Registration Dossier
Registration Dossier
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EC number: 232-313-5 | CAS number: 8002-53-7 Wax obtained by extraction of lignite.
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study according to OECD test guideline 104 under GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
Test material
- Reference substance name:
- Montan wax
- EC Number:
- 232-313-5
- EC Name:
- Montan wax
- Cas Number:
- 8002-53-7
- Molecular formula:
- As montan wax is a UVCB, a molecular formular cannot be specified.
- IUPAC Name:
- Montan wax
Constituent 1
Results and discussion
Vapour pressure
- Temp.:
- 25 °C
- Vapour pressure:
- < 0.002 Pa
- Remarks on result:
- other: Vapour pressure of test substance constituent with the lowest boiling point
Transition / decomposition
- Transition / decomposition:
- yes
- Remarks:
- melting
- Transition temp.:
- 97.4 °C
Any other information on results incl. tables
Vapour pressure was determined by the effusion method (weight loss). Up to a temperature of 111.5°C minimal weight loss was observed. At 97.4°C the test substance melted. Increasing the temperature to 111.5°C led to an implosion of the test substance in all four cells of the apparatus used.
The weight loss observed is considered to be due to vaporisation of the test substance constutuent with the lowest boiling point.
From this weight loss an upper limit for the vapour pressure of the test substance was derived.
Applicant's summary and conclusion
- Conclusions:
- Based on a study according to OECD Test Guideline 104 under GLP, it is concluded that the test substance has a vapour pressure below 0.00174 Pa at 25°C.
- Executive summary:
In a study according to OECD Test Guideline 104 (effusion method: weight loss) under GLP,
up to a temperature of 111.5°C minimal weight loss was observed. At 97.4°C the test substance melted. Increasing the temperature to 111.5°C led to an implosion of the test substance in all four cells of the apparatus used and therefore the experiments could not be continued.
The weight loss observed is considered to be due to vaporisation of the test substance constituent with the lowest boiling point.
From this weight loss an upper limit for the vapour pressure of the test substance was determined as 0.00174 Pa at 25°C.
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