Reaction product of salicylaldehyde and formaldehyde and phenol

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

16 October 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

1995

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

method according to Siwoloboff

Key result

Atm. press.:

98.4 kPa

Decomposition:

yes

Decomp. temp.:

>= 270 °C

Remarks on result:

other: No boiling point was observed.

The tests were carried out at 98.4 kPa atmospheric pressure.

The first bubbles appeared at about 270°C during the preliminary test and the test material boiled seemingly at about 313°C. In parallel, the test material became black and charred. Considering, that the transition and the changes happened during an about 40°C range, it could indicate, that some degradation process occurred instead of boiling.

In the main study, the pre-set temperature was 295°C, where rhythmical bubbles appeared immediately, but the formation of bubbles stopped at about 300°C without real boiling, and the consistency of the test material was changed to black and charred.

Based on the preliminary and the main tests, no boiling point was observed, but the test material started to degrade above 270°C, and charred at about 300°C without boiling.

Conclusions:

Under the conditions of the study no boiling point was observed, but the test material started to degrade above 270°C, and charred at about 300°C without boiling.

Executive summary:

The boiling point of the test material was assessed in accordance with the standardised guidelines OECD 103 and EU Method A.2 under GLP conditions.

The boiling point of the test material was determined by the capillary method using a metal heating block. The principle of study was based on the Siwoloboff method. A small amount of the test material filled in a capillary was heated with 0.5°C/minute rate. During the controlled heating the appearance, consistency and colour of the liquid sample were observed and registered. The boiling point corresponds to the temperature where air bubbles are continuously formed inside the liquid sample. The test material was assessed visually for any possible changes in its appearance, consistency and colour.

Based on the preliminary and the main tests, no boiling point was observed, but the test material started to degrade above 270°C, and charred at about 300°C without boiling.

Description of key information

Under the conditions of the study no boiling point was observed, but the test material started to degrade above 270°C, and charred at about 300°C without boiling.

Additional information

The boiling point of the test material was assessed in accordance with the standardised guidelines OECD 103 and EU Method A.2 under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

The boiling point of the test material was determined by the capillary method using a metal heating block. The principle of the study was based on the Siwoloboff method. A small amount of the test material filled in a capillary was heated with 0.5°C/minute rate. During the controlled heating the appearance, consistency and colour of the liquid sample were observed and registered. The boiling point corresponds to the temperature where air bubbles are continuously formed inside the liquid sample. The test material was assessed visually for any possible changes in its appearance, consistency and colour.

Based on the preliminary and the main tests, no boiling point was observed, but the test material started to degrade above 270°C, and charred at about 300°C without boiling.