Oleic acid, compound with 2-amino-2-methylpropan-1-ol (1:1)

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental starting date: 15 January 2018 Experimental completion date: 12 February 2018

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

GLP compliance:

yes

Type of method:

effusion method: vapour pressure balance

Test material

Test material information

Constituent 1

Reference substance name:

Oleic acid, compound with 2-amino-2-methylpropan-1-ol (1:1)

EC Number:

268-793-8

EC Name:

Oleic acid, compound with 2-amino-2-methylpropan-1-ol (1:1)

Cas Number:

68140-41-0

Molecular formula:

C18H34O2.C4H11NO

IUPAC Name:

oleic acid, compound with 2-amino-2-methylpropan-1-ol (1:1)

Test material form:

liquid - solid: mixture of

Specific details on test material used for the study:

Information as provided by the Sponsor.
Identification: Oleic AMP
Appearance/Physical state: Yellow paste
Batch: LAB4436
Purity: 100%
Expiry date: 21 February 2018
Storage conditions: Room temperature, in the dark

Results and discussion

Vapour pressure

Key result

Temp.:

25 °C

Vapour pressure:

0.034 Pa

Any other information on results incl. tables

Results

Recorded temperatures, mass differences and the resulting calculated values of vapor pressure are shown in the following table (as an example) - Please see the attachment section of this report for Figures 2 to 11 Graphs of Log₁₀Vapor Pressure vs Reciprocal Temperature and Runs 2 to 10)

Run 1

Table 1 – Vapor Pressure Data

Temperature (ºC)	Temperature (K)	Reciprocal Temperature (K^-1)	Mass Difference (µg)	Mass Difference (kg)	Vapor Pressure (Pa)	Log10Vp
25	298.15	0.0033540	29.15	2.915E-08	0.0404677	-1.392892
26	299.15	0.0033428	25.86	2.586E-08	0.0359003	-1.444902
27	300.15	0.0033317	28.16	2.816E-08	0.0390933	-1.407898
28	301.15	0.0033206	30.75	3.075E-08	0.0426889	-1.369685
29	302.15	0.0033096	33.65	3.365E-08	0.0467148	-1.330545
30	303.15	0.0032987	34.35	3.435E-08	0.0476866	-1.321604
31	304.15	0.0032879	36.24	3.624E-08	0.0503104	-1.298342
32	305.15	0.0032771	40.74	4.074E-08	0.0565576	-1.247509
33	306.15	0.0032664	41.83	4.183E-08	0.0580708	-1.236043
34	307.15	0.0032557	48.02	4.802E-08	0.0666641	-1.176108
35	308.15	0.0032452	44.43	4.443E-08	0.0616802	-1.209854

A plot of Log₁₀(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 6 gives the following statistical data using an unweighted least squares treatment.

Slope:	-2.32 x 10^3
Standard error in slope:	224
Intercept:	6.35
Standard error in intercept:	0.739

The results obtained indicate the following vapor pressure relationship:

Log₁₀(Vp (Pa)) = -2.32 x 10³/temp(K) + 6.35

The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of -1.44.

SUMMARY of Results

The values of vapor pressure at 25 °C extrapolated from each graph are summarized in the following table:

Table 5            Summary of Vapor Pressure Data

Run	Log10[Vp(25 ºC)]
1	-1.44
2	-1.40
3	-1.43
4	-1.47
5	-1.46
6	-1.45
7	-1.49
8	-1.49
9	-1.53
10	-1.51
Mean	-1.47
Vapor Pressure	3.42 x 10^-2Pa

The test item did not change in appearance under the conditions used in the determination.

Applicant's summary and conclusion

Conclusions:

The vapor pressure of the test item has been determined to be 0.0342 Pa at 25 ºC.

Executive summary:

The determination was carried out using a procedure designed to be compatible with Method A.4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.

Conclusion

The vapor pressure of the test item has been determined to be 0.0342P a at 25 ºC.

NOTE: Any of data in this dataset are disseminated by the European Union on a right-to-know basis and this is not a publication in the same sense as a book or an article in a journal. The right of ownership in any part of this information is reserved by the data owner(s). The use of this information for any other, e.g. commercial purpose is strictly reserved to the data owners and those persons or legal entities having paid the respective access fee for the intended purpose.