Methacrylic anhydride

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

OECD 104, GLP.

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

[adopted on July 1995] and EU test method A.4 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the static method.

Deviations:

no

GLP compliance:

yes

Type of method:

static method

Key result

Temp.:

20 °C

Vapour pressure:

0.9 hPa

Remarks on result:

other: calculated by mathematical interpolation using Antoine equation, corrected due to the limit of determination the vapour pressure is < 1 hPa

]

Temperature °C	Inverse temperature x1000 K-1	Vapour pressure [hPa]
18.51	3.429	0.3
30.19	3.297	1.6
40.13	3.192	3.2
49.99	3.095	5.1
60.10	3.001	7.7
69.88	2.915	13.3
90.27	2.752	32.1
110.13	2.609	72.6
56.24	3.036	8.7
Calculated pressure:
20	3.411	0.9

Above 100 °C the sample became turbid, white flakes precipitated which did not disappear during

temperature decrease (see last measurement at 56.24 °C).

 

The vapour pressure of the test item at 20 °C was calculated by mathematical interpolation using the Antoine equation (the first data point of 0.3 hPa was neglected because it is too small and uncertain).

It was calculated to 0.9 hPa (at 20°C), but corrected due to the limit of determination to < 1 hPa.

Antoine equation	Log p = A-B/(T + C)	[p in hPa; T in °C]
A=8.389901	B=2616.9731	C=290.14466

Conclusions:

The vapour pressure of Methacrylic anhydride was determined according to OECD guideline 104 [adopted on July 1995] and EU test method A.4 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the static method.
The vapour pressure was < 1 hPa at 20°C

Executive summary:

The vapour pressure of Methacrylic anhydride was determined according to OECD guideline 104 [adopted on July 1995] and EU test method A.4 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the static method.

The vapour pressure was < 1 hPa at 20°C

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.

Description of key information

The vapour pressure of Methacrylic anhydride was determined according to OECD guideline 104 [adopted on July 1995]

and EU test method A.4 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the static method.
The vapour pressure was < 1 hPa at 20°C

Key value for chemical safety assessment

Vapour pressure:

0.9 hPa

at the temperature of:

20 °C

Additional information

Calculated by mathematical interpolation using Antoine equation, corrected due to the limit of determination the vapour pressure is < 1 hPa