A
type of petroleum fluid that derived
from naphthenic crude oil containing
a high proportion of closed ring
methylene groups.
Neutralisation
Number
A
measure of the acidity or alkalinity
of an oil. The number is the mass
in milligrams of the amount of
acid (HC1) or base (KOH) required
to neutralize one gram of oil.
Induction
Period
The
basis of most commonly used automotive
and diesel lubricants, they are
light overhead cuts from vacuum
distillation.
Net
Additive Treating Cost(NATC)
The
cost of additive in one unit of
finished product including base
fluid credit, but not shipping
costs.
Net
Delivered Treating Cost (NDTC)
The
cost of additive in one unit of
finished product including base
fluid credit and shipping costs.
Newtonian
Flow
Occurs
in a liquid system where the rate
of shear is directly proportional
to the shearing force, as with
straight grade oils which do not
contain a polymeric viscocity
modifier. When rate of shear is
not directly proportional to the
shearing force, is non-Newtonian,
as it is with oils containing
viscosity modifiers.
1990
Oxygenated Gasoline
Required annually from September
15 to March 15 for use in CO
non-attainment areas. Oxygenated
gasoline is defined as a spark
ignition engine fuel meeting
ASTMD 4814 specifications and
blended to include a minimum
of 2.0% mass oxygen and a maximum
of 1.0% volume benzene
Nitration
The
process whereby nitrogen oxides
attack petroleum fluids at high
temperatures often resulting in
viscosity increase and deposit
formation.
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