Honest Coating, Concentrated Sulfuric Acid Resistance is a two - component, rigid, epoxy coating with
excellent resistance to concentrated sulfuric acid, other strong acids and bases, and many chemicals found
in industrial environments. When seeded or blended with aggregate, it can be used on properly prepared
concrete and steel substrates to provide a chemical resistant surface with excellent slip/skid resistance and
wear characteristics. The product is ideally suited for use in containment areas requiring resistance to
strong acids or bases. Honest Coating, Concentrated Sulfuric Acid Resistance will bond to properly prepared
dry and damp concrete substrates and cures to a tough, blush free, tile like surface. In outdoor use, the
coating is freeze/thaw resistant and will not embrittle but will acquire a chalky surface when exposed to
sunlight. The standard color is concrete gray (beige gray).
Convenient 2: 1, by vol. mix ratio
Fast cure for short downtime
Cures to a tough, blush-free, tile-like surface
Bonds to dry and damp substrates.
Does not embrittle when exposed to direct sunlight
Resistant to most strong acids and bases
Environmentally safe-No VOC solvents
Limitations: Do not apply on wet substrates. Minimum
installation and cure temperature is 60 deg F. Apply after daily
substrate temperature has peaked. Substrates on or below
grade must have a functioning vapor barrier to minimize the
potential for blistering or delaminating of the applied coating.
Broadcast aggregate must be resistant to the chemicals used
in the exposure area and must be completely encapsulated by
a topcoat. Exposure to 98% sulfuric acid will cause formation
of a reddish surface film that can be removed by washing with
water. Do not add solvents or otherwise thin this material.
Coating Thickness, mil Square feet/gallon
Packaging & Colors: Package sizes of Part A + Part B are 3
and 15 gallons. Color is off-white; custom colors available
Shelf Life: Three years minimum in unopened, original
containers when stored between 60 and 90 deg F in a dry
place away from sunlight. Remixing of components may be
required upon long-term storage.
Surface Preparation: Concrete surfaces may be dry or damp
(not wet) though dry substrates are preferred and must be
sound and free of all bond-inhibiting substances. Prepare
surfaces in accordance with ASTM D 4259 or ACI 503R and
ChemCo Systems' specific recommendations. Cleaned
concrete surfaces should have a minimum strength of 250 psi
in direct tension. Steel surfaces should be cleaned to "white
metal" according to SSPC SP 5. Galvanized steel and
aluminum are difficult substrates to coat end require special
Mixing: Honest Coating, Concentrated Sulfuric Acid Resistance
is a two-component system. The resin to hardener (Part A :
Part B) mix ratio is 2 :1, by volume. Read all material safety
data (MSDS) information before handling the product. Wear
safety glasses and clean neoprene rubber gloves when
handling the materials. Premix the individual components
before use. Transfer appropriate quantities of Part A and Part
B into a mixing container. Use quantities that can be applied
before the pot life of the mixed material expires. Blend
thoroughly using a Jiffy mixer blade attached to a low speed
(350 - 750 rpm) electric or pneumatic drill. Proper mixing will
take 2 - 3 minutes.
Installing: The recommended applied thickness for floor and
wall coatings is two coats minimum at 6 - 8 mils per coat. Apply
in multiple thin coats rather than one thick coat using a stiff
bristle brush, short nap roller, squeegee or two-component
spray equipment. Subsequent coats may be applied as soon
as the previous coat is “touch” dry (6 - 7 hr @ 70 F). Avoid
excessive cure times between coats. The recommended
applied thickness for floor surfacings is single or multiple coats
at 20 - 30 mils per coat. Pour mixed material onto the substrate
and spread to the desired coverage with e V-notch trowel or
squeegee. Aggregate, if used, must be broadcast onto the
coating within 15 minutes of application. The recommended
aggregate size is #20 x 40 or #30 x 50 mesh. Typical
aggregate broadcast rates are .75 - 1.50 lb/sq ft.
