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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:
May 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
method according to Siwoloboff
Specific details on test material used for the study:
Composition: Cyclohexyamine Benzoate - 99.7%, CAS #3129-92-8
Physical Description: Off-white crystalline powder
pH: ~7 (5% aq solution)
Stability: Test substance was expected to be stable for the duration of testing.
Expiration Date: Not applicable
Boiling pt.:
>= 230 - <= 230.5 °C
Atm. press.:
1 atm
Decomposition:
yes
Decomp. temp.:
>= 217 - <= 217.2 °C
Key result
Boiling pt.:
>= 230.2 - <= 230.7 °C
Atm. press.:
1 atm
Decomposition:
no

DETERMINATION OF BOILING POINT

Replicate #

Boiling Ranges Observed (°C)

Boiling Point Observed (°C)

 

Initial*

Final

Mean ± SD

1

230.0

230.2

230.5 ± 0.4

2

230.5

230.7

* Test substance decomposed at approximately 217.0-217.2oC before reaching boiling point. Decomposition
observed signaled by color change from colorless to brown color.

Conclusions:
The boiling point of cyclohexylamine benzoate was found to be 230.5 ± 0.4 °C
Executive summary:

The boiling point of the test substance was measured by the capillary technique using the Stuart SMP 20 Melting Point Apparatus based on the procedures described in OPPTS 830.7220, OECD

TG 103, and EEC method A2. The temperature (°C) at which the initiation of rapid bubble evolution was observed, was recorded as the boiling point. Heating of the test substance was

continued until decomposition of the test substance or a drop in the boiling temperature was observed. This procedure was conducted with water to verify the method, and repeated with the

test substance to obtain two measurements.

The boiling point of cyclohexylamine benzoate was found to be 230.5 ± 0.4 °C

Description of key information

The boiling point of the test substance was measured by the capillary technique using the Stuart SMP 20 Melting Point Apparatus based on the procedures described in OPPTS 830.7220, OECD

TG 103, and EEC method A2. The temperature (°C) at which the initiation of rapid bubble evolution was observed, was recorded as the boiling point. Heating of the test substance was

continued until decomposition of the test substance or a drop in the boiling temperature was observed. This procedure was conducted with water to verify the method, and repeated with the

test substance to obtain two measurements.

The boiling point of cyclohexylamine benzoate was found to be 230.5 ± 0.4 °C

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
230.5 °C

Additional information