A mixture of: propan-2-one-O,O'(methoxyvinylsilandiyl)dioxime; propan-2-one-O-(dimethoxyvinylsilyl)oxime; propan-2-one-O,O',O''-(vinylsilantriyl)trioxime

Boiling point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

February 16, 2005

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

According to OECD Guideline 103 with GLP.

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

Type of method:

method according to Siwoloboff

Key result

Boiling pt.:

220 °C

Atm. press.:

98.65 kPa

Decomposition:

yes

Remarks:

Decomposition was indicated by change of colour

Decomp. temp.:

205 °C

The test substance is composed of several compounds. No simple boiling temperature can therefore be expected.

The colour of the test substance changed from yellowish to yellowish-brown at 205 °C, to brown at 220 °C, to dark brown at 240 °C and to black at approximately 265 °C. At about 220 °C the test substance started boiling and bubbles. Identical observations were made in both samples.

The test substance decomposed before and during boiling. Decomposition was indicated by change of colour starting at about 205 °C. The decomposed test substance boiled from about 220 °C on.

The calculated boiling temperatures of the three main components of the test substance are in approximative agreement with the experimentally determined results.

Conclusions:

The test substance decomposed before and during boiling. Decomposition was indicated by change of colour starting at about 205 °C.
The decomposed test substance boiled from about 220 °C on.

Executive summary:

The boiling point assay performed according to OECD guideline 103, shows that the test substance decomposed before and during boiling.

Decomposition was indicated by change of colour starting at about 205 °C. The decomposed test substance boiled from about 220 °C on.

Reference 2

Endpoint:

boiling point

Type of information:

(Q)SAR

Adequacy of study:

supporting study

Study period:

February 16, 2005

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification

Remarks:

Internationally accepted method, EPI Suite, EPA (USA)

Justification for type of information:

See attached QSAR supporting information

Principles of method if other than guideline:

Calculation by atom/fragment contribution method using the software MPBPWIN Version v. 1.41 2000, of the U.S. Environmental Protection Agency

Specific details on test material used for the study:

SMILES of components:
acetone O,O'-[methoxy(vinyl)silanediyl]oxime (VMAC2): CC( C)= NO[Si] (/C([H])=C([H])\[H])( OC)O N =C( C)C
acetone O,O',O''-(vinylsilanetriyl)oxime (VAC3): CC( C)= NO[Si] (/C( [H] )=C([H] )\[H]) (0 N=C( C)C)O N=C( C )C
acetone O-[dimethoxy(vinyl)silyl]oxime (VM2AC): CC(C)=NO[Si](/C([H])=C([H])\[H]) (OC)OC

Boiling pt.:

249.7 °C

Remarks on result:

other: acetone O,O'-[methoxy(vinyl)silanediyl]oxime

Boiling pt.:

300.7 °C

Remarks on result:

other: acetone O,O',O''-(vinylsilanetriyl)oxime

Boiling pt.:

189.6 °C

Remarks on result:

other: acetone O-[dimethoxy(vinyl)silyl]oxime

The calculated boiling temperatures of the three main components are in approximative agreement with the experimentally determined results.

Conclusions:

The calculated boiling temperatures of the three main components of the test substance were: 249.7 ºC (acetoneO,O'-[methoxy(vinyl)silanediyl]oxime); 300.7 ºC (acetoneO,O',O''-(vinylsilanetriyl)oxime) and 189.6 ºC (acetoneO-[dimethoxy(vinyl)silyl]oxime).

Executive summary:

Using the software MPBPWIN v.1.41 2000, of the U.S. Environmental Protection Agency, the calculated boiling temperatures of the three main components of the test substance were: 249.7 ºC (acetoneO,O'-[methoxy(vinyl)silanediyl]oxime); 300.7ºC (acetoneO,O',O''-(vinylsilanetriyl)oxime) and 189.6 ºC (acetoneO-[dimethoxy(vinyl)silyl]oxime).

Description of key information

The boiling point assay performed according to OECD guideline 103, shows that the test substance decomposed before and during boiling.

Decomposition was indicated by change of colour starting at about 205 °C. The decomposed test substance boiled from about 220 °C on.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

220 °C

Additional information

The boiling point assay performed according to OECD guideline 103, shows that the test substance decomposed before and during boiling.

Decomposition was indicated by change of colour starting at about 205 °C. The decomposed test substance boiled from about 220 °C on.

Using the software MPBPWIN v.1.41 2000, the calculated boiling temperatures of the three main components of the test substance were: 249.7 ºC (acetoneO,O'-[methoxy(vinyl)silanediyl]oxime); 300.7ºC (acetoneO,O',O''-(vinylsilanetriyl)oxime) and 189.6 ºC (acetoneO-[dimethoxy(vinyl)silyl]oxime).