KEMKO 161 CSA Coat

Coatings - Concentrated Sulfuric Acid Resistant Low Viscosity Novolac Epoxy System

KEMKO 161 CSA Coat – Concentrated Sulfuric Acid Resistant, Low Viscosity Novolac Epoxy Coating

 KEMKO 161 is a high-performance epoxy coating system engineered for applications requiring chemical resistance, especially against concentrated sulfuric acid. It is suited for both protective and structural applications across industrial environments.

 KEMKO 161 is a multifunctional “thru system” material, meaning it can serve as:

·      Primer

·      Body Coat

·      Binder for trowel-down aggregate

·      Receiving Coat for broadcast systems

·      Grout Coat

·      Top Coat

This makes it versatile for single or full-system build-ups on concrete and steel surfaces.

 Common application areas include:

·      Crude oil storage tanks

·      Food processing and semi-conductor manufacturing facilities

·      Internal linings of tanks and pipes

·      Mining, milling, and petrochemical industries

·      Pulp and paper plants, wastewater facilities, and power generation stations

·      Secondary containment systems and structural steel protection

·      Mix Ratio: 2:1 (by volume), 100:39 (by weight)

·      Application Methods: Brush, roller, squeegee, trowel, or two-component spray

·      Surface Prep: CSP 2 to CSP 4 per ICRI 310.2R; concrete must be ≥250 psi direct tension strength; steel to SSPC-SP 5/NACE No. 1 white metal blast standard

·      Recoat Window: 6–32 hours at 73°F (23°C), shortened at higher temperatures

·      Pot Life (200g mix): ~40 minutes

·      Tack-Free Time: 6 hours; Hard Dry: 16 hours

·      Substrate Temp. Range: Minimum 50°F (10°C); Maximum service temp. should not exceed 20°F below Heat Deflection Temp (115°F)

·      Full Cure Consideration: Based on ambient conditions and service demands

Coverage and Thickness:

·      Standard Coating Build (3 coats): 8–10 mils (0.2–0.25 mm) per coat

·      Total Build for Broadcast System: 86–94 mils (2.2–2.4 mm)

·      Coverage Rate per Coat: 160–200 sq. ft./gal

·      Aggregate Extension: Up to 2:1 sand to resin for patching, yielding ~500 in³ per gallon of mixed material

·      UV Resistance: Not UV stable; surface may chalk with prolonged sunlight exposure, though performance is unaffected

·      Chemical Resistance: Rated Excellent (E) against sulfuric acid (up to 98%), hydrochloric acid, nitric acid (10%), various organic acids, solvents like gasoline, diesel, and alcohols (limited) – see full chart on page 4 of TDS

·      VOC Content: 100% solids, solvent-free, zero VOC formulation

·      Packaging: Available in 3, 15, and 150-gallon kits

·      Shelf Life: Minimum 3 years unopened, stored at 50–90°F (10–32°C)

·      Safety Notes: Part B (hardener) is a serious health hazard – use adequate PPE and ventilation. Follow SDS guidelines strictly.