Water Treatment Chemicals

water treatment chemicals

1-Hydroxyethylidene-1,1-Diphosphonic Acid (HEDP)

CAS: 2809-21-4

HEDP is a highly effective organophosphonic acid scale and corrosion inhibitor used in industrial cooling water, boiler water, and oilfield water treatment. It inhibits calcium carbonate, calcium sulfate, and zinc scale through threshold inhibition and crystal modification. HEDP is stable in oxidizing environments and demonstrates strong chelation of metal ions including iron and copper.

water treatment chemicals

2,2-Dibromo-3-Nitrilopropionamide (DBNPA)

CAS: 10222-01-2

DBNPA is a fast-acting, broad-spectrum non-oxidizing biocide used in cooling water, paper mill, and industrial process water treatment. It rapidly penetrates biofilms and kills bacteria, fungi, and algae within minutes of dosing. DBNPA degrades quickly in the environment through hydrolysis, making it an environmentally favorable choice.

water treatment chemicals

2-Mercaptobenzothiazole (MBT)

CAS: 149-30-4

2-Mercaptobenzothiazole is a highly effective copper and copper alloy corrosion inhibitor used in cooling water and closed-loop water systems. It forms a stable protective film on copper surfaces by chelating with copper ions, dramatically reducing corrosion rates. MBT is often used in combination with azole-based inhibitors and phosphonate scale inhibitors in formulated water treatment programs.

water treatment chemicals

2-Phosphonobutane-1,2,4-Tricarboxylic Acid (PBTCA)

CAS: 37971-36-1

PBTCA combines both phosphonate and carboxylate functional groups, giving it dual scale inhibition and dispersancy performance in industrial water systems. It is especially effective in high-pH and high-alkalinity cooling water systems where conventional phosphonates may precipitate. PBTCA also exhibits synergistic corrosion inhibition when used with zinc salts and azoles.

water treatment chemicals

Activated Carbon for Water Treatment

CAS: 7440-44-0

Activated carbon is a highly porous adsorbent material widely used in drinking water and industrial water treatment to remove chlorine, chloramines, taste and odor compounds, organic micropollutants, pesticides, and color. It is available in granular (GAC) and powdered (PAC) forms for fixed-bed and slurry dosing applications. Activated carbon is also used as a dechlorination agent in RO pretreatment and as an adsorbent in wastewater polishing.

water treatment chemicals

Algaecide for Water Treatment

CAS: 7758-99-8

Water treatment algaecides are chemicals used to control and eliminate algae growth in cooling towers, ponds, reservoirs, and industrial water systems. They include copper sulfate, quaternary ammonium compounds, and specialized organic algaecides that disrupt algal cell metabolism. Effective algae control prevents system fouling, reduces oxygen depletion, and eliminates aesthetic and health concerns from algal blooms.

water treatment chemicals

Aluminum Chlorohydrate (ACH) / Aluminum Chloride Solution

CAS: 1327-41-9

Aluminum chlorohydrate solution is a high-basicity aluminum coagulant offering superior performance in drinking water and industrial water treatment applications. Its high charge density accelerates destabilization of colloidal particles at lower dosages than conventional coagulants. It is particularly effective in soft, low-turbidity source waters where standard PAC underperforms.

water treatment chemicals

Amino Trimethylene Phosphonic Acid (ATMP)

CAS: 6419-19-8

ATMP is an organophosphonic acid scale and corrosion inhibitor widely used in industrial water treatment programs. It provides excellent threshold inhibition of calcium carbonate, calcium sulfate, and barium sulfate scales through lattice distortion and crystal growth modification. ATMP also chelates heavy metal ions, preventing their precipitation in water systems.

water treatment chemicals

Anionic Polyacrylamide (APAM)

CAS: 25085-02-3

Anionic polyacrylamide is a high-molecular-weight water-soluble polymer widely used as a flocculant and coagulant aid in water and wastewater treatment. It carries negative charges along its backbone, making it highly effective for flocculating positively charged suspended solids. This product accelerates sedimentation and improves clarity in industrial effluent, municipal sewage, and mineral processing applications.

water treatment chemicals

Antiscalant for RO Membrane

CAS: 37971-36-1

RO membrane antiscalants are specialty formulations designed to prevent the precipitation of calcium carbonate, calcium sulfate, barium sulfate, silica, and metal oxide scales on reverse osmosis and nanofiltration membrane surfaces. They extend membrane life, maintain high permeate flux, and allow operation at higher recovery ratios. These products are certified for use in drinking water RO systems.

