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Silicone Defoamer RJ-O105T

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RJ-O105T is an efficient silicone based emulsion defoamer used in aqueous system. It can disperse in water rapidly. RJ-O105T has an excellent foam breaking and inhibition performance in wide pH and temperature range. 

RJ-O105T is applicable in oilfield well drilling and cementing.

Technical Index

AppearanceMilky White Emulsion
Viscosity(mm2/s ,25℃)3000~5500 
Ion Typenonionic
Effective content, %10+1


 v  Easily dispersed in water

 v  Wide range of pH and temperature

 v  Rapid foam breaking and long-term foam inhibition capability.


 v  Oil drilling fluid cementing system

 v  Printing pulping, bleaching and dyeing

 v  Biotin fermentation engineering, pulp manufacturing engineering

Recommended Usage

Add the product directly to the foaming system to ensure that it is evenly dispersed. If dilution is required, it is best not to store the diluents for more than 24 hours

For the higher foaming temperature (> 60 ℃), it is suggested that the RJ-O105TH should be added to the system before 60 ℃ to disperse evenly, so as to give full play to its maximum effect..

According to the factors such as viscosity, temperature and agitation of different foaming systems, 10ppm is selected as the unit to select more economical dosage. Generally speaking, the dosage of 30-200ppm can guarantee the ideal defoaming effect. Some industries, such as biological fermentation, may need 2-5 per thousand.


RJ-O105T is available in 25kg, 50kgs , 200kg plastic drum and other packing on request.

Transportation and storage

Transport as non-hazardous chemicals. Sealed storage within10~30℃,and heating and freezing are not allowed in transportation and storage.

Shelf life

Shelf life: 6 months.