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Physical & Chemical properties

Boiling point

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Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2007-06-11 to 2007-06-26
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
1995
GLP compliance:
yes (incl. QA statement)
Remarks:
Food and Consumer Product Safety Authority (WMA), Den Haag, The Netherlands / National GLP Compliance Monitoring Authority, New Delhi, India
Type of method:
photocell detection
Key result
Atm. press.:
90.87 kPa
Decomposition:
yes
Decomp. temp.:
>= 155 - <= 270 °C

The boiling point of the test item was not achieved as the test item underwent decomposition by changing its colour from pale yellow to black. The test item started to degrade at temperatures greater than 155 °C and appeared to be completely degraded by 270 °C. During the experimental period, the barometric pressure was 90.87 kPa. Summarized results of boiling point of test item are given in the following table.

 

Temperature
[°C]

visual observation with respect to change in colour

140-145

Clear liquid

145-150

Clear liquid

150-155

Clear liquid

155-160

Pale yellow

160-165

Pale yellow

165-170

Pale yellow

170-175

Pale yellow

175-180

Pale yellow

180-185

Pale yellow

185-190

Pale yellow

190-195

Pale yellow

195-200

Pale yellow

200-205

Pale yellow

205-210

Pale yellow

210-215

Dark yellow

215-220

Dark yellow

220-225

Dark yellow

225-230

Reddish yellow

230-235

Reddish yellow

235-240

Reddish

240-245

Pale brown

245-250

Pale brown

250-255

Pale brown

255-260

Pale brown

260-265

Dark brown

265-270

Black

270-275

Black

Conclusions:
No boiling point could be measured for the substance, as it decomposes before boiling between 155 and 270 °C at 90.87 hPa (OECD Guideline 13, photocell detection)
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2007-06-15 to 2007-07-20
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
1995
GLP compliance:
yes (incl. QA statement)
Remarks:
Bundesinstitut für Risikobewertung, Berlin, Germany / Food and Consumer Product Safety Authority, Den Haag, The Netherlands / National GLP Compliance Monitoring Authority, New Delhi, India
Type of method:
photocell detection
Key result
Atm. press.:
90.84 kPa
Decomposition:
yes
Decomp. temp.:
> 155 - <= 270 °C

The boiling point of the test item was not achieved as the test item underwent decomposition by changing its color from clear liquid to black. The test item started to degrade at temperatures greater than 155 °C and appeared to be completely degraded by 270 °C. During the experimental period the barometric pressure was 90.84 kPa. The summarised results of boiling point of test item given in the following table.

 

Temperature

Visual observation with respect to change in color

135-140

Clear liquid

140-145

Clear liquid

145-150

Clear liquid

150-155

Clear liquid

155-160

Pale yellow

160-165

Pale yellow

165-170

Pale yellow

170-175

Pale yellow

175-180

Yellowish

180-185

Yellowish

185-190

Yellowish

190-195

Yellowish

195-200

Yellowish

200-205

Yellowish

205-210

Yellowish

210-215

Yellowish

215-220

Reddish orange

220-225

Reddish orange

225-230

Reddish

230-235

Reddish

235-240

Reddish

240-245

Reddish

245-250

Reddish black

250-255

Reddish black

255-260

Black

260-265

Black

265-270

Completely black

Conclusions:
No boiling point could be measured for the substance, as it decomposes before boiling between 155 and 270 °C at 90.84 hPa (OECD Guideline 13, photocell detection)

Description of key information

not applicable

Key value for chemical safety assessment

Additional information

The same results were obtained in two studies performed according to OECD Guideline 103 (photocell detection method) on batches with different purities.

The substance degrades before boiling, starting at 155 °C and appeared to be completely degraded by 270 °C.