Registration Dossier
Registration Dossier
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EC number: 292-636-2 | CAS number: 90641-12-6 The residue remaining from the distillation of recovered naphtha. Composed primarily of naphthalene and condensation products of indene and styrene.
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2008
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: guidance followed, no GLP
Data source
Referenceopen allclose all
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- static method
Test material
- Reference substance name:
- Naphtha (coal), distn. residues
- EC Number:
- 292-636-2
- EC Name:
- Naphtha (coal), distn. residues
- Cas Number:
- 90641-12-6
- Molecular formula:
- Not applicable for UVCB substances
- IUPAC Name:
- 1,2,3,4-tetrahydronaphthalene; 1,2-dihydroacenaphthylene; 1-methylnaphthalene; 2-methylnaphthalene; naphthalene
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Temp.:
- ca. 79 °C
- Vapour pressure:
- ca. 1.16 kPa
- Remarks on result:
- other: measured value (first sample)
- Temp.:
- ca. 85 °C
- Vapour pressure:
- ca. 1.6 kPa
- Remarks on result:
- other: measured value (second sample)
- Temp.:
- ca. 20 °C
- Vapour pressure:
- ca. 61.5 Pa
- Remarks on result:
- other: estimated value
- Temp.:
- ca. 20 °C
- Vapour pressure:
- ca. 63.5 Pa
- Remarks on result:
- other: estimated value
Transition / decomposition
- Transition / decomposition:
- yes
- Transition temp.:
- ca. 30 °C
Any other information on results incl. tables
first sample (nehyzb):
Linear equation: log p = -2229.7*(1/T)+9.3948
Scope: from 72 to 235 °C
Accuracy: <10%
Nature of the change during measuring: none
Nature of the change for estimate: transition liquid-solid
Temperature of transition: <70°C
second sample (hyzb):
Linear equation: log p = -2292.6*(1/T)+9.6232
Scope: from 80 to 223 °C
Accuracy: <10%
Nature of the change during measuring: none
Nature of the change for estimate: transition liquid-solid
Temperature of transition: <50°C
Applicant's summary and conclusion
- Conclusions:
- The estimate values for 20°C do not take into account that there is a liquid-solid transition at cca 30°C. Real vapour pressure values for 20°C should be ten times lower. However these estimated values could be taken as worst case.
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