Reaction mass of 4-methyl-1-oxaspiro[5.5]undec-3-ene and 4-methyl-1-oxaspiro[5.5]undec-4-ene and 4-methylidene-1-oxaspiro[5.5]undecane

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

4/11/2000

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Information is derived from a reliable non-GLP in-house study using the transpiration method equivalent to OECD TG 104, gas saturation method.

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

GLP compliance:

no

Type of method:

dynamic method

Key result

Temp.:

21.5 °C

Vapour pressure:

24 Pa

Conclusions:

The vapour pressure of Oxaspirane-819 was investigated using the Transpiration method equivalent to OECD TG 104, gas saturation method, in a reliable non-GLP study. This is a dynamic method and has recently been updated for use of low volatile substances. A precisely known volume of air is sampled through a trap containing the sorbent Tenax TA. The adsorbed compound is desorbed and eluted onto a GC column where it is identified and quantified using a calibration curve. The mass of analyte per unit volume collected is used to calculate the vapour pressure. The vapour pressure of the Oxaspirane-819 was found to be 21.5 Pa at 24°C.

Executive summary:

The vapour pressure of Oxaspirane-819 was investigated using the Transpiration method equivalent to OECD TG 104, gas saturation method. The vapour pressure of the substance was found to be 21.5Pa at 24°C.

Description of key information

The vapour pressure of Oxaspirane-819 was investigated using the Transpiration method equivalent to OECD TG 104, gas saturation method. The vapour pressure of the substance was found to be 21.5Pa at 24°C.

Key value for chemical safety assessment

Vapour pressure:

21.5 Pa

at the temperature of:

24 °C