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» Air
Depending on the application, volatile methylsiloxanes (VMS) may evaporate into
the air before entering other environmental compartments such as water
or soil. In air, they are degraded in the presence of sunlight, ultimately
to give harmless substances such as silicica, water and carbon dioxide.
Experiments also show that siloxanes do not contribute to ground level ozone pollution,
and because of this, have not been classified as Volatile Organic Carbons
(VOCs) in the US. On account of their relatively short atmospheric life
they do not reach the upper atmosphere to affect the ozone layer.
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