water treatment chemicals

Benzotriazole (BZT) Corrosion Inhibitor

CAS: 95-14-7

Benzotriazole is a widely used copper and yellow metal corrosion inhibitor for cooling water systems, closed loops, and antifreeze applications. It adsorbs onto copper surfaces to form a monomolecular protective layer that is highly resistant to oxidation and thermal degradation. BZT is one of the most cost-effective corrosion inhibitors for non-ferrous metals in aqueous systems.

water treatment chemicals

Boiler Water Treatment Program

Boiler water treatment programs are multi-component chemical formulations designed to prevent scale, corrosion, and carryover in steam-generating systems. They typically include oxygen scavengers, scale and deposit inhibitors, pH/alkalinity conditioners, and antifoams. Proper boiler treatment maximizes energy efficiency, extends boiler life, and ensures steam purity for process applications.

water treatment chemicals

Bronopol (2-Bromo-2-Nitropropane-1,3-Diol)

CAS: 52-51-7

Bronopol is a broad-spectrum antimicrobial active against bacteria, including gram-positive, gram-negative, and sulfate-reducing bacteria, used in industrial water systems, oilfield water, and metalworking fluids. It releases formaldehyde and bromine species upon decomposition, providing multi-mechanism antimicrobial action. Bronopol is particularly effective in neutral to mildly alkaline systems.

water treatment chemicals

Cationic Polyacrylamide (CPAM)

CAS: 26590-05-6

Cationic polyacrylamide is a water-soluble polymer with positively charged groups that make it highly effective for flocculating negatively charged suspended particles and colloids. It is extensively used in sludge dewatering, paper manufacturing, and municipal wastewater treatment. Its cationic nature allows direct interaction with negatively charged biomass and organic matter for rapid floc formation.

water treatment chemicals

Chlorine Stabilizer (Cyanuric Acid)

CAS: 108-80-5

Cyanuric acid is a chlorine stabilizer used in outdoor swimming pools, water parks, and recreational water systems to protect free chlorine from rapid photodegradation by UV sunlight. It forms a reversible complex with free chlorine (hypochlorous acid), slowing UV-induced chlorine loss without significantly reducing its disinfection efficacy. Proper use of cyanuric acid can reduce chlorine consumption by up to 80% in outdoor pools.

water treatment chemicals

Cooling Water Treatment Program

Cooling water treatment programs are complete multi-component formulations combining scale inhibitors, corrosion inhibitors, and biocides to protect cooling tower systems and heat exchangers. They simultaneously prevent mineral scale deposition, control metal corrosion of carbon steel, copper, and aluminum, and manage microbiological activity. These programs are customized for specific system water chemistry, metallurgy, and regulatory requirements.

water treatment chemicals

DTPA Chelating Agent for Water Treatment

CAS: 67-43-6

Diethylenetriaminepentaacetic acid (DTPA) is a powerful pentadentate chelating agent that forms stronger and more stable metal complexes than EDTA, particularly with iron, manganese, and heavy metals. It is widely used in industrial water treatment, pulp bleaching, and hydrogen peroxide stabilization. DTPA is preferred over EDTA in systems with elevated transition metal ion concentrations.

water treatment chemicals

Defoamer for Water Treatment

CAS: 8050-09-7

Water treatment defoamers are specially formulated silicone or non-silicone emulsions designed to rapidly break foam and prevent its re-formation in wastewater treatment plants, cooling towers, and industrial water systems. They work by destabilizing foam lamellae and spreading rapidly at the air-liquid interface. These products are compatible with most water treatment programs and are effective at very low dosages.

water treatment chemicals

Dispersant for Water Treatment

CAS: 9003-04-7

Water treatment dispersants are anionic polymers used to prevent the aggregation and deposition of suspended particles, clay, silt, iron oxides, and organic matter in cooling water and industrial water systems. They maintain particles in suspension, allowing them to be removed by blowdown rather than depositing on heat exchanger surfaces. Dispersants are key components in deposit control programs for cooling towers and boilers.

water treatment chemicals

EDTA Chelating Agent for Water Treatment

CAS: 60-00-4

Ethylenediaminetetraacetic acid (EDTA) is a highly effective chelating agent used in water treatment to sequester calcium, magnesium, iron, and other metal ions, preventing scale formation and metal precipitation. In boiler and cooling water systems, EDTA softens water on-line, removes existing scale deposits, and prevents metal contamination of process streams. It is also used in membrane cleaning formulations.

