Reaction mass of diethyl adipate and diethyl glutarate and diethyl succinate

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 23 June 2017 to 23 October 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

2006

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Version / remarks:

2009

Deviations:

no

GLP compliance:

no

Type of method:

static method

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: CY71353002
- Expiration date of the lot/batch: 01/06/2019
- Purity test date: 01/06/2017
- Purity of the test item: 99.8%

Test no.:

#1

Temp.:

61.2 °C

Vapour pressure:

1.12 mBar

Test no.:

#2

Temp.:

79.22 °C

Vapour pressure:

3.25 mBar

Test no.:

#3

Temp.:

93.59 °C

Vapour pressure:

7.03 mBar

Test no.:

#4

Temp.:

103 °C

Vapour pressure:

11.29 mBar

Test no.:

#5

Temp.:

114.54 °C

Vapour pressure:

19.57 mBar

Test no.:

#6

Temp.:

124.88 °C

Vapour pressure:

31.19 mBar

Test no.:

#7

Temp.:

135.73 °C

Vapour pressure:

49.64 mBar

Key result

Test no.:

#8

Temp.:

20 °C

Vapour pressure:

0.06 mBar

Key result

Test no.:

#9

Temp.:

25 °C

Vapour pressure:

0.09 mBar

The maximum error involved by the modelling of vapour pressure with the Antoine's law is lower than 10%.

Conclusions:

The test item vapour pressure at 20°C is 0.06 mBar and 0.09 mBar at 25°C.

Executive summary:

The test item vapour pressure was determined using the static method according to recognised guidelines. No deviation from the guidelines was observed during the study.

The extended Antoine's law was built by the regression of the logarithm of measured vapour pressure versus the inverse of the temperature. The vapour pressure at 20°C and 25°C was calculated using the extended Antoine's law. This law was suitable for extrapolation as the vapour pressures around 25°C and 20°C was too low to be measured with the apparatus used.

The test item vapour pressure at 20°C is 0.06 mBar and 0.09 mBar at 25°C.

Description of key information

The vapour pressure of the test item was determined in a key study of Klimisch validity one, performed according to recognised guideline and under GLP.

Key value for chemical safety assessment

Vapour pressure:

9 Pa

at the temperature of:

25 °C

Additional information

The test item is not considered volatile at 20°C and 25°C as the vapour pressures are lower than 10 Pa.