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Registration Dossier
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EC number: 293-262-2 | CAS number: 91053-00-8 A complex combination of hydrocarbons obtained from distillation of the butadiene-free C4 fraction of a naphtha steam-cracking process. It consists predominantly of olefinic hydrocarbons having carbon numbers of C8, C12, C16 and C20 and boiling in the range of approximately 95°C to 120°C (203°F to 248°F).
Viscosity
Administrative data
Link to relevant study record(s)
Description of key information
The viscosity of members of this category have been measured in the range 1.66 mm2/s at 20°C (C12) – 6.84 mm2/s at 20°C (C16) indicating that viscosity increases with carbon number. The viscosity of C8 category members is therefore expected to be <1.66 mm2/s at 20°C.
In a guideline, proprietary study (Evonik 2009) the kinematic viscosity of 97280-83-6 was found to be 1.66 mm2/s (static) at 20°C. In a guideline, proprietary study (Aqura 2009) the kinematic viscosity of tetrabutene was found to be 6.84 mm2/s (static) at 20°C and 3.96mm2/s(static) at 40°C. In a proprietary supporting study (Aqura 2009) the dynamic viscosity of tetrabutene was found to be 5.55 mPa.s at 20°C.
These data will be read across to other members of the category.
New data areavilable for 5 streams in this category from Intertek (2018):
EC# 500-001-0_Intertek 2019_Key: 2.4655 mm2/s at 40ºC.
EC# 500-004-7_Intertek 2019_Key: 2.2383 mm2/s at 40ºC
EC# 293-263-8_Intertek 2019_Key: 1.416 mm2/s at 40ºC
EC# 306-479-5_Intertek 2019_Key: 1.232 mm2/s at 40ºC.
EC# 293-262-2_Intertek 2019_Key: 3.419 mm2/s at 40ºC.
The mean of the static viscosity values for the category is 4.25 mm2/s at 20°C and this has been used to complete the 'key value for chemical safety assessment'.
Key value for chemical safety assessment
- Viscosity:
- 4.25 mm²/s (static)
- at the temperature of:
- 20 °C
Additional information
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