water treatment chemicals

Ethylenediamine Tetramethylene Phosphonic Acid (EDTMPA)

CAS: 1429-50-1

EDTMPA is an organophosphonic acid with four phosphonate groups that provide exceptional chelation of calcium, magnesium, and transition metal ions. It is a powerful scale inhibitor and corrosion inhibitor for high-hardness industrial water systems. Its strong complexing ability also makes it effective as a metal ion stabilizer in hydrogen peroxide bleaching and textile processing.

water treatment chemicals

Filtration Aid

CAS: 61790-53-2

Filtration aids are mineral or polymeric additives used to improve the efficiency of liquid-solid separation in pressure filters, vacuum filters, and gravity filtration systems. They include diatomaceous earth (DE), perlite, and polyelectrolyte filter aids that build a permeable filter cake or precoat for faster filtration and clearer filtrate. They are widely used in drinking water, swimming pool, beverage, and industrial filtration.

water treatment chemicals

Glutaraldehyde Biocide

CAS: 111-30-8

Glutaraldehyde is a non-oxidizing broad-spectrum biocide effective against bacteria, fungi, sulfate-reducing bacteria (SRB), and biofilm-forming organisms in industrial water systems. It works by cross-linking proteins in microbial cells, leading to rapid cell death. Glutaraldehyde is widely used in oilfield water treatment, cooling systems, and paper mill operations.

water treatment chemicals

Heavy Metal Precipitant

CAS: 1313-82-2

Heavy metal precipitants are chemical agents used in industrial wastewater treatment to selectively remove dissolved heavy metals such as copper, zinc, nickel, lead, cadmium, and chromium by precipitation as insoluble hydroxides, sulfides, or chelate complexes. They enable compliance with discharge limits for heavy metal ions. Products include sodium sulfide, trimercaptotriazine (TMT), and dithiocarbamate-based reagents.

water treatment chemicals

Hydrazine Oxygen Scavenger

CAS: 302-01-2

Hydrazine is a highly effective chemical oxygen scavenger used in high-pressure boiler systems where sodium sulfite is unsuitable due to the generation of dissolved solids at steam conditions. It reacts with dissolved oxygen to produce only water and nitrogen, leaving no ionic by-products. Hydrazine also passivates boiler metal surfaces, providing additional corrosion protection.

water treatment chemicals

Industrial Wastewater Treatment Chemical

Industrial wastewater treatment chemicals are comprehensive specialty chemical solutions used to remove suspended solids, organic pollutants, heavy metals, nutrients, and other contaminants from industrial effluents before discharge. They include coagulants, flocculants, pH adjusters, oxidants, and precipitants formulated for specific industrial wastewater types. These products help industries meet environmental discharge standards.

water treatment chemicals

Isothiazolinone Biocide for Water Treatment

CAS: 55965-84-9

Isothiazolinone-based biocides (CMIT/MIT blend) are broad-spectrum antimicrobial agents widely used in cooling water, industrial process water, and paper mill water treatment. They are effective against bacteria, algae, and fungi at low concentrations and are compatible with most water treatment chemicals. This product controls biofilm formation and prevents microbiologically influenced corrosion (MIC).

water treatment chemicals

Microbiological Control Agent for Water Treatment

CAS: 55965-84-9

Microbiological control agents for water treatment are specialty biocide blends formulated to provide continuous protection against bacteria, fungi, algae, and biofilm in industrial water systems. They combine oxidizing and non-oxidizing biocides to deliver broad-spectrum efficacy while minimizing resistance development. These products are essential for preventing Legionella, SRB-induced corrosion, and biofouling.

water treatment chemicals

Nitrilotriacetic Acid (NTA) Sequestrant

CAS: 139-13-9

Nitrilotriacetic acid (NTA) is a trisodium or free acid chelating agent used as a sequestrant and scale inhibitor in industrial water treatment, detergent formulations, and pulp bleaching. It chelates calcium, magnesium, iron, and other metal ions, preventing scale formation and improving detergent performance. NTA is a more biodegradable alternative to EDTA in certain applications.

water treatment chemicals

Nonionic Polyacrylamide (NPAM)

CAS: 9003-05-8

Nonionic polyacrylamide is a high-molecular-weight polymer that carries no ionic charge, making it effective in high-salt or extreme-pH environments where ionic flocculants may underperform. It acts primarily through bridging mechanisms to aggregate suspended solids. This product is widely used in mining, coal washing, and neutral to acidic wastewater treatment.

