Reaction mass of 2,6-Bis[(dimethylamino)methyl]-4-(1-{3-[(dimethylamino)methyl]-4-hydroxyphenyl}-1-methylethyl)phenol and 4-(1-{3,5-Bis[(dimethylamino)methyl]-4-hydroxyphenyl}-1-methylethyl)-2,6-bis[(dimethylamino)methyl]phenol

Stability: thermal, sunlight, metals

Link to relevant study record(s)

Reference

Endpoint:

thermal stability

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 113 (Screening Test for Thermal Stability and Stability in Air)

Qualifier:

equivalent or similar to guideline

Guideline:

other: OECD Guideline 102 (Melting point / Melting Range)

Qualifier:

equivalent or similar to guideline

Guideline:

other: EU Method A. 1 (Melting / Freezing Temperature)

GLP compliance:

yes (incl. QA statement)

Test substance thermally stable:

no

Remarks:

The unsteady base line and inconstant thermal effects wihin the DTA/DSC could be interpreted as decomposition of the test item.

Operating temp.:

>= 25 - <= 450 °C

At room temperature the substance is solid.

Between 25 °C and 450 °C no definite melting could be observed. In the same temperature range no definite boiling point was detectable.

Two endothermic effects were visible between approx. 30 °C and 95 °C indicating a large melting range.

Between approx. 230 °C and 320 °C and approx. 330 °C and 450 °C further endothermic effects were observed. Since no steep endothermic signal could be detected there is no indication for a definite boiling point. The unsteady base line and inconstant thermal effects could be interpreted as decomposition of the test item.

Conclusions:

The unsteady base line and inconstant thermal effects within the DTA/DSC could be interpreted as decomposition of the test item.

Executive summary:

A thermal stability study according to OECD 113 was performed. HPP 12879 -1 was heated up from 25 °C to 450 °C (heating rate 5 K/min) in a DTA/DSC-system. The substance is thermally not stable.

Two endothermic effects were visible between approx. 30 °C and 95 °C indicating a large melting range.

Between approx. 230 °C and 320 °C and approx. 330 °C and 450 °C further endothermic effects were observed. The unsteady base line and inconstant thermal effects within the DTA/DSC could be interpreted as decomposition of the test item.

Description of key information

The unsteady base line and inconstant thermal effects within the DTA/DSC could be interpreted as decomposition of the test item.