, 2021
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Principles of method if other than guideline:
- Principle of test: Dynamic mechanical analysis (DMA)
- Short description of test conditions: DSC was first used to try to determine the freezing point. However, no freezing was seen. Therefore for DMA was used.
- Parameters analysed / observed: Crystallization of the material
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
-51 °C
Atm. press.:
760 Torr
Decomposition:
no
Conclusions:
The freezing point is -51 degrees C.
Executive summary:

The freezing point of the test substance was determined.  The first method used to try to determine the freezing point was DSC.  However, no crystallization was seen.  DMA was then used.  An increase of viscosity was taken as the freezing point.  Based on extrapolation the freezing point was -51 degrees C.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2021
Report date:
2021

Materials and methods

Principles of method if other than guideline:
- Principle of test: Dynamic mechanical analysis (DMA)
- Short description of test conditions: DSC was first used to try to determine the freezing point. However, no freezing was seen. Therefore for DMA was used.
- Parameters analysed / observed: Crystallization of the material
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Test material

Constituent 1
Chemical structure
Reference substance name:
6-Hydroxy-2,6-dimethylheptan-1-al
Cas Number:
62439-42-3
Molecular formula:
C9H18O2
IUPAC Name:
6-Hydroxy-2,6-dimethylheptan-1-al
Test material form:
liquid

Results and discussion

Physical state at 20°C and 1013 hPa:
liquid
Form / colour / odour
Key result
Form:
liquid
Colour:
Colorless to pale yellow
Odour:
other: Fruity to floral
Substance type:
organic

Applicant's summary and conclusion

Conclusions:
The substance is a liquid at room temperature.
Executive summary:

The freezing point of the test substance was determined.  The first method used to try to determine the freezing point was DSC.  However, no crystallization was seen.  DMA was then used.  An increase of viscosity was taken as the freezing point.  Based on extrapolation the freezing point was -51 degrees C.  The substance is therefore a liquid at room temperature.