Oxacycloheptadec-10-en-2-one

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Data is from experimental study report

Qualifier:

according to guideline

Guideline:

other: as mentioned below

Principles of method if other than guideline:

The Freezing point determination of test chemical was done using crushed ice and salt bath. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test item was placed in the cooling bath.

GLP compliance:

no

Type of method:

other: crushed ice and salt bath

Key result

Melting / freezing pt.:

-11.56 °C

Atm. press.:

97 720 Pa

Decomposition:

no

Sublimation:

no

Remarks on result:

other: Other details not known

TEST DESCRIPTION AND RESULTS

Method Details		Observations	Remarks if, any
Method	Method according to Cooling Curve
Principle of Freezing pointtest	The freezing point of a pure sample is determined by making measurements of the temperature as a function of time while the sample is submerged in a constant temperature bath at a temperature below that of the expected freezing point of the sample. The data (Temperaturevs.time) is plotted; this plot is known as acooling curve. The freezing point is the value of temperature in the flat portion of the curve.		-
Volume of test item used	g	1.0 g	-
Type of cooling bath used	·        Cold Water ·        Crushed Ice ·        Crushed Ice-Salt ·        Dry Ice ·        Other (specify)	Crushed Ice-Salt	-
Type and model no. of temperature sensor used	·        Glass thermometer ·        Thermocouple ·        Thermistor ·        Other (specify)	Thermistor Probe	-
Atmospheric pressure	hPa	977.2	-
Freezing point (Mean)	°C	-11.56°C	-

Conclusions:

The Freezing point determination of test chemical was done using crushed ice and salt bath. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test chemical was placed in the cooling bath. Crystallization was observed at -11.56 °C. Hence, the freezing point was concluded to be -11.56 °C at 97720 hPa.

Executive summary:

The Freezing point determination of test chemical was done using crushed ice and salt bath. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test chemical was placed in the cooling bath. Crystallization was observed at -11.56 °C. Hence, the freezing point was concluded to be -11.56 °C at 97720 hPa.

Description of key information

Based on the available data from study report,the Freezing point determination of test chemical was done using crushed ice and salt bath. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test chemical was placed in the cooling bath. Crystallization was observed at -11.56 °C. Hence, the freezing point was concluded to be -11.56 °C at 97720 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-11.56 °C

Additional information

Based on the available data from study report,the Freezing point determination of test chemical was done using crushed ice and salt bath. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test chemical was placed in the cooling bath. Crystallization was observed at -11.56 °C. Hence, the freezing point was concluded to be -11.56 °C at 97720 hPa.