Phosphoric acid, C14-15-branched and linear alkyl esters, potassium salts

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:

2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

thermal analysis

Specific details on test material used for the study:

Name: Phosphoric acid, C14-15 branched and linear alkyl esters, potassium salts
CAS No.: 1893414-79-3
Physical state: white solid at 20 °C
Batch No.: PU61810016
Re-certification date of batch: 09 March 2018
Purity: 100 % (UVCB, lyophilized solid, water content 0.85 % (w/w))
Stability: stable under test conditions
Storage condition of test material: Room temperature, protected from light

Key result

Melting / freezing pt.:

>= 70.5 - <= 194.9 °C

Atm. press.:

1 013 mBar

Decomposition:

no

Sublimation:

no

Preliminary Test

The test item was put into the capillary tube, fused at one end, so that the filling level was approximately 4 to 6 mm. Then the filled capillary tube was placed into the metal heating block of the instrument. A fresh sample was prepared for each measurement.

The test was started at 30 °C. To get information about the approximate melting point the metal heating block was heated at a rate of 5 K/min. During heating the test item and the temperature were monitored by the appliance so that the approximate melting point could be determined.

Main Test

A small amount of the test item was placed in a capillary tube. The filled capillary tube was inserted in the metal heating block of the device. The test was started at 65 °C with a heating rate of 0.5 K/min until melting of the sample was observed. The main test was performed in triplicate.

Conclusions:

The determined melting range of the test item was determined to be between 70.5 °C and 194.9 °C (343.7 K and 468.1 K).

Executive summary:

In a Klimisch 1 study according to OECD 102 guideline the melting range of the test item was determined to be between 70.5 °C and 194.9 °C (343.7 K and 468.1 K). According to nature of the test item as a UVCB, there was a high deviation between the three determined starting and end points of the melting range. Therefore the lowest determined temperature was used as starting point and the highest determined temperature was used as end point of the melting range.

Description of key information

The determined melting range of the test item was determined to be between 70.5 °C and 194.9 °C (343.7 K and 468.1 K).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

70.5 °C