Phenol, paraalkylation products with C10-15 branched olefins (C12 rich) derived from propene oligomerization, carbonates, calcium salts, overbased, sulfurized, including distillates (petroleum), hydrotreated, solvent-refined, solvent-dewaxed, or catalytic dewaxed, light or heavy paraffinic C15-C50

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

March 23, 2021

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Justification for type of information:

Alternative method most appropriate for this substance.

Principles of method if other than guideline:

OECD Guideline 104 (OECD Guidelines for the Testing of Chemicals) states vapor pressure may be calculated if the vapor pressure is expected to be less than 10 Pa. A different calculation method than the one detailed in Guideline 104’s Appendix, however, was deemed more appropriate for this sample type.
GLS Test Code 15118, Thermogravimetric analysis differential thermal analysis (TGA-DTA) Vapor Pressure, was used to determine the vapor pressure at 20 ºC of test material EC 701-251-5.

GLP compliance:

no

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Type of method:

other: Thermogravimetric analysis differential thermal analysis

Key result

Test no.:

#1

Temp.:

20 °C

Vapour pressure:

ca. 0.032 Pa

Remarks on result:

not measured/tested

Conclusions:

The vapor pressure of the substance EC 701-251-5 was evaluated using a modified method most appropriate for the large molecular weight, highly viscous, substance that has a very low vapor pressure that cannot be measured by traditional means.
The vapor pressure in this study was 0.0315 Pa @20C

Executive summary:

The vapor pressure of the substance EC 701-251-5 was evaluated using a modified method most appropriate for the large molecular weight, highly viscous, substance that has a very low vapor pressure that cannot be measured by traditional means.

The vapor pressure in this study was 0.0315 Pa @20C

Description of key information

The vapor pressure was evaluated using a modified method most appropriate for the large molecular weight, highly viscous, substance that has a very low vapor pressure that cannot be measured by traditional means.

The vapor pressure in this study was estimated as 0.0315 Pa @20 °C.

Key value for chemical safety assessment

Vapour pressure:

0.032 Pa

at the temperature of:

20 °C

Additional information

Vapor pressure was determined using an alternative method most appropriate for this type of material. The estimated value is 0,0315 Pa at 20 °C. In addition, a supporting study (Cheng, 2014) looked at the headspace vapor of EC 701 -251 -5 after the material was kept at 70 °C for 3 days. Neither the alkyl phenate sulfide substance or impurity (TPP; EC 310 -154 -3) was detected, further demonstrating that the vapor pressure is very low and inhalation exposure is expected to be low.