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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:
16 August 2016 - 10 October 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:
July 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Version / remarks:
May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Version / remarks:
August 1996
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
method according to Siwoloboff
Remarks:
with automatic photo-electrical detection
Key result
Atm. press.:
99.47 kPa
Decomposition:
yes
Decomp. temp.:
> 109 °C

Using a linear heating rate in a preliminary test, no boiling point was observed from 80 °C up to 375 °C at a rate of 5 °C/min. In the main test, from 109 °C the test item moved towards the upper part of the capillary, it became hardened, its color brightened. The changes were irreversible. Thus, this temperature is considered to be the decomposition temperature.

A supplementary test was performed from 100 to 120 °C after 5 minutes thermostated equilibration of the test item in the melting point apparatus.

Table 1. Results of the supplementary study

Temperature, °C

(Atmospheric pressure:

99.47 kPa)

Observation

100

liquid, viscous, no change was observed

105

liquid, viscous, no change was observed

107

liquid, viscous, no change was observed

108

liquid, viscous, no change was observed

109

at the bottom of the tube (ca. 0.5 cm) the Test Item was hardened,  its color brightened, moved towards the upper part of the capillary, remained in liquid state above

110

at the bottom of the tube (ca. 1 cm) the Test Item was hardened, its color brightened, moved towards the upper part of the capillary, remained in liquid state above

111

most of the Test Item was hardened, its color brightened, moved towards the upper part of the capillary

120

all of the Test Item was hardened, its color brightened, moved towards the upper part of the capillary
Conclusions:
No boiling point was observed up to 375 °C. The test item decomposes above a temperature of 109 °C at atmospheric pressure.
Executive summary:

The determination of the boiling point of the test item was performed according to OECD TG 103, EU method A.2 and EPA OPPTS 830.7220. The boiling point is determined using a method following Siwoloboff with automatic photo-electrical detection. No boiling point was observed up to 375 °C using a linear heating rate (0.2 and 0.5 °C/min). The test item decomposes above a temperature of 109 °C at atmospheric pressure.

Description of key information

No boiling point was observed up to 375 °C. The test item decomposes above a temperature of 109 °C at atmospheric pressure.

Key value for chemical safety assessment

Temperature of decomposition (state purity):
109 °C

Additional information

The determination of the boiling point of the test item was performed according to OECD TG 103, EU method A.2 and EPA OPPTS 830.7220. The boiling point is determined using a method following Siwoloboff with automatic photo-electrical detection. No boiling point was observed up to 375 °C using a linear heating rate (0.2 and 0.5 °C/min). The test item decomposes above a temperature of 109 °C at atmospheric pressure.