[No public or meaningful name is available]

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Remarks:

verified by capillary method

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch number of test material: 4133/00-K0
- Expiration date of the lot/batch:
June 08, 2021
- Purity test date:
Certificate dated from December 03, 2020, Umicore, Germany

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material:
Room temperature (10 °C to 30 °C), dark, dry

FORM OF TEST MATERIAL
- Content: Pt 1.820 % (ICP-OES)
- Form: liquid
- Appearance: Pale yellow clear liquid

Boiling pt.:

> 25 - < 315 °C

Atm. press.:

1 013.3 hPa

Decomposition:

yes

Remarks:

Decomposition was observed starting at approx. 130 °C.

Table 2: Boiling point (DSC measurement)

Ident No.	Test item / mg	Starting temperature / °C	Final test temperature / °C	Temperature range (endo-thermal) / °C	Onset (boiling) / °C	Crucible	Observations after the measurement
39391	9.69	25	500	25 –190 200 –315	87.2 243.3	open glass	black residue, mass loss: 95 %
39392	13.35	25	350	25 –190 240 –315	96.4 255.1	open glass	brown residue, mass loss: 95 %

 

Table 3: Results of the capillary method

No.	Set point / °C	Heating rate / K/min	End point / °C	Remarks
1	25	10	300	Starting at approx. 62 °C: The test item was still a pale-yellow clear liquid, occasionally, the formation of tiny bubbles rising to the surface was observed. Starting at approx. 86 °C: Unsteady formation of larger bubbles. Starting at approx. 95 °C: Steady formation of larger bubbles accompanied by evaporation of approx. 80 % of the liquid test item. Starting at approx. 130 °C: The test item turned into a yellow-brown liquid and the formation of tiny bubbles was observed. Starting at approx. 180 °C: Further discolouration into a red-brown liquid. Starting at approx. 215 °C: Further discolouration into a dark-brown liquid and the formation of tiny bubbles could be observed. Starting at approx. 285 °C: Further discolouration into a black-brown liquid and the formation of unsteady violent formation of bubbles. Approx. 290 - 300 °C: No further change (test item not fully evaporated).

Conclusions:

The test item boiled under decomposition within a range of 25 – 315 °C.

Executive summary:

Huber-Lohr (2021) is a GLP-compliant study following OECD guideline 103 and EU method A2. It is reliable without restrictions and can be used as a key study for this endpoint. The boiling point was measured by DSC measurements and by capillary tubes in a metal block. The test item had a wide boiling range of 25 – 315 °C according to EuropeanCommission Regulation (EC) No. 440/2008, A.2. as well as OECD 103 (1995) at atmospheric pressure (1013.3 hPa). The test item boiled only partially. The test item boiled under decomposition.

Description of key information

The test item boiled under decomposition within a range of 25 – 315 °C.

Additional information

Huber-Lohr (2021) is a GLP-compliant study following OECD guideline 103 and EU method A2. It is reliable without restrictions and can be used as a key study for this endpoint. The boiling point was measured by DSC measurements and by capillary tubes in a metal block. The test item had a wide boiling range of 25 – 315 °C according to EuropeanCommission Regulation (EC) No. 440/2008, A.2. as well as OECD 103 (1995) at atmospheric pressure (1013.3 hPa). The test item boiled only partially. The test item boiled under decomposition.