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Capstone™ FS-51
As of early 2025, Chemours Capstone™ has been discontinued, and ChemPoint is committed to helping customers find alternatives. We offer Momentive CoatOSil™ and Silquest™, silicone-based surface-modifying additives, and ICT Thetawet™, Thetaguard™, and Thetapel™ fluorosurfactants and fluoropolymers. Contact us, and one of our technical experts will assist you in finding the closest option for your formulation.
Capstone™ FS-51 is an amine oxide-based amphoteric fluorosurfactant. It is used in industrial cleaning solutions to provide sustained foam and reduce surface tension of aqueous formulations.
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- Manufacturer: Chemours
- Product Line: Capstone™ Fluorosurfactants
- Product: Capstone™ Surfactants and Coating Additives
- Industries: Adhesives | Building & Construction | Care Chemicals | Coatings
- Authorized Countries: Canada | United States
Fulfilled By ChemPoint
Fulfilled By ChemPoint
Manufacturer
Product Line
Industries
Authorized Countries
Canada
United States
Overview
Capstone™ FS-51 an amphoteric fluorosurfactant that is used as a foaming agent and to reduce surface tension of aqueous formulations. The reduction is surface tension provided by Capstone™ FS-51 combined with the sustained foam make it an ideal additive for industrial and institutional cleaners. Capstone™ FS-51 also allows for the formation of thin, low surface tension aqueous films. This makes it a useful additive in formulations that require defect -free films to be formed over low surface energy or contaminated substrates. Capstone™ FS-51 is available commercially as a 40% solids solution in water and ethanol packaged in pails, drums, and totes.
Note: All samples and purchases of Capstone for new projects and applications must first be evaluated for approval by ChemPoint and Chemours.
Specifications
Appearance: Clear to amber-colored liquid
Chemical Structure: Amine oxide partially fluorinated surfactant
Composition: 40% solids in water/ethanol
Specific Gravity: 1.07 g/mL
Thermal Stability: Stable up to 175 °C (347 °F)
pH: 6.5-8.5
Flash Point (closed cup): 25 °C (77 °F)
Solubility at 25 °C (77 °F): Soluble in water, ethanol and ethylene glycol
Shelf Life: 5 years
Primary Chemistry:
Amphoteric Fluorosurfactant
Features & Benefits
- Reduces the surface tension of aqueous solutions
- Useful in providing sustained foam facilitates the formation of a thin low surface tension aqueous film
- Aids in creation of surface defect-free films over low surface tension
- Improves wetting, spreading, and leveling properties
- REACH compliant
- Listed on TSCA inventory
Problems Solved
High degree of work required to develop sustained foam in industrial and institutional products.
Surface defects caused by high surface tension of aqueous formulations.
Applications
Capstone™ FS-51 is used in latex paints, alkyd emulsions, and floor care products to improve wetting and leveling to reduce the amount of surface defects like pinholes, cratering, and orange peel.
Capstone™ FS-51 is also used to provide sustained foam for industrial and institutional cleaning products.
It will also help improve penetration and wetting of difficult soils.
Related Applications
Related Chemistries
Related Functions
Building & Construction
Care Chemicals
Coatings
Related Technologies
Coatings
Capstone™ Fluorosurfactants Articles
Chemours Capstone® LCPFAC & SNUR Regulations
Capstone® fluorosurfactants & fluororepellents were some of the first short-chain alternatives commercialized so Chemours has lots of experience helping their customers reformulate.
Chemours Zonyl® To Capstone™
Capstone™ fluorosurfactants and repellents were introduced as sustainable replacements that meet the goals of the U.S. EPA 2010/15 PFOA Stewardship Program. They are based on short-chain molecules that cannot break down to PFOA or PFOS in the environment.
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