Nalco PermaTreat PC-191 Highly Effective RO Membrane Antiscalant – ChemEqual

Reverse osmosis is a water purification technique developed in 1950’s by US government to remove dissolved solids in saline and brackish water. The principle involves application of waterline pressure over untreated water against a semipermeable membrane. The separated H₂O molecules pass through the membrane into a reservoir while contaminants remain on the other side. Over the years, RO has been extensively used for treating industrial feed water. While the primary method for demineralization is Ion exchange method, RO systems are adopted when large volumes of water need to be treated economically.

The life, efficiency & productivity of an RO Membrane water treatment system is greatly reduced due to a phenomenon called RO Membrane Scaling. During RO system operation, as the water moves through the membrane, the concentration of dissolved and suspended solids keep on increasing at the boundary layer. When the concentration exceeds saturation value, there occurs a tendency of deposition and crystallization on the membrane surface. Smaller depositions act as nuclei for more salt accumulation thus decreasing effectiveness of membranes and invoking frequent cleaning of the system. Scalants mostly include low soluble salts of calcium, barium, strontium as carbonates and sulfates and fine reactive silica crystals. Their low solubility makes them difficult to remove during cleanup processes.

Scaling can be minimized by pretreatment processes like ion exchange, chemical treatment like lime softening etc. but these incur higher costs.  In some cases, acidification is practiced to remove insoluble carbonates and sulfates and most commonly Hydrochloric Acid is used. Recently, the popular choice of RO scale treatment is the use of Antiscalants. Reverse Osmosis Antiscalants are specialized chemical formulations added to the untreated feed water to increase the solubility of sparingly soluble salts that cause scaling. They mostly comprise of acrylates and phosphonates that greatly inhibit carbonate and sulfate precipitation. Since they offer an online scale protection advantage, RO Antiscalants have become an essential part of operations involving reverse osmosis systems. Such systems avoid mineral scaling and need less frequent cleaning, show greater efficacy with high permeate quality, decreased water and energy consumptions and longer operation life.

Nalco PermaTreat PC-191 is an RO Membrane Antiscalant manufactured by Nalco Company. It is a highly effective scale inhibitor engineered specifically for RO systems. It is suitable for treating brackish, highly saline and effluent feed water in RO filtration, Nanofiltration and Ultrafiltration systems. It is compatible with all types of RO membranes and can extend membrane life thus cutting down operating and maintenance costs.

Nalco PermaTreat PC-191’s characteristics can be ideally summarized as:

• Effective against scales of calcium, strontium, barium salts of carbonate, sulfate and oxide origin
• Zero scaling in system upto 2.6 LSI
• Cleans by dispersing particulate fouling
• Effective even at low feed water pH upto 5.9
• Can be fed directly or as diluted solution in system
• Prevents formation of Iron scales

Nalco PermaTreat PC-191 helps resolve all scaling issues in RO Filtration systems and at all instances, the costs incurred are lower than would be for Ion exchange hardness removal methods.  ChemEqual is the most trusted speciality chemical global marketplace based in USA with over 700+manufacturers and 30K products listed. Search for required Speciality Chemical products and its suppliers, manufacturers or its equivalent
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RODINE 213 Acid inhibitor Supplier Exporter – ChemEqual

Most metal hot working processes tend to leave a discoloring oxide layer or scale on the surface. Deposition of inorganic impurities, stains, rust and scales from ferrous, cuprous, aluminium and precious metal mostly as oxides hinder with further processes like extrusion, rolling and galvanizing. In jewellery making, soldering and annealing processes leave metal oxide residue that prevent polishing of ornaments. Such impurities are cleaned with the help of diluted solution of acids. The method is called pickling and the work piece is dipped in a vat of acid solution popularly called “Pickle Liquor”.

Hydrochloric acid replaced the commonly used Sulfuric acid as the pickling liquor because it pickles much faster with minimum base metal loss. The aggressive chloride ion in the acid is the key to high efficiency in the cleaning process. It is used for cleaning metals with an alloy content of 6% or less. An acid inhibitor must be added to the pickling solution to prevent the metal from dissolving or becoming pitted. Such a pickling acid solution is called “Inhibited HCL” and is a blend of Hydrochloric acid solution in water (3% to 10%) and an acid corrosion inhibitor which in itself is a blend of organic compounds that adsorb on the metal surface during pickling.

Rodine 213 is a premium organic blend of keto-amine complex substitutes with non-ionic surfactants, alcohol and solvents especially designed to inhibit attack of hydrochloric acid on metal surfaces during industrial operations like cleaning and pickling. It is effective over a wide range of metal surfaces like Iron & Steel, copper and brass. Rodine 213 is a high foaming formulation with a high efficacy at dispersing grease deposits and is ideal for HCL based pickling liquor solutions especially prior to plating.

It ensures metal surface protection during processes involving elimination of lime deposits from boiler and pipework and from evaporating plants, removal of oxide deposits from iron, steel, brass and copper. Rodine 213 is free from chlorinated hydrocarbons and heavy metals like arsenic and lead. It can be synergized with Hydrochloric acid pickling in stipulated concentrations both by circulation method and by soak and rinse method. Rodine 213’s exceptional strength and commendable heat stability makes it an ideal acid inhibitor during enhancement of the pickling process by pre-heating the equipment with the inhibited acid solution. It also acts as a strong acid fume suppressant.

