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Boiling point

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Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Only short summary available.
Principles of method if other than guideline:
Data taken from Safety data sheet.
GLP compliance:
not specified
Boiling pt.:
ca. 110 °C

Atmospheric pressure was not reported.

Endpoint:
boiling point
Type of information:
other: read-across based on grouping of substances (category approach)
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Reason / purpose for cross-reference:
reference to same study
Principles of method if other than guideline:
Determination of fugacity coefficients by vapour pressure osmometer.
Calculation of boiling curves from fugacity coefficients.
GLP compliance:
no
Boiling pt.:
100 - 105 °C
Atm. press.:
1 Bar
Remarks on result:
other: 11 - 44% dry mass, read from the calculated boiling curve
Boiling pt.:
105 - 110 °C
Atm. press.:
1 Bar
Remarks on result:
other: 55 - 68% dry mass, read from the calculated boiling curve
Boiling pt.:
110 - 115 °C
Atm. press.:
1 Bar
Remarks on result:
other: 80% dry mass, read from the calculated boiling curve

Regression curves:

Vapour pressure [bar] as a function of concentration [% dry mass]:

30 °C:

y = -1E-06 x² - 7E-05 x + 0.0424

R² = 0.9995

50 °C:

y = -4E-06 x² - 0.0002 x + 0.123

R² = 0.9964

The fugacity coefficient of Vinasses for the different concentrations were calculated by relating the measured vapour pressures to the vapour pressure of pure water. Provided that fugacity coefficients are constant for the whole temperature range the following vapour pressures were calculated:

Temperatur [°C]

vapour pressure [bar] for different concentrations dry matter

 0%

11%

22%

33%

44%

55%

68%

80%

25

0,032

0,031

0,030

0,029

0,028

0,026

0,024

0,021

30

0,042

0,041

0,040

0,039

0,037

0,035

0,032

0,028

35

0,056

0,055

0,054

0,051

0,049

0,046

0,042

0,037

40

0,074

0,072

0,070

0,067

0,064

0,060

0,055

0,049

45

0,096

0,093

0,091

0,087

0,083

0,078

0,071

0,063

50

0,123

0,120

0,117

0,113

0,107

0,101

0,092

0,081

55

0,157

0,153

0,150

0,144

0,137

0,128

0,117

0,104

60

0,199

0,194

0,190

0,182

0,173

0,162

0,148

0,132

65

0,250

0,243

0,238

0,228

0,217

0,204

0,186

0,165

70

0,312

0,303

0,297

0,284

0,271

0,254

0,232

0,206

75

0,386

0,375

0,367

0,352

0,335

0,314

0,287

0,255

80

0,474

0,461

0,451

0,432

0,412

0,386

0,352

0,313

85

0,578

0,562

0,550

0,527

0,502

0,471

0,430

0,382

90

0,701

0,682

0,668

0,640

0,609

0,572

0,521

0,463

95

0,845

0,822

0,805

0,771

0,735

0,689

0,628

0,558

100

1,013

0,986

0,965

0,925

0,881

0,826

0,753

0,669

105

1,208

1,175

1,151

1,102

1,050

0,985

0,898

0,798

110

1,433

1,393

1,365

1,307

1,245

1,168

1,065

0,946

115

1,691

1,644

1,610

1,543

1,469

1,378

1,257

1,116

120

1,985

1,931

1,891

1,812

1,725

1,619

1,476

1,311

Endpoint:
boiling point
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:

Description of key information

not applicable

Key value for chemical safety assessment

Additional information

The constituents of the dry mass of Vinasses, many in number, will not have a common boiling point, but rather decompose. The initial boiling temperatures of Vinasses, consisting of water and dry mass, solely reflect the water partial pressure.