Powerful scale removal / Controlled equipment protection
Green Acid® is a concentrated, non-oxidizing cleaning acid developed for removing mineral scale, rust and inorganic deposits from industrial water systems and equipment.
Green Acid® combines acid-cleaning performance with scale inhibitors, corrosion inhibitors, surfactants and a visible color indicator. It is intended for dissolving deposits such as calcium carbonate, gypsum, calcium phosphate, calcium oxalate and metal oxides from pipelines, tanks, boilers, heat exchangers, cooling systems and other compatible equipment. Its low vapor pressure helps reduce acid fumes and gas-phase corrosion compared with volatile mineral acids. SCALE-OVER™ is the formulated working solution based on Green Acid® technology for direct industrial descaling and cleaning applications.
Fast descaling / Low-vapor cleaning technology
One cleaning chemistry.
Multiple industrial applications.
Green Acid® and SCALE-OVER™ can be used in properly controlled circulation, soaking, spray-cleaning and equipment-maintenance procedures after confirming deposit composition and material compatibility.
Cooling Towers and Chillers
Removes mineral deposits and corrosion products from compatible cooling circuits, fill material, piping and heat-transfer surfaces.
Boilers and Heating Systems
Helps dissolve deposits that restrict water flow and reduce heat-transfer efficiency.
Heat Exchangers and Condensers
Cleans scale from internal passages and heat-transfer surfaces without mechanical dismantling where circulation cleaning is suitable.
Pipelines, Pumps and Process Equipment
Removes rust, carbonate scale and accumulated inorganic deposits from compatible industrial equipment.
Water Tanks and Reservoirs
Supports the removal of iron and manganese deposits from emptied and isolated water-storage surfaces.
Mining and Heavy-Industry Equipment
Cleans scale and mineral deposits from suitable equipment used in mining, mineral processing and industrial water operations.
Four cleaning functions / Engineered into one formulation
Mineral-scale dissolution (ACID-ACTIVE)
Acidic species react with susceptible carbonate, phosphate, sulfate and metal-oxide deposits, helping transfer the dissolved components into the cleaning solution.
Inhibited metal cleaning (CORRO-GUARD)
A corrosion-inhibitor package is designed to reduce attack on compatible base metals during properly controlled cleaning.
Wetting and deposit penetration (DEPOSIT-LIFT)
Surfactants improve contact between the cleaning solution and deposit surface, supporting penetration, dispersion and removal.
Visible activity indication (COLOR-CONTROL)
A trace-color system provides a visual indication of solution condition and can help operators recognize when the cleaning solution is becoming exhausted.
The chemistry behind controlled descaling
Green Acid® uses acidic dissolution, surface wetting and corrosion inhibition to remove mineral deposits while limiting unnecessary damage to compatible equipment materials.
- Carbonate-Scale Dissolution – Acid reacts with calcium carbonate scale ($CaCO_3 + 2H^+ \rightarrow Ca^{2+} + H_2O + CO_2\uparrow$), producing soluble calcium, water and carbon dioxide gas.
- Metal-Oxide and Rust Removal – Acidic conditions dissolve susceptible iron oxides and hydroxides for easy removal during circulation and rinsing.
- Deposit Penetration and Dispersion – Surfactants lower surface tension and improve wetting, helping the solution penetrate porous deposits and carry loosened solids away.
- Corrosion-Inhibition Mechanism – Inhibitors adsorb on compatible metal surfaces to reduce acid attack, depending on concentration, temperature, time, alloy and solution condition.
Download Green Acid® documents
Explore industrial cleaning and descaling
Frequently
Asked Questions
Essential information about Green Acid®, SCALE-OVER™ and controlled industrial cleaning.
Contact SupportPlan a safer industrial cleaning programme
Effective descaling begins with deposit analysis and material compatibility.
Send us your equipment type (heat exchanger, boiler, cooling tower), scale composition, system volume and cleaning objectives. Our specialists will help evaluate Green Acid® and SCALE-OVER™ for your industrial maintenance procedure.
