Registration Dossier
Registration Dossier
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EC number: 265-051-5 | CAS number: 64741-50-0 A complex combination of hydrocarbons produced by vacuum distillation of the residuum from atmospheric distillation of crude oil. It consists of hydrocarbons having carbon numbers predominantly in the range of C15 through C30 and produces a finished oil with a viscosity of less than 100 SUS at 100°F (19cSt at 40°C). It contains a relatively large proportion of saturated aliphatic hydrocarbons normally present in this distillation range of crude oil.
Other distribution data
Administrative data
- Endpoint:
- other distribution data
- Adequacy of study:
- other information
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The predicted endpoint was determined using a validated computer model.
Data source
Referenceopen allclose all
- Reference Type:
- review article or handbook
- Title:
- Unnamed
- Year:
- 2 001
- Reference Type:
- secondary source
- Title:
- Unnamed
- Year:
- 1 999
Materials and methods
- Principles of method if other than guideline:
- Method: other: Calculations by EQC V2.11
Air : % (Fugacity Model Level I)
Water : % (Fugacity Model Level I)
Soil : % (Fugacity Model Level I)
Biota : % (Fugacity Model Level II/III)
Soil : % (Fugacity Model Level II/III) - Type of study:
- other:
- Media:
- other: Soil, air, water, suspended sediment and sediment for C15 hydrocarbon structures
Results and discussion
Any other information on results incl. tables
Year: 1999 (unclear if "Year of test guideline" or "Year of study completion".)
Model based on chemical fugacity. Multimedia distribution was calculated for C15, C20 and C50 hydrocarbons. Some low molecular weight hydrocarbons will partition to air, while larger molecular weight components are expected to exhibit greater partitioning behaviour to terrestrial media. Mobility in the aquatic and atmospheric environment is low due to low water solubility and low vapour pressure. These components will partition rapidly to the terrestrial compartment, where the main fate process is expected to be moderate to slow biodegradation of base oil components in soil and sediment. A summary of the EQC modelling of the distribution and transport between environmental compartments for selected hydrocarbon compounds in lubricant base oils is presented in the attached table and graph. The compounds selected for modeling represent various C15, C20 and C50 compounds in base oils (e.g., linear and branched paraffins, naphthenes and aromatic hydrocarbons).
The default model input properties used in EQC are as follows:
Volumes (m3) |
Densities (kg/m3) |
Organic Carbon Lipid (g/g) |
|
Air |
1x104 |
1.185 |
|
Water |
2x1011 |
1000 |
|
Soil |
8.9x109 |
2400 |
0.02 |
Sediment |
1x108 |
2400 |
0.04 |
Susp. Sed. |
1x106 |
1500 |
0.2 |
Fish |
2x105 |
1000 |
0.05 |
Aerosol |
2x103 |
2000 |
Applicant's summary and conclusion
- Conclusions:
- This complex petroleum mixture is expected to partition primarily to soil and/or sediment.
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