Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride

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

Study period:

2016-10-26 – 2016-10-26

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Experimental result using standard method of analysis

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.

GLP compliance:

not specified

Type of method:

other: standard laboratory method

Key result

Melting / freezing pt.:

-14.4 °C

Atm. press.:

975.9 hPa

Remarks on result:

other: other details not available

Method Details		Observations
Method	Freezing Temperature Method	-
Principle of Freezing Point test	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 (Temperature vs. time) is plotted; this plot is known as a cooling curve. The freezing point is the value of temperature in the flat portion of the curve.	-
Quantity of test item used	g	1 ml
Type of cooling bath used	·         ·         ·         ·         ·	Crushed Ice- Salt
Type and model no. of temperature sensor used	·         ·         ·         ·	Thermistor
Atmospheric pressure	hPa	975.9 hPa
Freezing point °C	°C	- 14.4 °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 item was placed in the cooling bath. The mean freezing point was found to be -14.4°C at 975.9 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 item was placed in the cooling bath. The mean freezing point was found to be -14.4°C at 975.9 hPa.

Description of key information

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. The mean freezing point was found to be -14.4°C at 975.9 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-14.4 °C

Additional information

Tthe 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. The mean freezing point was determined to be -14.4°C at 975.9 hPa.

As per the available data for freezing point from laboratory report, the freezing point value determined to be -14.4 degree C at 975.9 hpa. As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of freezing point as -14.4 degree C at 975.9 hpa thus considered as key study for the chemical safety assessment.