α-trimethylsilanyl-ω-trimethylsiloxypoly[oxy(methyl-3-(2-(2-methoxypropoxy)propoxy)propylsilanediyl]-co-oxy(dimethylsilane))

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

January 24, 1991

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP-study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1991

Report date:

1991

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

yes

Remarks:

test substance not coninuously stirred but intermittently.

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

GLP compliance:

yes

Type of method:

method to determine freezing temperature

Test material

Test material information

Constituent 1

Reference substance name:

α-trimethylsilanyl-ω-trimethylsiloxypoly[oxy(methyl-3-(2-(2-methoxypropoxy)propoxy)propylsilanediyl]-co-oxy(dimethylsilane))

EC Number:

406-420-4

EC Name:

α-trimethylsilanyl-ω-trimethylsiloxypoly[oxy(methyl-3-(2-(2-methoxypropoxy)propoxy)propylsilanediyl]-co-oxy(dimethylsilane))

Cas Number:

69430-40-6

Molecular formula:

Unspecified example: C18.3H46.8O5.8Si4.1

IUPAC Name:

2,2,4,4,6,12,15-heptamethyl-6-[(trimethylsilyl)oxy]-3,5,10,13,16-pentaoxa-2,4,6-trisilaheptadecane

Details on test material:

Identification: DC 5067
Description: Clear, light brown liquid
Lot Number: AB 090122
Purity: >99%
Storage conditions: In the original container at room temperature in the dark
Stability under storage conditions: Stab1e
Expiry date: December 1, 1991

Results and discussion

Melting / freezing point

Melting / freezing pt.:

> -82 - < -24 °C

Atm. press.:

ca. 1 013.25 hPa

Remarks on result:

other: In a duplicate experiment it was found that the test substance has no defined freezing point or freezing range.

Applicant's summary and conclusion

Conclusions:

No freezing point/freezing range of the test substance could be determined. The viscosity of the liquid test substance increases with decreasing temperature until finally, the test substance is completely solidified.

Executive summary:

A duplicate experiment was performed to determine the freezing point/freezing range of DC 5067. In a pretest it was found that the test substance still flows at a temperature of -24°C and is solidified at -82°C. In a duplicate experiment it was found that the test substance has no defined freezing point or freezing range. With decreasing temperature, the viscosity of the test substance increased, without showing a clear phase transition of the liquid into the solid state. In conclusion, no freezing point/freezing range of the test substance could be determined. The viscosity of the liquid test substance increases with decreasing temperature until finally, the test substance is completely solidified.