Registration Dossier
Registration Dossier
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EC number: 284-895-5 | CAS number: 84989-06-0 The fraction of tar acids, rich in 2,4- and 2,5-dimethylphenol, recovered by distillation of low-temperature coal tar crude tar acids.
Vapour pressure
Administrative data
Link to relevant study record(s)
- 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
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- other: NF T 20-048 AFNOR Sept.85
- GLP compliance:
- no
- Type of method:
- static method
- Temp.:
- 20 °C
- Vapour pressure:
- 133.1 Pa
- Remarks on result:
- other: estimated from vapour pressure curve
- Endpoint:
- vapour pressure
- Type of information:
- other: estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Calculation based on the literature values for the substances present in the mixture
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Calculation method
- GLP compliance:
- no
- Temp.:
- 25 °C
- Vapour pressure:
- 12 Pa
Referenceopen allclose all
Original data:
2.67 kPa at 80 °C
5.60 kPa at 90 °C
11.7 kPa at 110 °C
17.6 kPa at 125 °C
Linear equation: log p = -2326.1*(1/T)+10.059
Accuracy: <10%
Nature of the change during measuring: none
Nature of the change for estimate: none
Temperature of transition: -
An estimate of the vapour pressure:
133.1 Pa at 209 °C
180.8 Pa at 25 °C
243.1 Pa at 30 °C
725.5 Pa at 50 °C
Description of key information
133.1 Pa at 20 °C
(estimated from measured vapour pressure curve according to OECD 104)
Key value for chemical safety assessment
- Vapour pressure:
- 133.1 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure value for Tar acids, xylenol fraction will vary depending on the ratio of constituents present in the substance. A value of 133.1 Pa at 20 °C was experimentally determined according OECD 104. In a supporting study the vapour pressure of another material was calculated based on literature values for the substances present in the sample to be 12 Pa at 25 °C.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
