4-methyl-salicylamide

Stability: thermal, sunlight, metals

Administrative data

Endpoint:

stability: thermal, sunlight, metals, other

Remarks:

Migrated from section 'Stability: thermal, sunlight, metals'

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2003

Report date:

2003

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: OECD 113: Screening test for Thermal Stability and stability in air (1981). VDI 2263: "Test Methods for the Determination of the Safety Characteristics of Dusts", May 1990.

GLP compliance:

yes

Test material

Reference

Name:

Unnamed

Type:

Constituent

Test material form:

solid: crystalline

Results and discussion

For thermal stability study

Test substance thermally stable:

yes

Operating temperature

Operating temp.:

> 25 - < 270 °C

Remarks on result:

other: Heating rate: 5°C/min

Any other information on results incl. tables

First experiment:

The TG-curve shows loss of mass above 158°C (raw temperature: 161°C); the rate of mass loss increased with increasing temperature. In the DTA-curve an endothermic peak is observed between 174°C and 210°C (raw temperature range: 177°C - 213°C). This effect is caused by melting of the test substance. The extrapolated onset temperature of the melting peak is 184°C (raw temperature: 187°C). Above 210°C (raw temperature: 213°C) an endothermic effect which increased with increasing temperature was observed. This effect, together with the observed mass loss, is probably caused by evaporation of the test substance. Visual inspection of the sample after the experiment learned that the sample had been molten and had almost completely evaporated.

Second experiment:

The TG-curve shows loss of mass above 160°C (raw temperature: 163°C); the rate of mass loss increased with increasing temperature. In the DTA-curve an endothermic peak is observed between 177°C and 208°C (raw temperature range: 180°C- 211°C). This effect is caused by melting of the test substance. The extrapolated onset temperature of the melting peak is 184°C (raw temperature: 187°C). Above 208°C (raw temperature: 211°C) an endothermic effect which increased with increasing temperature was observed. This effect, together with the observed mass loss, is probably caused by evaporation of the test substance. Visual inspection of the sample after the experiment learned that the sample had been molten and had almost completely evaporated.

No indications for instability of the test substance were observed at temperatures below 150°C (423K).

Applicant's summary and conclusion

Conclusions:

thermally stable up to 150°C