CAB-O-SIL M-5 is a medium surface fumed silica which imparts significant increase in
viscosity in liquid systems, free flow of powders and reinforcement of silicone and organic
All untreated fumed silicas are characterized by:
• High purity
• Aggregated structure
• Submicron particle size
• Low bulk density
• Hydrophilic surface
Rheology Control for Coatings, Adhesive and other Liquid Systems:
CAB-O-SIL M-5 is widely used to provide thickening, thixotrophic (shearthinning),
and anti-settling behavior in liquid systems. M-5 is most efficient in non-polar to medium polarity systems. For more polar systems, treated fumed silicas are more ffective. M-5 offers the best balance of thickening efficiency and dispersibility.
Free-flow of Powder Systems:
When blended into sticky and poorly flowing powder systems, M-5 reduces angle of repose and improves powder flow. During storage of powder systems, M-5 reduces caking and blocking.
Reinforcement of Silicone and Organic Rubber:
CAB-O-SIL M-5 can be used for reinforcement of silicone rubber and can be used to reinforce
organic rubbers. It imparts good increase in hardness, tensile and elongation.
CAB-O-SIL M-5 is packaged in multi-wall Kraft paper bags and flexible intermediate bulk
containers (FIBCs). In North America it is available in poly-shrouded units containing 18 x 10 lb. paper
bags (180 lb. net weight) and in 250 lb. FIBCs. In Europe and Asia it is available in poly-shrouded
units containing 18 x 10 kg paper bags (180 kg net weight) and in 150 kg FIBCs.