Cerium doped lutetium yttrium orthosilicate

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:

2016-03-18 to 2016-08-10

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:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

capillary method

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Colour and appearance: Colourless solid
- Batch: C14-193
- Purity: 100% (w/w)
- Expiry date: 15 Dec 2016


STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: ambient (+5 to 30 °C), dark, dry

OTHER SPECIFICS
- Dry and finely ground test item

Key result

Melting / freezing pt.:

> 400 °C

The test was started at 100 °C with a heating rate of 5 K/min. At about 300 °C the colour of the test item changed to grey but it remained powdery. The test item did not melt up to a temperature of 400 °C. A higher temperature could not be achieved with the apparatus. Therefore, the melting point of the test item is defined to be above 400 °C (673.15 K).

Conclusions:

The melting point of the test item is defined to be above 400 °C (673.15 K).

Executive summary:

For the determination of the melting point the capillary method was used according to OECD 102. A small amount of the finely ground test item was placed in a capillary tube and packed tightly. The tube was heated in a metal heating block in a rate of 5 K/min starting at 100 °C. At about 300 °C the colour of the test item changed to grey but it remained powdery. The test item did not melt up to a temperature of 400 °C. A higher temperature could not be achieved with the apparatus. Therefore, the melting point of the test item is defined to be above 400 °C (673.15 K).

Description of key information

For the determination of the melting point the capillary method was used according to OECD 102. A small amount of the finely ground test item was placed in a capillary tube and packed tightly. The tube was heated in a metal heating block in a rate of 5 K/min starting at 100 °C. At about 300 °C the colour of the test item changed to grey but it remained powdery. The test item did not melt up to a temperature of 400 °C. A higher temperature could not be achieved with the apparatus. Therefore, the melting point of the test item is defined to be above 400 °C (673.15 K).