Butan-2-one O,O',O''-(vinylsilylidyne)trioxime

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

November 19, 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Test method in accordance with EU method A.2 and OECD Guideline 103. GLP study.

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

method according to Siwoloboff

Key result

Atm. press.:

1 008.3 hPa

Decomposition:

yes

Decomp. temp.:

>= 223 - <= 224 °C

Remarks on result:

other: The substance decomposes below the boiling point

The value of boiling point was determined visually. The preliminary study and measurements were performed under atmospheric pressure of 1008.3 hPa. The preliminary study was carried out in order to determine the boiling temperature range of the substance (233.0 -244.0 °C), but the test sample decomposed below the boiling point (temperature range: 178.0-223.0 ºC).

Three series of measurements were performed in the temperature range 200–400°C. Together with temperature increase, the test item in outer capillary grows dark (from about 223.0 ºC). As a result of the gradual heating and in the whole test temperature range, single bubbles at different intervals give off. Continuous air bubbles movement from a capillary was observed. For various temperatures, the sample in the capillary was of dark color. Received decomposition temperature range was 223.0–224.0 °C. From visual observation it is evident that the substance decomposes below the boiling point under atmospheric pressure of 1008.3 hPa.

Sample	Decomposition temperature, °C
1	223.5
2	223.4
3	223.5
Mean ± SD	223.5 ± 0.1

Conclusions:

The test substance decomposes before boiling. The decomposition temperature was determined to be in the range of 223-224 ºC at 1008.3 hPa.

Executive summary:

A determination of the boiling point temperature was performed in accordance with EU method A.2 and OECD Guideline 103. GLP study. Decomposition was observed in the temperature range of 223 -224 ºC. It was evident that the test item decomposes below boiling point under atmospheric pressure of 1008.3 hPa.

Description of key information

Key study: EU method A.2, OECD Guideline 103. GLP study. The test substance decomposes before boling in a temperature range of 223-224 ºC at 1008.3 hPa.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

223 °C

Additional information

Key study: A determination of the boiling point temperature was performed in accordance with EU method A.2 and OECD Guideline 103. GLP study. Decomposition was observed in the temperature range of 223 -224 ºC. It was evident that the test item decomposes below boiling point under atmospheric pressure of 1008.3 hPa.