Hydraulic fluids organic

Metal- Working and Hydraulic Fluids. In the preparation of fluids for metal-working and hydrauflcs, the trend has been to replace organic-based materials with aqueous-based materials. Neodecanoic acid has found apphcation in these newer fluids as a corrosion inhibitor and a viscosity improver. For example, neodecanoic acid is used in an aqueous hydrauflc fluid concentrate for corrosion inhibition and improved antiwear properties (101), in the preparation of a thickened aqueous hydrauflc fluid to reduce viscosity loss (102), and in a water-soluble metal working oil to reduce corrosion (103). In a similar vein, neodecanoic acid has been used in antifreeze concentrates for corrosion inhibition (104). 

Phosphorus oxychloride 10025-87-3 Organic synthesis Plasticizers Gasoline additives Hydraulic fluids Insecticides Dopant for semiconductor grade silicon Flame retardants Tabun (GA) 1.05... 

Dermal exposure of male rabbits to unspecified doses of Cellulube 220 (1-4 hours/day, 4-5 days/week for <46 days) did not elicit histological alterations in the testes (Carpenter et al. 1959). Dermal exposure of male and female rabbits to cyclotriphosphazene at doses < 1,000 mg/kg/day for 6 hours/day, 5 days/week, for 21 days did not affect the reproductive organs (Kinkead et al. 1989c, 1990). No other dermal studies examining reproductive effects in animals were located. This NOAEL value for reproductive effects in rabbits acutely exposed to cyclotriphosphazene hydraulic fluid is recorded in Table 2-8. 

The available data did not adequately identify target organs or effects. In acute lethality studies in rats gavaged with 5,000 mg/kg doses of the water-in-oil emulsion hydraulic fluids or mineral oil hydraulic fluids, no deaths or body weight changes occurred. One of these fluids was tested for neurotoxicity in chickens without effects. 

No data were located regarding toxic effects in humans following oral exposure to polyalphaolefin hydraulic fluids. No deaths or body weight changes occurred in rats in a series of acute lethality studies with nine polyalphaolefin hydraulic fluids at doses ranging from 4,250 to 5,000 mg/kg. One of these fluids was also tested for neurotoxicity in chickens, and did not produce effects at 4,250 mg/kg. The available data have not identified a target organ or effect for these fluids. The data are inadequate for MRL derivation. No intermediate or chronic oral MRLs for polyalphaolefin hydraulic fluids were derived due to the lack of data. 

Mineral Oil Hydraulic Fluids. No associations between occupational exposure to mineral oil hydraulic fluids and cancer occurrence in particular organs were found in a case-control study of cancer patients after adjustment for gasoline exposure (Siemiatycki et al. 1987a). No other studies were located regarding cancer in humans or animals after inhalation, oral, or dermal exposure to mineral oil hydraulic fluids. The... 

Organophosphate Ester Hydraulic Fluids. The biomarkers of effects after exposure to organophosphate ester hydraulic fluids are well established in cases of delayed neuropathy (clinical signs of peripheral neuropathy). Further study would be helpful to determine whether certain effects (such as diarrhea after oral exposure) are due to direct action of the toxic agent on the target organ or to inhibition of acetylcholinesterase at the acetylcholine nerve receptor site on the organ. 

Organophosphate Ester Hydraulic Fluids. Very little information on the food chain bioaccumulation of organophosphate ester hydraulic fluids is available. It is known that some organisms bioconcentrate components of organophosphate ester hydraulic fluids (values are 133-2,807 for rainbow trout and 596-928 for fathead minnows) (Lombardo and Egry 1979 Mayer et al. 1981 Muir et al. 1983a Veith et al. 1979). Given the concerns over the toxicity of this class of hydraulic fluids, further research on this topic would be useful. 

The purpose of this chapter is to describe the analytical methods that are available for detecting, and/or measuring, and/or monitoring hydraulic fluids, their metabolites, and other biomarkers of exposure and effect to hydraulic fluids. The intent is not to provide an exhaustive list of analytical methods. Rather, the intention is to identify well-established methods that are used as the standard methods of analysis. Many of the analytical methods used for environmental samples are the methods approved by federal agencies and organizations such as EPA and the National Institute for Occupational Safety and Health (NIOSH). Other methods presented in this chapter are those that are approved by groups such as the Association of Official Analytical Chemists (AOAC) and the American Public Health Association (APHA). 

High resistance to almost all inorganic chemicals, ammonia being the most important exception. Resistance to most organic compounds, except low molecular weight polar organics. Least resistant of the fluorocarbon rubbers to methanol and phosphate ester based hydraulic fluids. 

Oilfield drilling fluids, organic titanium compounds in, 25 133 Oilfield emulsions, colloid, 7 274t Oilfield hydraulic fracturing fluids, organic titanium compounds in, 25 133 Oil fields, lithium in, 15 124 Oil-field waters, lithium-bearing, 15 128 Oil filters, phenolic resins in, 18 790 Oil-furnace blacks, 4 762 manufacture, 4 780—785 Oil gas, 6 787... 

A molecular sieve bed was used to purify continuously the fire-resistant hydraulic fluid (a triaryl phosphate) in a large hydraulic press. Periodically the sieve bed was regenerated by treatment with steam, and then purified air at 205°C. After 9 years of uneventful operation, the bed ignited on admission of hot air. The fuel source was traced to the accumulation of organic residues (phenols or cresols ) on the sieve which were not removed by the steam/air treatment. 

Uses Manufacture of flotation agents, esters (perfumes and flavors), dyestuffs, wetting agents ingredient in industrial cleaners and paint removers preparation of methyl ethyl ketone solvent in lacquers in hydraulic brake fluids organic synthesis. 

Uses Denaturant for ethyl alcohol solvent for paints, varnishes, cellulose acetate, nitrocellulose lacquers, resins, fats, oils, and waxes preparation of methyl amyl alcohol in hydraulic fluids and antifreeze extraction of uranium from fission products organic synthesis. 

As shown in Figure 1.17, there are three possible dichloroethylene compounds, all clear, colorless liquids. Vinylidene chloride forms a copolymer with vinyl chloride used in some kinds of coating materials. The geometrically isomeric 1,2-dichloroethylenes are used as organic synthesis intermediates and as solvents. Trichloroethylene is a clear, colorless, nonflammable, volatile liquid. It is an excellent degreasing and dry-cleaning solvent and has been used as a household solvent and for food extraction (for example, in decaffeination of coffee). Colorless, nonflammable liquid tetrachloroethylene has properties and uses similar to those of trichloroethylene. Hexachloro-butadiene, a colorless liquid with an odor somewhat like that of turpentine, is used as a solvent for higher hydrocarbons and elastomers, as a hydraulic fluid, in transformers, and for heat transfer. 

Real-World Connection Organic compounds containing silicon, carbon, chlorine, and hydrogen are used to make silicone polymers, which are used in water repellents, electrical insulation, hydraulic fluids, lubricants, and caulks. 

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