water treatment specialty chemicals

Hydrazine Oxygen Scavenger for High-Pressure Boilers

CAS: 302-01-2

Hydrazine (N2H4) is a volatile oxygen scavenger and metal passivator used in high-pressure steam boilers and power plant steam-water circuits. It reacts stoichiometrically with dissolved oxygen to produce nitrogen and water with no solid residuals, and simultaneously passivates iron and copper oxide surfaces to form a dense protective magnetite layer. Supplied as 35% or 64% aqueous solution.

water treatment specialty chemicals

Maleic Acid/Acrylic Acid Copolymer Scale Inhibitor (MA/AA)

CAS: 26099-09-2

Maleic acid/acrylic acid (MA/AA) copolymer is a multifunctional scale inhibitor and dispersant widely used in cooling water and boiler systems. It inhibits crystallization of calcium carbonate, calcium sulfate, and calcium phosphate scales through threshold effect and crystal distortion mechanisms. Also functions as a dispersant for suspended particles.

water treatment specialty chemicals

Manganese Sand Filter Media (Iron & Manganese Removal)

CAS: 1313-13-9

Manganese sand (natural pyrolusite-coated quartz, MnO₂ ≥35%) is the catalytic filter media for iron and manganese removal from groundwater, well water, and surface water. The MnO₂ coating catalyzes oxidation of dissolved Fe²⁺ and Mn²⁺ to insoluble Fe(OH)₃ and MnO₂ which are then captured in the bed. Mined from Pingdingshan (Henan) and Guangxi deposits, grades vary by MnO₂ content (≥35%, ≥45%) and mesh size.

water treatment specialty chemicals

Methanol Carbon Source for Denitrification

CAS: 67-56-1

Technical grade methanol (CH3OH) is the most widely used external carbon source for biological denitrification in municipal and industrial wastewater treatment. Denitrifying bacteria utilize methanol as an electron donor to reduce nitrate (NO3-) and nitrite (NO2-) to nitrogen gas (N2), achieving effluent total nitrogen (TN) targets. Methanol offers high C:N efficiency and rapid bacterial uptake compared to alternative carbon sources.

water treatment specialty chemicals

Methylisothiazolinone Industrial Biocide (MIT)

CAS: 2682-20-4

Methylisothiazolinone (MIT) is a broad-spectrum industrial biocide used in cooling water, paper mill white water, and industrial process water to control bacteria, algae, and fungi. It is effective against sulfate-reducing bacteria (SRB) and acts by disrupting cellular enzyme function. Supplied as aqueous solution for easy liquid dosing.

water treatment specialty chemicals

Mixed Bed Deionization Resin (MB)

Pre-mixed or separately supplied strong acid cation (SAC) and strong base anion (SBA) resins for use in mixed bed deionizer vessels producing ultrapure and high-purity water. Mixed bed systems achieve effluent resistivity of 18 MΩ·cm (25°C) and are the final polishing step in semiconductor, pharmaceutical, and power generation water treatment. Available in standard 2:1 anion:cation ratio.

water treatment specialty chemicals

Non-Silicone Defoamer for Effluent Treatment

A mineral oil or EO/PO polymer-based non-silicone defoamer designed for wastewater and effluent treatment systems where silicone contamination is unacceptable. It provides effective foam knockdown in aeration tanks, dissolved air flotation (DAF) units, and secondary clarifiers without risking silicone carry-over to downstream processes or discharged effluent.

water treatment specialty chemicals

Nonionic Polyacrylamide Flocculant

Nonionic polyacrylamide (NPAM) flocculant suitable for clarification of weakly acidic and neutral wastewater where ionic flocculants are incompatible. Flocculation occurs purely by polymer bridging without charge effects, making it versatile across varying conductivity conditions. Commonly used in mining, ceramics, and coal washing.

water treatment specialty chemicals

Peracetic Acid Water Treatment Biocide (PAA)

CAS: 79-21-0

Peracetic acid (PAA) is a powerful oxidizing biocide and sanitizer composed of acetic acid and hydrogen peroxide equilibrium mixture. It provides rapid, broad-spectrum disinfection against bacteria, fungi, and viruses, and decomposes to harmless acetic acid and oxygen, leaving no toxic residuals. Approved for food contact surface sanitation and wastewater disinfection.

water treatment specialty chemicals

Poly-DADMAC Flocculant Aid

CAS: 26062-79-3

Poly(diallyldimethylammonium chloride) (pDADMAC) is a strongly cationic polyelectrolyte used as a primary coagulant and coagulant aid in drinking water, industrial water treatment, and paper manufacturing. Its high quaternary ammonium charge density provides excellent colloidal charge neutralization and turbidity removal, and it is effective even in cold, low-turbidity waters where inorganic coagulants perform poorly.

water treatment specialty chemicals

Polyaluminum Chloride (PAC)

CAS: 1327-41-9

Polyaluminum chloride (PAC) is a high-basicity inorganic coagulant with 30% Al2O3 content, widely used in drinking water and wastewater treatment. It forms large, dense flocs rapidly over a broad pH range and outperforms traditional alum in turbidity removal efficiency. Available as liquid or spray-dried powder.

water treatment specialty chemicals

Polyaluminum Ferric Chloride (PAFC)

Polyaluminum ferric chloride (PAFC) is a composite inorganic coagulant combining the charge neutralization of aluminum with the strong flocculation of iron species. It offers enhanced turbidity and color removal compared to single-metal coagulants, particularly effective for treating high-color surface waters and oily wastewater.