Its key features can be summarized as follows:

• Modifies  metal surface to prevent corrosion
• Easy to use
• Excellent wetting properties for better cleaning
• Effective fume suppression
• Saves Zinc in galvanizing (Plating)
• Reduces metal loss
• Enriches strength of pickling acid bath, and reduces acid consumption

Rodine 213 has widespread industrial application in industries such as Iron & Steel, Power Station, Heavy Engineering Industries, Petrochemical & Refineries, Sugar Processing Industry, Cement, Glass & Ceramic Industries to name a few. ChemEqual is the most trusted speciality chemical global marketplace based in USA with over 700+manufacturers and 30K products listed. Search for required Speciality Chemical products and its suppliers, manufacturers or its equivalent
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NALCOOL 2000 Nitrite based Diesel Engine Corrosion & Scale Inhibitor – ChemEqual

Tropical coolants are water based need coolant additives for mineral salt suppression that may negatively affect heat transfer operations and corrode/scale inner walls of cooling systems. The Cooling System is itself a very aggressive environment and is subjected to a small volume of coolant that is propelled through the system at very high velocity at extremes of temperatures that can easily cause scaling and corrosion to metal components leading to equipment failure at any time.

NALCOOL 2000 manufactured by NALCO is a coolant corrosion inhibitor blend made from Sodium Nitrite, Sodium Tetraborate, Sodium Metasilicate, Sodium Mercaptobenzothiazole that functions as a protective, film-forming corrosion inhibitor and scale suppressant to keep engines clean and free from scale, and reduces downtime and maintenance costs. The product protects cooling systems against corrosion, liner pitting, cavitation-erosion, mineral scale deposits and electrolysis. In addition, it helps reduce the effect of oxidizing agents that are commonly dissolved in most tropical coolants.

It has been designed for all common engine cooling systems and is ideal to protect ferrous metals, copper & its alloys, aluminium etc. as well as rubber gaskets, ‘O’rings and non-metallic components within the cooling system. NALCOOL 2000 is available in liquid form making it easy to use and apply, fully compatible with water based coolants and Mono Ethylene Glycol antifreeze. It is chromate free and has been tested internationally to maintain a high degree of heat transfer efficiency & long engine life.

Product Features & Benefits:

• Designed to protect cast iron diesel engine cooling systems
• Contains additives to protect against sludge and mineral scale formation
• Prevents overheating
• Effective against liner pitting and cavitation erosion
• Liquid, safe & easy to apply formulation
• Not harmful to radiator or heater connecting hoses, diesel liner seals and ‘O’rings
• Recommended and used by major diesel engine manufacturers throughout the world

NALFLEET NALCOOL 2000 is the perfect corrosion & scale inhibitor for all types of heat transfer fluids in small auxiliary diesel engines containing aluminium components.

ChemEqual is a vast online specialty chemical database and NALCOOL 2000 and equivalent compositions of coolant corrosion inhibitors can be searched here from among a wide range of global suppliers.

Metal Passivation using Rodine 85 for Sulfuric Acid Pickling – ChemEqual

Derusting and descaling operations on industrial metal components require the use of strong mineral acids like sulfuric acid to maintain surface quality. It employs the use of acid baths for oxidative removal of alkali scales and mineral oxide deposits. But mineral acids have a tendency to corrode metal surfaces as well rendering them distorted by formation of pits and loss of base metal.

To retard the corrosive nature of acids, the pickling liquor used in acid vats is primarily composed of a pickling acid such as sulfuric acid mixed with an acid corrosion inhibitor. These inhibitors do not reduce the efficiency of the liquor but tend to passivates the base metal surface preventing pitting and corrosion. These passivating chemicals greatly reduce maintenance costs and extend equipment life while optimizing acid utilization and quick operations.

Rodine 85 is a low foaming soluble liquid corrosion inhibitor specifically designed for acid baths that use sulfuric acid as the pickling reagent. It is a synergistic organic blend of 1,3-Diethyl Thiourea, Formaldehyde, substituted Triazine & O-Toluidine, Propargyl Alcohol and detergent that is effective on a wide range of metal surfaces and can be ideally dozed over a wide range of acid concentrations. . Rodine 85 serves as an effective inhibitor for phosphoric and acetic acids, as well as sulfamic, citric, oxalic, and sodium bisulfate solutions in pickling and industrial cleaning operations.

It is recommended that dosage of Rodine 85 to be used for pickling should always be in percent by volume of the concentrated acid, regardless of the degree of acid dilution used. Ideal concentration ranges from 0.05 to 0.30 percent by volume of the diluted acid. In addition, it is also recommended that Rodine 85 inhibitor be used at a concentration not less that 0.5% by volume of the concentrated liquid acid or not less that 0.5% by weight of the concentrated solid acid, regardless of the temperature of the industrial cleaning operation.

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