CHEMICALS AND ALLIED APPLICATION NOTE 4.06.03 AVIATION DE-ICING FLUID SPRAYING AND RECOVERY www.kpatents.com ETHYLENE GLYCOL CH 2 OH 2 , PROPYLENE GLYCOL C 3 H 8 O 2 Typical end products Airplane de-icing Chemical curve: R.I. per BRIX at Ref. Temp. of 20°C Introduction Aviation de-icing and anti-icing fluids, such as ethylene glycol (EG) or propylene glycol (PG), keep atmospheric ice from accumulating on aircraft’s f

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