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TECHNICAL INFORMATION
DuPont™ Capstone™ FS-50
fluorOsurfactant
Description
DuPont™ Capstone™ FS-50 is an amphoteric fluorosurfactant that
signifcantly reduces the surface tension of aqueous solutions
and is also useful in providing sustained foam. It is based on six
fluorinated carbon molecules that cannot break down to PFOA in
the environment.
Features
Capstone™ FS-50 enables the formation of a thin low surface
tension aqueous film, which is useful for creating surface defectfree
films over low surface tension or contaminated substrates.
It:
• Meets the goals of the voluntary U.S. EPA 2010/15 PFOA
Stewardship Program
• Targeted below LOD* for PFOA
Applications
DuPont™ Capstone™ FS-50 is recommended as a surface tension
reducing and foaming agent for use in:
• Oilfield operations
• Industrial and institutional cleaning
• Floor care products
• Car care products
Product Characteristics
Appearance Clear amber-colored liquid
Chemical structure Amphoteric fluorinated surfactant
Active ingredient, wt% 27
Solvent Ethanol/water
Density at 20°C (68°F) 1.03
Viscosity at 20°C (68°F), cP 9.7
Thermal stability Stable up to 175°C (347°F)
pH 5–6
Flash point (closed cup) 25°C (77°F)
Solubility at 25°C (77°F) Soluble in water, ethanol and
Ross-Miles Foaming Data
Capstone™ FS-50 (0.05% A.I.) mL of Foam After
30 sec 3 min 5 min
Deionized water 540 510 485
Tap water 330 310 310
10% NaCl in distilled water 185 180 180
Surface Tension at 25°C (77°F) in DI Water (mN/m)
0.01% (A.I.) 0.05% (A.I.) 0.1% (A.I.)
20.5 16.0 15.5
Personal Safety, First Aid, Storage, and Handling
Like any other chemical product, fluorinated surfactants
must be handled and used with care (any contact with skin and
eyes is to be avoided). Please refer to the Material Safety Data
Sheet (MSDS) for product specific information. Mix well before
using. Warm the product to room temperature before use after
cold storage.
Copyright © 2008 DuPont. The DuPont Oval Logo, DuPont™, The miracles of science™, and
Capstone™ are registered trademarks or trademarks of E.I. du Pont de Nemours and Company
or its affiliates. All rights reserved.
K-02043-1 (07/08) Printed in the U.S.A.
The information set forth herein is furnished free of charge and based on technical data that DuPont believes
to be reliable. It is intended for use by persons having technical skill, at their own risk. Because conditions
of use are outside our control, we make no warranties, express or implied, and assume no liability in
connection with any use of this information. Nothing herein is to be taken as license to operate under or a
recommendation to infringe any patents.
DuPont Chemical Solutions Enterprise
Customer Service Center
Barley Mill Plaza, Bldg. 23
Wilmington, DE 19898
866-828-7009
www.capstone.dupont.com
*Below the limit of detection (LOD) based on the published analytical
method found in The Journal of Chromatography A, 1110 (2006) 117–124.
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