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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:
01 - 12 December, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Version / remarks:
August 1996
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
adopted July 27, 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Version / remarks:
31 May 2008
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
method according to Siwoloboff
Key result
Boiling pt.:
>= 187.27 - <= 192.53 °C
Atm. press.:
99.5 kPa

The checking of apparatus with ultrapure water

01 December 2017

Atmospheric pressure, kPa
(at the measuring)

Boiling point, °C
(at standard atmospheric pressure)

99.45

100.3

99.49

100.2

99.45

100.3

Mean:

100.3

 

Preliminary test

Start temperature,
°C

Heating rate
°C/min

Atmospheric pressure, kPa
(at the measuring)

Boiling point, °C
(at standard atmospheric pressure)

111.2

5

99.50

195.2

 

Determination of the boiling point of p-Nitrobenzoic acid, compound with
2,2’,2”-nitrilotriethanol (1:1)

Atmospheric pressure, kPa
(at the measuring)

Boiling point, °C

Boiling point, K

99.50

190.1

463.25

99.50

188.8

461.95

99.50

190.9

464.05

Mean:

189.9

463.1

RSD (CV %):

1.06

-

Conf.int. (95 %):

2.63

-

Conclusions:
The boiling point of p-Nitrobenzoic acid, compound with 2,2’,2”-nitrilotriethanol (1:1) was determined to be 189.9 °C i.e. 463.1 K.
Executive summary:

A small amount of the test item was heated in the electronic controlled sample block and the temperature around the sample was displayed. A phase transformation from liquid to vapour is usually deduced by the formation of bubbles. The initial temperature of boiling or other effects observed was registered with the corresponding heating temperature.The principle of the method was based on Siwoloboff method. The rising bubbles were detected automatically by photocell detection.

The boiling point of p-Nitrobenzoic acid, compound with 2,2’,2”-nitrilotriethanol (1:1) was determined to be 463.1 K (189.9 °C) at atmospheric pressure.

 

 

Description of key information

The boiling point of p-Nitrobenzoic acid, compound with 2,2’,2”-nitrilotriethanol (1:1) was determined to be 463.1 K (189.9 °C) at atmospheric pressure in a GLP study based on the Siwoloboff method (Klimisch 1, Toxicoop, 2017).

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
189.9 °C

Additional information

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