Water Treatment Chemicals Supplier for Boiler, Cooling & Process
Scale inhibitors, corrosion inhibitors, biocides, and chelating agents for industrial water treatment, supplied in bulk from South Africa to operations worldwide
Terracore Chemicals is a water treatment chemicals supplier based in South Africa, supplying scale inhibitors, corrosion inhibitors, biocides, and chelating agents to industrial water treatment operations across the region and internationally. As a dedicated water treatment chemicals supplier, we stock the phosphonate and polymer chemistries used to control scale and corrosion in boiler systems, cooling towers, and process water circuits, alongside biocides for microbiological control and chelating agents for metal ion sequestration.
Our range covers everything from HEDP and HPAA phosphonates through to pH-buffering phosphate salts and coagulant chemicals for raw water treatment, with technical documentation available on every product. Whether you’re treating a single cooling tower or managing water chemistry across a full industrial site, working with an established water treatment chemicals supplier means consistent quality and reliable supply. Looking for a different product line? See our full range of chemical divisions.
Our Water Treatment Chemical Categories
Nine chemical families covering scale control, corrosion protection, microbiological control, coagulation, and process water treatment.
Scale & Corrosion Inhibitors
Phosphonate chemistries (HEDP, HPAA, ATMP, DTPMP) that chelate metal ions to prevent scale and protect metal surfaces.
Inhibitor Polymers
Polymer and polyphosphate scale inhibitors for calcium sulfate and barium sulfate scales phosphonates handle less effectively.
Chelating Agents
EDTA and related chemistries for binding metal ions in water systems and cleaning formulations.
Biocides & Disinfectants
Quaternary ammonium biocides, oxidising disinfectants, and dechlorination chemicals for microbiological control.
pH Control Chemicals
Phosphate salts and hydroxides for pH buffering and protective layer formation in boiler systems.
Boiler & Steam Chemicals
Neutralizing amines and oxygen scavengers for corrosion protection in boiler and condensate systems.
Coagulants & Process Chemicals
Aluminum, iron, and polymer-based coagulants and flocculants for raw water and wastewater treatment.
Corrosion Inhibitors (Non-Phosphonate)
Benzotriazole, molybdate, and acetylenic corrosion inhibitors for metal protection outside the phosphonate family.
Fluoridation Chemicals
Fluorosilicic acid for municipal drinking water fluoridation programs.
Understanding Our Water Treatment Chemical Categories
What each chemical family does, and which water systems it’s used in.
Scale & Corrosion Inhibitors (Phosphonates)
HEDP, HPAA, ATMP, and DTPMP are organophosphonate compounds that chelate calcium, magnesium, and iron ions in water systems, preventing them from precipitating as scale on heat exchange surfaces. HEDP remains stable at temperatures up to 250°C, making it a standard choice for boiler and cooling tower systems, while HPAA offers stronger corrosion protection in low-hardness, corrosive water conditions. ATMP is particularly effective at low dosage in high-alkalinity water. These phosphonates are typically dosed at 1–10 mg/L as a scale inhibitor and 10–50 mg/L for corrosion inhibition, and are frequently used alongside polymer inhibitors for broader scale-type coverage.
Inhibitor Polymers
Copolymer of Maleic and Acrylic Acid, Hydrolyzed Polymaleic Anhydride (HPMA), and Polyacrylic Acid provide scale control where phosphonates alone aren’t sufficient, particularly for calcium sulfate and barium sulfate scales. HPMA remains thermally stable up to roughly 300°C, useful in higher-temperature systems. Sodium Hexametaphosphate (SHMP) is a polyphosphate dispersant used similarly, particularly in lower-temperature process water applications.
Chelating Agents
EDTA is a broad-spectrum chelating agent used to bind calcium, magnesium, and heavy metal ions, preventing scale formation and metal-catalysed degradation in water systems and cleaning formulations.
Biocides & Disinfectants
Benzalkonium Chloride is a quaternary ammonium biocide used for microbiological control in cooling water and process water. Oxidising disinfectants including Hydrogen Peroxide, Bromine, Potassium Permanganate, Sodium Chlorite, Sodium Dichloroisocyanurate, and Trichloroisocyanuric Acid (TCCA, in granule, powder, or tablet form) provide broader-spectrum microbiological and algae control, particularly for pool, municipal, and cooling water applications. THPS is a non-oxidising biocide commonly used in oilfield and industrial water systems. Sodium Bromide and Sodium Thiosulfate round out this group as a bromide activator and a dechlorination agent respectively.
pH Control Chemicals
Disodium Hydrogen Phosphate, Trisodium Phosphate, and Monosodium Phosphate are used for pH buffering and phosphate-based corrosion inhibition in boiler water treatment, forming a protective magnetite layer on internal boiler surfaces. Calcium Hydroxide is used more broadly for raw water pH correction and softening.
