Phenol, 4-(phenylamino)-, sulfurized, leuco deriv.

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

November 01, 2011 - December 14, 2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

no

GLP compliance:

no

Type of method:

effusion method: vapour pressure balance

Key result

Remarks on result:

not determinable because of methodological limitations

Remarks:

From the general behaviour of the test item and the known composition of the test item it can be assumed that the vapour pressure of the test item before drying would be approximately like the vapour pressure of water.

Vapour Pressure (Effusion Method):

The vapour pressure was measured in the temperature range of -17 °C to 21 °C. Above -14 °C a vapour pressure could be measured. However the measured values showed at no point of the measurement a reasonable behaviour of the vapour pressure. This untypical behaviour of the vapour pressure was most likely caused by the high water content of the test item (80.5 %). It can be assumed that the measured values show a combination of the vapour pressure of water, the drying of the test item (thus evaporation of water and physical and chemicals changes to the test item) and the vapour pressure of a partially dried test item.

Furthermore the degassing of the test item before the measurement was waived, because this would only lead to the measurement of a (partially) dried test item. The measurement with the dynamic method was also not possible due to the consistency of the test item. Therefore it has to be concluded, that the measurement of the vapour pressure for this test item does not yield any reasonable results. From the general behaviour of the test item in other tests and the known composition of the test item it can be assumed that the vapour pressure of the test item before drying would be approximately like the vapour pressure of water. The vapour pressure of the (partially) dried test item should be considerably lower.

Conclusions:

The vapor pressure was not determinable.

Executive summary:

A study was conducted according to OECD TG 104 and Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item. The measurement of the vapour pressure did not yield any meaningful results due to the chemical composition (water content 80.5 %) of the test item. From the general behaviour of the test item and the known composition of the test item it can be assumed that the vapour pressure of the test item before drying would be approximately like the vapour pressure of water. The vapour pressure of the (partially) dried test item should be considerably lower.

Description of key information

The vapor pressure was not determinable.

Additional information

A study was conducted according to OECD TG 104 and Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item. The measurement of the vapour pressure did not yield any meaningful results due to the chemical composition (water content 80.5 %) of the test item. From the general behaviour of the test item and the known composition of the test item it can be assumed that the vapour pressure of the test item before drying would be approximately like the vapour pressure of water. The vapour pressure of the (partially) dried test item should be considerably lower.