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By certification 
ME-DEFOA is a blend of non-ionic surfactants and silicone polymer.
ME-DEFOA is used to prevent or eliminate foaming tendencies in water-based fluids or brains.
Advantages
Reduction or elimination of foaming
Effective at low concentrations
Compatible with a range of water-based fluids and brines.
Fast de-foaming, Long - lasting Antifoaming effect and strong chemical inertness.
Good rheological property and stability
Can be added directly to the circulating system
Contains no petroleum hydrocarbons
It has good de-foaming effect on the refractory foam caused by xanthan gum or sodium carboxymethyl cellulose as viscosifier.
Can be used in oil treatment process to replace of De-emulsifier.
It has good de-foaming effect by 45ppm, inhibition effect by 70ppm, and recovery rate of density reach to 90% by 50ppm
The rate can reach 91%
Typical Properties
Appearance: Clear liquid
Specific gravity: 0.98-1.05
PH : 6.0-8.0
Fluorescence level: 0
Flash point: >160°C
The product is emulsion, if the product is found to have micro delaminating, the shake should be added evenly.
Recommended Treatment
Add 0.25 - 0.50 kg/m³ ME-DEFOA directly to the circulating system. ME-DEFOA can be added before lubricants which may have a foaming tendency.
http://www.medrillingfluids.com/
