Reaction mass of 2-(((1-(methacryloyloxy)propan-2-yl)oxy)carbonyl)benzoic acid and 2-((2-(methacryloyloxy)propoxy)carbonyl)benzoic acid

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Deviations:

no

GLP compliance:

no

Remarks:

The study described in this report was conducted in a facility which operates in accordance with Good Laboratory Practice principles; however, no claim of GLP compliance was intended nor is made for this study.

Type of method:

differential scanning calorimetry

Specific details on test material used for the study:

Identification: Methacryloxyisopropyl acid phthalate
Appearance/Physical state: clear yellow liquid
Batch: YY00GCV000
Purity: 62.8%
Expiry date: 31 December 2017
Storage conditions: room temperature in the dark

Key result

Boiling pt.:

96 °C

Atm. press.:

>= 99.6 - <= 100.2 kPa

Remarks on result:

other: partially boil

Key result

Boiling pt.:

190 °C

Atm. press.:

>= 99.6 - <= 100.2 kPa

Remarks on result:

other: further boiling

Key result

Atm. press.:

>= 99.6 - <= 100.2 kPa

Decomposition:

yes

Decomp. temp.:

348 °C

The thermographic data for Determinations 1, 2, 3 and 4 are shown below:

Thermographic Data

Thermal Event	Interpretation	Temperature (°C)
		Determination 1	Determination 2	Determination 3	Determination 4
endotherm	Partial boil	95.93	102.75	96.25	98.68
endotherm	Partial boil	202.23	190.16	-	195.90
endotherm	decomposition	347.74	351.65	-	-

- No Data

Atmospheric pressure :

99.6 kPa (determinations 1 & 2)

100.2 kPa (determinations 3 & 4)

After heating, the samples had lost approximately 92%, 89%, 20% and 41% of their original weight for Determinations 1, 2, 3 and 4 respectively.

Result: partial boil from approximately 96 °C (369 K) followed by further boiling from approximately 190 °C (463 K) and decomposition from approximately 348 °C (621 K)

Discussion:

Determinations 1 and 2 showed three separate thermal events; therefore, additional determinations were performed to investigate. The first endotherm resulted in the loss of ~20 % of the test item mass and left a liquid residue (determination 3). The first and second endotherms combined resulted in the loss of ~40% of the test item and left a white solid residue. These two endotherms were therefore assigned to partial boiling of the test item. Heating past the temperature for the third endotherm left an orange solid residue and was attributed to the decomposition of the remaining test item.

All the endotherms have been reported as approximately starting from the lowest onset observed for each endotherm.

Conclusions:

The test item has been determined to partially boil from approximately 96 °C (369 K) followed by further boiling from approximately 190 °C (463 K) and decomposition from approximately 348 °C (621 K).

Executive summary:

Boiling Point. Partially boiled from approximately 96 °C (369 K) followed by further boiling from approximately 190 °C (463 K) and decomposition from approximately 348 °C (621 K) at 99.6 to 100.2 kPa by differential scanning calorimetry, designed to be compatible with Method A.2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Description of key information

Boiling Point. Partially boiled from approximately 96 °C (369 K) followed by further boiling from approximately 190 °C (463 K) and decomposition from approximately 348 °C (621 K) at 99.6 to 100.2 kPa by differential scanning calorimetry, designed to be compatible with Method A.2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

96 °C