2,2-dimethyl-1,3-dioxolan-4-ylmethanol

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:

From 2 October 2013 to 25 November 2013

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP study performed according international guidelines. No deviation from the guidelines was observed during the test.

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7200 (Melting Point / Melting Range)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

GLP compliance:

yes

Type of method:

method to determine freezing temperature

Melting / freezing pt.:

< -50 °C

Atm. press.:

29.91 other: inches Hg

Decomposition:

no

The freezing point analysis of the test substance was performed using the freezing temperature method. This method has a low temperature threshold of 223K or -50.0°C. The test substance was clear, colorless, and free of suspended material prior to testing. After warming to room temperature (after each freezing point determination), no physical changes were observed. The test substance started to gel or thicken at approximately -35 to -40°C. At -50.0°C, the test substance had a jelly-like consistency, and was still very mixable.

The results of the three aliquots were shown below:

Subsample ID (411C-103-)	Subsample Amount (g)	Barometric Pressure (inches Hg)*	Freezing point °C (K)**
1	10.0126	29.91	<-50 (<223)
2	10.0732	29.91	<-50 (<223)
3	10.0477	29.91	<-50 (<223)
Overall mean		29.91	<-50 (<223)
Overall Standard Deviation		0.0	0.0 (0.0)
Overall% CV		0.00	0.0 (0.00)

* 29.91 inches Hg equal to 101287Pa

** K=°C+273.15

Conclusions:

The test substance did not freeze or solidify at the low temperature threshold of the freezing temperature method or -50.0°C (223 K). Therefore, the freezing point was reported as less than -50°C (223K).

Executive summary:

The freezing point analysis of the test substance was performed using the freezing temperature method according to U.S EPA Product Test Guidelines, OPPTS 830.7200, OECD guideline 102 and GLP. No deviation from the guideline was observed during the study.

 

The test substance was mixed well via inversion prior to sampling. Triplicate aliquots of the test substance, approximately 10.0 grams each, were weighed into glass test tubes. Each sample aliquot was placed individually into the acetone/dry ice bath. The sample was continuously stirred using a metal spatula. As the sample cooled and thickened, the temperature was monitored, measured and recorded at 10 second intervals until the temperature remained constant for five consecutive readings (± 0.5°C), if applicable. This temperature equilibrium was determined to be the freezing point, if applicable. The elapsed time was recorded using a stopwatch. The barometric pressure was recorded at the time of each freezing point determination using a Control Company barometer . The testing was conducted inside an exhaust hood.

 

The test substance did not freeze or solidify at the low temperature threshold of the freezing temperature method or -50.0°C (223 K). It was concluded that the freezing point of the test substance is lower than -50°C(< 223K) at 29.1 inches Hg (101287 Pa).

 

Description of key information

Experimental value of freezing point at 29.9 inches Hg (101287 Pa):<-50°C  

Additional information

The freezing point analysis of the test substance was performed using the freezing temperature method according to U.S EPA Product Test Guidelines, OPPTS 830.7200, OECD guideline 102 and GLP. No deviation from the guideline was observed during the study.