water treatment chemicals

Oil-Water Separator Chemical

CAS: 9002-89-5

Oil-water separator chemicals are demulsifiers and coagulants used to break stable oil-in-water and water-in-oil emulsions in industrial wastewater treatment systems. They destabilize the emulsion, coalesce dispersed oil droplets, and facilitate separation by gravity or dissolved air flotation. These products are essential in refineries, metal processing, food industry, and oilfield produced water treatment.

water treatment chemicals

Phosphino Carboxylic Acid (PCA)

CAS: 71050-62-9

Phosphino carboxylic acid is a low-molecular-weight copolymer combining phosphino and carboxylic acid functional groups, providing excellent scale inhibition and dispersion in high-hardness, high-temperature, and high-pH cooling water and boiler systems. It demonstrates superior threshold inhibition of calcium carbonate, calcium sulfate, and calcium phosphate compared to conventional polycarboxylates. PCA is a key component in non-phosphonate, environmentally progressive water treatment formulations.

water treatment chemicals

Poly(diallyldimethylammonium chloride) (polyDADMAC)

CAS: 26062-79-3

PolyDADMAC is a linear, fully water-soluble cationic polymer widely used as a primary coagulant and charge-neutralization agent in drinking water, wastewater, and paper manufacturing. It provides excellent removal of humic substances, turbidity, and negatively charged contaminants. PolyDADMAC is commonly used in combination with inorganic coagulants to reduce metal salt dosage and improve sludge management.

water treatment chemicals

Polyacrylic Acid (PAA) for Water Treatment

CAS: 9003-01-4

Polyacrylic acid is a low-molecular-weight anionic polymer used as a scale inhibitor and dispersant in cooling water, boiler water, and industrial water systems. It prevents the formation and deposition of calcium carbonate, calcium sulfate, and other mineral scales on heat exchange surfaces. PAA is compatible with oxidizing biocides and other water treatment chemicals.

water treatment chemicals

Polyaluminum Chloride (PAC)

CAS: 1327-41-9

Polyaluminum chloride is a widely used inorganic coagulant for drinking water, municipal wastewater, and industrial effluent treatment. It destabilizes colloidal particles through charge neutralization and sweep flocculation, producing large, dense flocs that settle rapidly. PAC is effective over a broad pH range and produces less sludge volume than conventional alum.

water treatment chemicals

Polyamine Flocculant

CAS: 26590-05-6

Polyamine flocculants are high-charge-density cationic polymers used as primary coagulants and coagulant aids in water and wastewater treatment. They are highly effective for charge neutralization of negatively charged colloids, organic matter, and color removal. Polyamines are used at lower dosages than inorganic coagulants and generate significantly less sludge.

water treatment chemicals

Polyaspartate Scale Inhibitor

CAS: 181828-06-8

Polyaspartate (PASP sodium salt) is the neutralized, water-soluble form of polyaspartic acid used as a biodegradable scale inhibitor and dispersant in industrial water treatment. It effectively inhibits calcium carbonate, calcium sulfate, and barium sulfate scale formation and disperses iron oxide and clay deposits. As a readily biodegradable polymer, it is preferred in environmentally sensitive applications over conventional phosphonate and polyacrylate inhibitors.

water treatment chemicals

Polyaspartic Acid (PASP)

CAS: 181828-06-8

Polyaspartic acid is a biodegradable, environmentally friendly scale and corrosion inhibitor derived from aspartic acid. It provides excellent inhibition of calcium carbonate, calcium sulfate, barium sulfate, and calcium phosphate scales in industrial water systems. PASP is recognized as a green chemistry alternative to phosphonate-based scale inhibitors.

water treatment chemicals

Polyferric Chloride (PFC)

CAS: 10294-56-1

Polyferric chloride is an inorganic iron-based coagulant used for turbidity removal, phosphorus removal, and organic matter reduction in water and wastewater treatment. It produces robust flocs that capture fine particles and colloids effectively, even in cold or low-turbidity waters. PFC is particularly effective for phosphorus removal in municipal and industrial wastewater systems.

water treatment chemicals

Polymaleic Acid (HPMA)

CAS: 26099-09-2

Hydrolyzed polymaleic acid (HPMA) is a low-molecular-weight polymer excellent at inhibiting calcium carbonate, calcium sulfate, and calcium phosphate scales in high-temperature and high-hardness water systems. It exhibits superior thermal stability compared to polyacrylic acid, making it ideal for high-temperature boiler and process water applications. HPMA also acts as a dispersant for iron and other metal oxides.