Clean up: Excess mixed product is best removed from the
work area end tools before it hardens. Use of rags and
solvents such as acetone or heavy-duty detergents facilitate
cleaning. Cured product may be removed from tools by
soaking in an epoxy stripper.
TYPICAL PROPERTIES (1)
Property ( 2) Test Method Value
Mix Ratio, A:B, by vol 2: 1
by wt 100: 39
Color: Part A VISUAL Concrete beige-gray
Part B Clear amber
Mixed Concrete beige-gray
Weight per Gallon, lb: Part A ASTM D 1475 10.3
Part B 8.3
Viscosity, p: Part A ASTM D 2393 63
Part B 14
Gel Time, 200 g, minutes ASTM D 2471 40
Thin Film Touch Dry Time,:touch dry ASTM D 1640 6
Hours hard dry 16
Recoat Time, hours: @ 60 F CHEMCO 10-72
@ 73 F 6-32
@ 90F 4-16
Tensile Strength, psi ASTM D 638 6500
Elongation at Break, % ASTM D 638 2.0
Compressive Yield Strength, psi ASTM D 695 10,500
Compressive Modulus, psi ASTM D 695 300,000
Heat Deflection Temp., deg F ASTM D 648 115
Hardness, Shore D ASTM D 2240 85
Taber Abraser, mg loss ASTM D 4060 117 (2)
Bond Strength To Damp ASTM D 4547 250 (3)
ASTM C 109 Cement Mortar, psi
(1) Cure schedule, 7 days at 73 ± 4 F and test temperature, 73 ± 4 F unless otherwise indicated.
(2) CS-17 wheels, 1000 g load, 1000 cycles.
(3) Compressive strength of cement mortar, 4500 psi.
Typical Chemical Resistance Properties (Weight change upon immersion)
Chemical Temp. deg F Time, days Weight Change, %
98% Sulfuric Acid 73 30 -0.8
25% Sulfuric Acid 73 7 + 0.2
10% Acetic Acid 73 7 +0.2
50% Lactic Acid 73 7 +0.6
Handling and Toxicity: This bulletin does not accompany the product when sold. For hazard warnings, safe handling and first
aid instructions, READ CAREFULLY THE MATERIAL SAFETY DATA SHEETS AND CONTAINER WARNING LABELS.
Part A: Liquid epoxy resin, HMIS Health Hazard Rating - 2 (Moderate Hazard). Warning! Causes eye and skin irritation. May
cause allergic skin reaction. Harmful if swallowed. Avoid contact with eyes, skin and clothing. Wash thoroughly after handling.
Avoid prolonged or repeated contact with skin.
Part B: Liquid epoxy hardener, HMIS Health Hazard Rating - 3 (Serious Hazard). Contains alkaline amines. Danger! Causes
severe eye and skin burns. May cause allergic skin and respiratory reaction. Combustible, corrosive. Do not get in eyes or skin
or on clothing. Avoid breathing vapor. Keep container closed. Use only with adequate ventilation. Wash thoroughly after
handling. Keep away from heat and open flame
DISCLAIMER: NO EXPRESS WARRANTY IS MADE WITH RESPECT TO THE RESULTS OF ANY USE OF THIS PRODUCT. NO IMPLIED
WARRANTIES, INCLUDING AND NOT LIMITED TO AN IMPLIED WARRANTY OF MERCHANTABILITY OR AN IMPLIED WARRANTY OF
FITNESS FOR A PARTICULAR PURPOSE ARE MADE WITH RESPECT TO THIS PRODUCT. NO LIABILITIES FOR PERSONAL INJURY,
LOSS OR DAMAGE RESULTING FROM THE USE OF THIS PRODUCT IS ASSUMED. CHEMCO SYSTEMS, INC., RESERVES THE RIGHT
TO ALTER OR DISCONTINUE THE PRODUCT DESCRIBED HEREIN AT ANY TIME AND WITHOUT PRIOR NOTICE.
CCSTM is a trade name of ChemCo Systems, Inc.
Publication Number: 3 EP CCS-161, Conc. Sulfuric Acid Resistance Publication Date: Dec. 1998