Registration Dossier
Registration Dossier
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EC number: 265-054-1 | CAS number: 64741-53-3 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 C20 through C50 and produces a finished oil with a viscosity of at least 100 SUS at 100°F (19cSt at 40°C). It contains relatively few normal paraffins.
Viscosity
Administrative data
Link to relevant study record(s)
Description of key information
>2 mm²/s at 40°C
2.5 to 50 mm²/s at 100°C
Key value for chemical safety assessment
Additional information
The viscosity for unrefined/acid treated oils ranges from 2.5 to 50 mm2/s at 100ºC and is >2 mm2/s at 40ºC. Viscosity was determined using the EN ISO 3104/ASTM D 445 test methods (CONCAWE, 2010a).
Supporting studies have reported viscosities of >22 mm2/s at 28ºC (Sequeira, 1994) and 11.34 to 51.1 mm²/s at 28ºC (CONCAWE, 1994). Read across data from other lubricant base oils (materials with similar structure and physico-chemical properties) indicates that other lubricant base oils have viscosities ranging from 3.08 to 11 mm²/s at 100°C (CONCAWE, 1997).
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