water treatment chemicals

Quaternary Ammonium Biocide for Water Treatment

CAS: 68424-85-1

Quaternary ammonium compounds (quats) are cationic surfactant biocides widely used in cooling water and industrial water treatment for bacteria and algae control. They disrupt microbial cell membranes, causing rapid cell death, and also disperse biofilms. Quats have the added benefit of reducing surface tension, aiding in deposit removal and equipment cleaning.

water treatment chemicals

RO/NF Membrane Cleaning Agent

RO and NF membrane cleaning agents are specially formulated blends of acids, alkalis, surfactants, and chelating agents used to restore membrane performance after fouling by scale, biofilm, organic matter, and colloidal deposits. They are available in acidic grades for mineral scale removal and alkaline grades for organic and biological fouling removal. Proper membrane cleaning restores flux and salt rejection to near-original specifications.

water treatment chemicals

Reverse Osmosis Antiscalant

CAS: 2809-21-4

Reverse osmosis antiscalants are specialty chemical formulations dosed into RO system feed water to prevent mineral scaling on membrane surfaces. They inhibit the crystallization and precipitation of sparingly soluble salts including calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, and silica. Proper antiscalant dosing maximizes recovery, extends membrane life, and reduces cleaning frequency.

water treatment chemicals

Sludge Conditioner

CAS: 9003-05-8

Sludge conditioners are polymer-based chemical additives used to improve the dewaterability of municipal and industrial sludges on belt filter presses, centrifuges, and vacuum filters. They neutralize the charge on sludge particles, promoting floc formation and releasing interstitial water for more efficient dewatering. Proper sludge conditioning reduces final cake moisture and disposal costs.

water treatment chemicals

Sodium Hydroxide (Caustic Soda) pH Adjuster

CAS: 1310-73-2

Sodium hydroxide is the primary alkaline pH adjustment chemical used in water and wastewater treatment to raise pH, neutralize acidic effluents, precipitate heavy metals, and maintain optimal conditions for coagulation and flocculation. It is supplied as solid flakes/pearls or as 50% aqueous solution for direct dosing. Proper pH control is essential for effective coagulation, scale inhibition, and compliance with discharge pH limits.

water treatment chemicals

Sodium Molybdate Corrosion Inhibitor

CAS: 10102-40-6

Sodium molybdate is an environmentally acceptable, non-toxic anodic corrosion inhibitor for steel, aluminum, and other metals in closed-loop cooling and heating water systems. It passivates metal surfaces by forming stable molybdate complexes that impede anodic dissolution. Molybdate is especially favored in non-chromate replacement programs due to its low toxicity and compatibility with diverse system materials.

water treatment chemicals

Sodium Sulfite Oxygen Scavenger

CAS: 7757-83-7

Sodium sulfite is a chemical oxygen scavenger widely used in boiler water and steam systems to remove dissolved oxygen and prevent oxygen-induced corrosion. It reacts rapidly with dissolved oxygen to form non-corrosive sodium sulfate. Sodium sulfite is the most cost-effective oxygen scavenger for low- to medium-pressure boiler systems operating below 60 bar.

water treatment chemicals

Sulfuric Acid pH Adjuster for Water Treatment

CAS: 7664-93-9

Sulfuric acid is the most widely used acidic pH adjustment chemical in water and wastewater treatment, RO system pretreatment, and cooling water systems. It lowers pH, reduces alkalinity, controls calcium carbonate scale in RO membranes, and neutralizes alkaline effluents. It is used in diluted form for safe handling and accurate dosing by metering pumps.

water treatment chemicals

Swimming Pool Water Treatment Chemical

CAS: 87-90-1

Swimming pool water treatment chemicals include chlorine-based disinfectants (trichloroisocyanuric acid, sodium dichloroisocyanurate), pH adjusters, algaecides, and clarifiers used to maintain safe, clear, and hygienically controlled pool water. They control bacteria, algae, and other pathogens while maintaining optimal water balance for swimmer comfort. These products meet international pool water quality standards.

water treatment chemicals

Zinc Salt Corrosion Inhibitor

CAS: 7446-20-0

Zinc sulfate and zinc chloride are cathodic-type corrosion inhibitors widely used in cooling water programs to protect carbon steel and other metals. Zinc ions precipitate as zinc hydroxide at cathodic sites on metal surfaces, forming a protective barrier against oxygen corrosion. Zinc salts are highly effective when combined with anodic inhibitors such as phosphonates and azoles.