Registration Dossier
Registration Dossier
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EC number: 230-989-6 | CAS number: 7394-38-9
Boiling point
Administrative data
Link to relevant study record(s)
- 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
- 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.
Reference
The checking of apparatus with ultrapure water
01 December 2017 |
|
Atmospheric pressure, kPa |
Boiling point, °C |
99.45 |
100.3 |
99.49 |
100.2 |
99.45 |
100.3 |
Mean: |
100.3 |
Preliminary test
Start temperature, |
Heating rate |
Atmospheric pressure, kPa |
Boiling point, °C |
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 |
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 |
- |
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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