health and safety plan solid waste management unit assessment

TABLE 68-l
- Continued
HYDRAULIC OILS
Base Stock Structure/Comn~ion Pros eristics
5. Phosphate esters'
R'O-P
ii
-OR*
I
OR
R can be H or organic groups.
At least 1 R must be an organic
group.
Three classes:
trialkylphosphates, triaryl
phosphates, alkyl-aryl
phosphates; i.e.,:
Excellent fire resistance
properties. MW typically
200-600. Densities approximately
0.9-1.5 g/mL. Boiling points
for trialkylphosphates
approximately 190-3OO'C. Used
in extreme temperature
applications.
;3
i
u
6. Silicate estersC
R)3
(a triaryl phosphate)
Oxygen(s) may be replaced by
sulfur to give thiophosphates.
Two classes:
OR2
I
R1° -si. -OR3
I
OR4
(Orthosilicates)
UW typically 300-800. Densities
approximately 0.8-1.1 g/mL at
2O'C. Vapor pressures 0.1-5.0
mm Hg at 205'C. Boiling points
approximately 93'-482'C. Used
in extreme temperature
applications.