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Diss Factsheets

Physical & Chemical properties

Boiling point

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Administrative data

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
03 October 2017 and 03 October 2017.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
GLP compliance:
yes (incl. QA statement)
Type of method:
other: capillary method
Specific details on test material used for the study:
Batch/Lot number: 2161004
Appearance: White to light yellow flakes
Purity: 99.41%
Expiry date: 31 January 2018
Storage conditions: Controlled room temperature (15-25°C, below 70RH%), protected from light
Safety precautions: Routine safety precautions (gloves, goggles, face mask, lab coat) for unknown materials were applied to assure personnel health and safety.
Key result
Boiling pt.:
221.4 °C
Atm. press.:
97.2 kPa

The test was carried out at 97.2 kPa atmospheric pressure. Using a linear heating rate of 0.5 °C/min, the boiling point of NIPAM was found to be 221.4 ± 0.06 °C (95 % confidence interval), i.e. 495.5 K.

Measured temperatures corresponding to the boiling point of NIPAM (three experiments (I, II, III) with two parallel samples each (1, 2)

 

Measured Temperatures during the Main Study (°C)

I/1

I/2

II/1

II/2

III/1

III/2

Mean

Boiling Point

221.3

221.3

221.3

221.4

221.4

221.4

221.4
Conclusions:
The boiling point of NIPAM is: 221.4 ± 0.06 °C.
Executive summary:

For the determination of the boiling point, the capillary method is used. A small amount of the test item is heated in the electronic controlled sample block and the temperature around the sample is displayed. The sample is observed visually while raising the temperature. A phase transformation from liquid to vapour usually is deduced by the formation of bubbles. The test item is assessed visually for any possible changes in its appearance, consistency and colour. The initial temperature of boiling or other effects observed is registered with the corresponding heating temperature.

The boiling point of NIPAM is: 221.4 ± 0.06 °C.

Description of key information

For the determination of the boiling point, the capillary method is used. A small amount of the test item is heated in the electronic controlled sample block and the temperature around the sample is displayed. The sample is observed visually while raising the temperature. A phase transformation from liquid to vapour usually is deduced by the formation of bubbles. The test item is assessed visually for any possible changes in its

appearance, consistency and colour. The initial temperature of boiling or other effects observed is registered with the corresponding heating temperature.

The boiling point of NIPAM is: 221.4 ± 0.06 °C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
221.4 °C

Additional information