Vinyl propionate

Stability: thermal, sunlight, metals

Administrative data

Endpoint:

thermal stability

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

2015

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: comparable to guideline study without detailed documentation

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Principles of method if other than guideline:

Differential Scanning Calorimetry

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Vinyl propionate

EC Number:

203-293-5

EC Name:

Vinyl propionate

Cas Number:

105-38-4

Molecular formula:

C5H8O2

IUPAC Name:

ethenyl propanoate

impurity 1

Reference substance name:

Unknown impurities.

Molecular formula:

Not available as unknown impurities.

IUPAC Name:

Unknown impurities.

impurity 2

Reference substance name:

Water

EC Number:

231-791-2

EC Name:

Water

Cas Number:

7732-18-5

Molecular formula:

H2O

IUPAC Name:

Oxidane

Test material form:

liquid: volatile

Details on test material:

Batch No: 57161235
Storage: Room temperature (approx. 20°C)

Results and discussion

For thermal stability study

Test substance thermally stable:

yes

Remarks:

Exothermic effects in the temperature range of 189-308°C

Operating temperature

Key result

Operating temp.:

>= 189 - <= 308 °C

Sublimation:

not determined

Transformation products:

not specified

Any other information on results incl. tables

The results of the DSC measurements are summarized in the following table:

Heating rate °C/min	Sample weight / mg	T (onset) °C	T (PM) °C	DeltaH J/g	Effect
2.5	4.6	189	226	130	Medium exotherm with very high decomposition power.
2.5	4.6	266	318	300	Strong exotherm with medium decomposition power over a wide temperature range (266 - 385 °C).
2.5	4.02	189	226	140	Medium exotherm with very high decomposition power.
2.5	4.02	266	350	340	Strong exotherm with medium decomposition power over a wide temperature range (266 - 386 °C).
1	5.33	193	211	170	Medium exotherm with very high decomposition power.
1	5.33	246	348	190	Strong exotherm with medium decomposition power over a wide temperature range (246 - 357 °C).
4	5.15	209	230	90	Small exotherm with very high decomposition power.
4	5.15	259	339	550	Very high exotherm with medium decomposition power over a wide temperature range (259 - 400 °C).
8	5.01	220	242	80	Small exotherm with very high decomposition power.
8	5.01	293	388	570	Very high exotherm with medium decomposition power over a wide temperature range (293 - 445 °C).
16	4.27	247	278	50	Small exotherm with very high decomposition power.
16	4.27	308	398	690	Very high exotherm with medium decomposition power over a wide temperature range (259 - > 450 °C).

The results of the TMR calculation with dyn. DSC of different heating rates with AKTS are reported in the following:

Temperature	TMR (Time to Max Rate) h	DeltaH (reaction enthalpy)	Detlat T (ad, theor) (Adiab.temp.rise)	E(act) (activation energy)	Remark
°C	h	J/g	°C	KJ/mol
160	8	1110	700	158	The TMRad and the information about the released energy and the with it connected temperature rise, refer to the combination of both exotherms. The high activation energy indicates an autocatalytic decomposition mechanism.
150	24	1110	700	158	The TMRad and the information about the released energy and the with it connected temperature rise, refer to the combination of both exotherms. The high activation energy indicates an autocatalytic decomposition mechanism.
132	165	1110	700	158	The TMRad and the information about the released energy and the with it connected temperature rise, refer to the combination of both exotherms. The high activation energy indicates an autocatalytic decomposition mechanism.

The performed simulation with AKTS determined the Self accelerating decomposition temperature (SADT) to be 116 °C (pre-exotherm).

Applicant's summary and conclusion

Conclusions:

In the DSC-measurements the test item Vinyl propionate (CAS 105-38-4) showed exothermic effects in the temperature range of 189 – 308 °C. In addition, the simulation performed with AKTS determined the Self accelerating decomposition temperature (SADT) of the test item to be 116 °C (pre-exotherm).

Executive summary:

In the DSC-measurements the test item Vinyl propionate (CAS 105-38-4) showed exothermic effects in the temperature range of 189 – 308 °C. In addition, the simulation performed with AKTS determined the Self accelerating decomposition temperature (SADT) of the test item to be 116 °C (pre-exotherm).