Boiler & Steam Chemicals
Isopropylamine and Diethylhydroxylamine are used as neutralizing and oxygen-scavenging amines in boiler and condensate systems, protecting return lines from corrosion. Sodium Sulfite and Ammonium Bisulphite serve as chemical oxygen scavengers, removing dissolved oxygen from boiler feedwater to prevent pitting corrosion.
Coagulants & Process Chemicals
This is our broadest water treatment group, covering the primary coagulants used in raw water and wastewater clarification: Aluminum Chloride Hexahydrate, Aluminum Sulfate, Ferric Sulfate, Ferric Chloride, and Potassium Alum work by neutralising the charge on suspended particles so they clump and settle. PAC (Polyaluminum Chloride), Polyamine, and PolyDADMAC are synthetic coagulants used where faster or more consistent floc formation is needed, often paired with Polyelectrolytes as flocculant aids. Ferrous Sulfate Heptahydrate, Barium Carbonate, and Calcium Chloride Dihydrate round out this group as an iron source, a sulfate-removal agent, and a hardness/de-icing chemical respectively.
Corrosion Inhibitors (Non-Phosphonate)
Benzotriazole is a specialty corrosion inhibitor specifically effective on copper and copper alloy surfaces, common in cooling systems with copper heat exchangers. Sodium Molybdate provides corrosion protection as a lower-toxicity alternative to chromate-based inhibitors. Propargyl Alcohol is used as a corrosion inhibitor intermediate, particularly in acidic cleaning and oilfield applications.
Fluoridation Chemicals
Fluorosilicic Acid is the standard chemical used in municipal water fluoridation programs, dosed at controlled low concentrations to support dental health outcomes in treated drinking water supplies.
Frequently Asked Questions
What does a water treatment chemicals supplier provide?
A water treatment chemicals supplier provides the scale inhibitors, corrosion inhibitors, biocides, and chelating agents used to manage water chemistry in boilers, cooling towers, and industrial process systems. Terracore Chemicals supplies all four chemistries so operations can source a complete water treatment program from one supplier.
Do you supply water treatment chemicals internationally?
Yes — Terracore Chemicals exports water treatment chemicals from South Africa to operations across Africa and internationally, with bulk and drum shipping options.
Can HEDP and similar phosphonates be used together with polymer inhibitors?
Yes — phosphonates and polymer scale inhibitors like HPMA are frequently dosed together for broader scale-type coverage than either chemistry alone provides.
Is technical documentation available for these products?
Yes, Certificates of Analysis and spec sheets are available on request for every product in this range.
What’s the difference between a phosphonate and a polymer scale inhibitor?
Phosphonates like HEDP work by chelating metal ions and are generally most effective against calcium carbonate scale, while polymer inhibitors like HPMA disperse particles and handle calcium sulfate and barium sulfate scales more effectively — many water treatment programs use both together.
All Water Treatment Chemical Products
45 products across 9 categories
Scale & Corrosion Inhibitors (Phosphonates) (5)
Inhibitor Polymers (4)
Chelating Agents (1)
Biocides & Disinfectants (11)
pH Control Chemicals (4)
Boiler & Steam Chemicals (4)
Coagulants & Process Chemicals (12)
Corrosion Inhibitors (Non-Phosphonate) (3)
Fluoridation Chemicals (1)
How to Choose Between Phosphonates and Polymers
Scale type is the main factor when choosing a water treatment chemicals supplier’s inhibitor range. Phosphonates like HEDP and HPAA are typically the first choice for calcium carbonate scale, while polymer inhibitors such as HPMA perform better against calcium sulfate and barium sulfate deposits. Many operations run a phosphonate and a polymer together for broader coverage across scale types. System temperature also matters: HEDP holds up to roughly 250°C, while HPMA remains stable to around 300°C, making it the better option for higher-temperature boiler applications.
Water chemistry plays a role too: for low-hardness, corrosive water, HPAA tends to offer stronger corrosion protection than standard phosphonates, while high-hardness or alkaline water systems generally do better with HEDP or similar phosphonates. If your system uses chlorine-based disinfection, chlorine-resistant chemistries such as HEDP maintain performance where less stable inhibitors break down. As a water treatment chemicals supplier working across boiler, cooling tower, and process water applications, Terracore can help match the right chemistry to your specific water conditions. Get in touch with your system parameters for a recommendation.
Why Source Water Treatment Chemicals From Terracore
Bulk & Drum Supply
Flexible order quantities from trial drums to full container loads, so you can trial a new inhibitor before committing to bulk volumes.
Technical Documentation
Certificates of Analysis and spec sheets available on request for every phosphonate, polymer, and biocide we supply.
Export-Ready Logistics
As a water treatment chemicals supplier shipping across Africa and international markets, we handle bulk and drum export logistics end to end.
Need a Water Treatment Chemicals Quote?
Tell us your system type , boiler, cooling tower, or process water, and we’ll respond with pricing and specifications.
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