water treatment specialty chemicals

Polyaspartate Dispersant (PASP)

CAS: 94525-38-9

Polyaspartic acid (PASP) is a biodegradable, amino acid-based scale inhibitor and dispersant for cooling water and boiler systems. It inhibits calcium carbonate, calcium sulfate, and zinc phosphate scale formation while dispersing corrosion products and suspended particles. Considered a green chemistry alternative to traditional phosphonate and polyacrylate inhibitors.

water treatment specialty chemicals

Polyepoxysuccinic Acid Scale Inhibitor (PESA)

CAS: 51274-37-4

Polyepoxysuccinic acid (PESA) is a green, phosphorus-free and nitrogen-free scale inhibitor with excellent biodegradability. It is highly effective against calcium carbonate, calcium sulfate, and barium sulfate scales via threshold inhibition and crystal modification. Preferred in environmentally regulated discharge zones as a replacement for phosphonate-based inhibitors.

water treatment specialty chemicals

Polyferric Sulfate (PFS)

CAS: 10028-22-5

Polyferric sulfate (PFS) is a high-performance iron-based coagulant offering excellent turbidity, color, and phosphorus removal in drinking water and industrial wastewater applications. Its high charge density and hydrolysis products create stable, rapidly settling flocs even at low temperatures. Supplied as reddish-brown liquid or solid.

water treatment specialty chemicals

Quartz Sand Filter Media

CAS: 14808-60-7

Quartz sand filter media (SiO₂ ≥99%) is the standard primary filtration layer in dual-media and multi-media gravity/pressure filters. Round-grained silica particles classified to specific mesh ranges (16-30, 8-16, 4-8) trap suspended solids by mechanical straining plus interstitial adhesion. Pingdingshan and Lingshou (Hebei) deposits supply the bulk of Chinese export grade — chemically inert, abrasion-resistant, NSF/ANSI 61 compliant for drinking water.

water treatment specialty chemicals

Quaternary Ammonium Compound Water Biocide (BAC)

CAS: 8001-54-5

Benzalkonium chloride (BAC) and blended quaternary ammonium compounds (QACs) are non-oxidizing cationic surfactant biocides effective against a wide range of bacteria, algae, and fungi in water treatment systems. They act by disrupting microbial cell membranes and are used as both algaecides and bactericides in cooling towers, potable water, and industrial systems.

water treatment specialty chemicals

RO Membrane Antifouling Surfactant

A specialty non-ionic or amphoteric surfactant blend formulated as a continuous-dose antifoulant for reverse osmosis membrane systems. It reduces organic, biological, and colloidal fouling by modifying the membrane surface hydrophilicity and preventing foulant adhesion. Used as a low-dose additive in RO feed water to extend cleaning intervals and maintain normalized permeate flux.

water treatment specialty chemicals

Reverse Osmosis Membrane Antiscalant

Specifically formulated polymeric antiscalant for reverse osmosis (RO) and nanofiltration (NF) membranes, preventing calcium carbonate, calcium sulfate, silica, barium sulfate, and strontium sulfate scaling in concentrate streams. Enables higher system recovery rates while extending membrane cleaning intervals. Compatible with all commercial thin-film composite membranes.

water treatment specialty chemicals

Silicone Defoamer for Cooling Water (PDMS)

CAS: 9006-65-9

Polydimethylsiloxane (PDMS)-based silicone defoamer emulsion formulated for cooling tower and industrial water treatment applications. Provides fast knockdown and persistent foam suppression at very low dosages. The silicone active spreads rapidly across foam bubbles, reducing surface tension and causing rapid film rupture. Compatible with most cooling water treatment programs.

water treatment specialty chemicals

Sludge Dewatering Conditioner Polymer

A high molecular weight cationic polyacrylamide emulsion or powder specifically engineered for sludge conditioning prior to mechanical dewatering on belt filter presses, centrifuges, and screw presses. Optimized charge density and molecular weight distributions are selected to match specific sludge types (municipal, industrial, anaerobically digested) for maximum cake dryness and minimum filtrate turbidity.

water treatment specialty chemicals

Sodium Aluminate Coagulant

CAS: 1302-42-7

Sodium aluminate (NaAlO2) is an alkaline coagulant that simultaneously provides coagulation and pH correction, making it valuable for treating acidic wastewaters and low-alkalinity source waters. It generates aluminum hydroxide flocs under alkaline conditions and is particularly effective for color and NOM removal in soft waters.

water treatment specialty chemicals

Sodium Bisulfite Oxygen Scavenger

CAS: 7631-90-5

Sodium bisulfite (NaHSO3) is a cost-effective chemical oxygen scavenger used in boiler feedwater, hot water systems, and reverse osmosis membrane pre-treatment for dechlorination. It rapidly reacts with dissolved oxygen to prevent corrosion in boiler circuits. In RO applications, it neutralizes residual chlorine to protect thin-film composite membranes from oxidative damage.

water treatment specialty chemicals

Sodium Chloride Ion Exchange Regenerant

CAS: 7647-14-5

High-purity sodium chloride (NaCl) in granular or tablet form specifically graded for softener and ion exchange resin regeneration. The brine solution produced regenerates exhausted sodium-cycle softener resin by displacing accumulated calcium and magnesium ions, restoring full exchange capacity. Low impurity levels prevent resin fouling and maintain long resin service life.