SILCOLAPSE 801 U1 is as efficient in aqueous and anhydrous media.
SILCOLAPSE 801 U1 is normally used at concentrations between 1 and 100 mg/kg (or per litre) of system to be defoamed.


  • Is efficient in aqueous and non-aqueous media.
  • Is normally used at low concentrations between 1 and 100 mg/kg (or per liter).
  • Can be formulated into an aqueous emulsion by using commercially available emulsifiers or silicone emulsifiers like BLUESIL SP3300.
  • Can be formulated with other Bluestar SILCOLAPSE compounds in order to improve or change certain performance parameters.
  • Can be formulated with hydrocarbon/oxygenated solvents for some aqueous/non aqueous media.
Regulation compliancy: please contact your local customer service.
Contact your local Elkem Silicones Technical Services Lab for any information. 
SILCOLAPSE 801 U1 may be stored at temperatures between -20°C / -4°F and 50°C / 122°F for up to 18 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.


SILCOLAPSE 801 U1 is a 100% active high viscosity foam control compound.
SILCOLAPSE 801 U1 is part of family of high performance foam control agent specially designed to control foam in aggressive foaming media.



  • Excellent defoaming efficiency with long lasting foam control performance.
  • High efficiency in alkaline conditions and at high temperature.
  • Low dose efficiency, at around 1 to 100 mg per kg of system to be defoamed.
  • Pulp washing efficiency and pulp quality are improved.
  • Excellent pulp drainage.

SILCOLAPSE 801 U1 is used as is or formulated into emulsions which can be used in control foam in high and aggressive foaming media such as:

  • Pulp industry: Recommended for use in the various processing steps (cooking, washing, screening, bleaching and sewage treatment).
  • Detergency: Liquids and powdered detergent, soap.
  • Chemicals: Distillation, extraction, filtration.
SILCOLAPSE 801 U1 can be used in emulsion form or as a booster to silicon and/or organic components. 

Asia Pacific;Europe Middle East Africa;Central and South America;North America




ColorGrey whiteMonocomp
Dry content100Monocomp%
Viscosity70000MonocompISO 2555cP

























New Foam Control Agent For Pulp Operations Foam Control Agent For Pulp Operations












Antifoam / Defoamer / Defoamer