Vinasses, residue of fermentation containing biomass of Corynebacterium glutamicum

Boiling point

Link to relevant study record(s)

Reference

Reference 1

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:

other:

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

Reference 2

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 Material Safety Data Sheet.

GLP compliance:

not specified

Boiling pt.:

> 100 °C

Remarks on result:

other: Initial boiling point

Atmospheric pressure was not reported.

Reference 3

Endpoint:

boiling point

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Description of key information

not applicable

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.