Silicones environmental aspects

With the rapidly growing applications of silicones, it follows that there are concerns to be addressed regarding environmental aspects of the use of these materials. The stability of silicones has been and continues to be thoroughly... 

The continued success of silicon technology needs to keep progressing in terms of both a reduction of material consumption and an increase in device efficiency. Other goals relate to reduced energy content, environmental aspects, standards and manufacturing aspects such as process automation and control. 

Reports have appeared on environmental aspects of the silicones general influence in the environment, influence in aquatic environments, and in soils. A comprehensive review has appeared of the gas-chromatographic analysis of organosilicon compounds, and the determination of (PDMS) in fats and oils. ... 

The health and environmental aspects of poly(dimethylsiloxane) fluids have been reviewed. Sea water saturated with poly(dimethylsiloxane) fluid shows no toxic activity against phytoplanktons, molluscs, crustaceans, and fish. The toxicity of the pyrolysis gases from organosiloxane polymer fluids, rubbers, and resins has been shown to be the least toxic from those of 300 materials tested. Two excellent texts have been published on the analysis of silicones both in bulk and additive forms. > A comparative study of techniques for the trace analysis of Si—H and Si—Cl groups in poly(organosiloxane)s shows that levels of 0.01 p.p.m. H and 1.0 p.p.m. Cl bonded to silicon may be determined, ... 

Antimony (Sb), 3 41-56, 56. See also Group Ill-Sb system InAsSb alloy InSb photodiode detectors/arrays Lead-antimony alloys Low antimony lead alloys Stib- entries in babbitts, 24 797 catalyst poison, 5 257t chemical reactions, 3 42—44 in coal, 6 718 economic aspects, 3 47-48 effect of micro additions on silicon particles in Al-Si alloys, 2 311-312 effect on copper resistivity, 7 676t environmental concerns, 3 50 gallium compounds with, 12 360 health and safety factors, 3 51 in pewter, 24 798... 

Plasma etching, of silicon, 22 492 Plasma FPDs, 22 259 Plasma fractionation, 12 128-159 economic aspects of, 12 147-150 health, safety, and environmental factors related to, 12 153... 

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