OS OXY SCAV M - Powder Oxygen Scavenger
Oxygen Scavengers are commonly added to drilling fluids and completion fluids to mitigate the adverse effects of dissolved oxygen in downhole environments. Dissolved oxygen can radically decompose polymeric additives in the drilling fluid and can corrode the metal casing and the drill pipe.
OS OXY SCAV M is a powder oxygen scavenger designed to remove dissolved oxygen from aerated water. It is suitable for use in both fresh and salt water based systems and is an alternative for use in cold climate conditions.
OS OXY SCAV M is water soluble and should be mixed prior to using in an active system. OS OXY SCAV M performs well in systems experiencing high temperature conditions.
Typical Physical Properties
Appearance - White crystalline powder
Appearance 20% soln - Clear and colourless or pale yellow
Formula - Na2S2O5
Molecular weight - 190.12
Bulk density - 1.2 – 1.3 kg/dm3 approx.
Water solubility -
toC 10 15 20 25 30 40 50 60 70 80_
g Na2S2O5 38.8 39.2 39.6 40.1 40.5 41.7 42.8 44.1 45.5 46.9
/100 g soln
Assay - % Na2S2O5 > 98, % SO2 > 66
Thiosulphate - % S2O3 < 0.04
Iron - % as Fe < 0.0005
Heavy metals - % as Pb < 0.001
Make a maximum sodium metabisulphite solution strength of 40% by adding 400 kg of OS OXY SCAV M to 600 kg of demineralised water (max 30oC).
OS OXY SCAV M is packaged in 25 kg sacks.