health and safety plan solid waste management unit assessment

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TABLE 68-1
- Continued
HYDRAULIC OILS
Base Stock Structure/Co-ion Prooerties/Characteristics
8. Organic esters= Includes:
Honoesters (monobasic acid
esters or polyolesters)
diesters
triester
polyesters
0
II
RO-C+CH2)n-C-OR
(a diester-most common, based on
a dibasic acid)
(n is commonly 8-10)
Diesters are derived from C6 -
Cl0 acids (i.e., adipic,
azelaic, sebacic) and C - C
alcohols (i.e., 2-ethylhexylq
3,5,5-trimethylhexyl, igodecyl,
and tridecyl alcohols).
UW typically 200-600; can be
approximately 1000 for complex
esters. Vapor pressures
approximately 0.3 - 4.0 mm Hg at
205'C.
Their uses include automotive
engine oils (occasionally
blended SO/SO with mineral
oils), and jet and aircraft
engines.
Organic esters are the most
common synthetic lubricants used.
Used widely by the military in
aircraft applications.
c. I