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Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
02 June 2016 - 16 June 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
1995
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Version / remarks:
Regulation EC No. 440/2008
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Version / remarks:
1996
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
302.9 °C
Atm. press.:
1 013 hPa
Decomposition:
yes
Remarks:
Decomposition energy of -270 J/g
Decomp. temp.:
> 380 - < 470 °C

During the heating phase a distinct endothermic effect was observed in the temperature range of 120 – 320 °C, which can be assigned to the boiling of the test item.

For the correction of the boiling temperature to standard pressure the test item was assigned to chemical group 2 (e.g. hydrocarbons). A correction value f = 5.15 was thus used for the temperature of 300 °C.

The lowest measured onset temperature is corrected to the standard pressure to be 302.53 °C and the highest onset temperature to be 303.35 °C. As the corrected onset temperatures in both tests deviate by less than 0.5 K from their mean value of 302.94 °C, the test item has a boilingpoint of 302.9 °C.

No further thermal effects were observed up to the test end temperature of 500 °C.

No.

Sample weight / mg

Onset of Effect / °C

Range of effect / °C

Weight loss / mg

Atmospheric pressure / hPa

Remark

PN11224

14.49

3.65
303.09

-10 – 20 (endo)
120 – 320 (endo)

14.49

1007.9

Figure 1

PN11234

16.70

2.59
302.18

0 – 20 (endo)
120 – 320 (endo)

16.58

1005.9

Figure 2

Conclusions:
The test item reaction mass of N-butylphthalimide and N-sec-butylphthalimide and N-propylphthalimide has a boiling point of 302.9 °C at atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2. and OECD Test Guideline 103 (1995).
Executive summary:

The test item reaction mass of N-butylphthalimide and N-sec-butylphthalimide and N-propylphthalimide has a boiling point of 302.9 °C at atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2. and OECD Test Guideline 103 (1995).

Description of key information

The test item has a boiling point of 302.9 °C at atmospheric pressure (1013hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2. and OECD Test Guideline 103 (1995).

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
302.9 °C

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