Chemtex Speciality Limited
Tangra, Chennai, Tamil Nadu
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Metal Treatment Chemicals

Our range of products include phosphating chemical, metal finishing chemicals, metal surface treatment chemicals, surface treatment chemical, rust preventing chemical and corrosion remover.

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Phosphating can be regarded as a process of coating a ferrous metal surface with a passive phosphate coating for the prevention of rusting of metal. Phosphating are primarily of two types:-

Iron Phosphating - Blackish Color Coating
Zinc Phosphating - Whitish Color Coating

Chemtex Speciality Limited manufactured product Phosphating Chemicals are used to perform three functions:
Degreasing
Derusting
Phosphating

The Phosphating Chemical for mild steel (crc sheets), cast iron are especially formulated for removal of oil, grease, rust and simultaneously for producing a thin iron phosphate or zinc phosphate coating on the metal surface to avoid further corrosion or rusting.

Chemtex offered product Phosphating Chemical can effectively be used as line deruster and in-process cleaner prior to painting or any other similar metal treatment operations.

Key Features and Benefits
Self Curing
Acts effectively at room temperature
Extends the life of metal
Economical and is environmental friendly
Easy to apply
Prevents corrosion of metal
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Chemtex’s Metal Finishing Chemicals consist of a whole range of Pickling Inhibitors and Metal Phosphating.
Acid Pickling Inhibitor is a strong foaming inhibitor for use batch pickling method for all kinds of steel and alloys at any concentration.
Key Features and Benefits
• Modifies metal surface to prevent corrosion
• Excellent wetting properties for better cleaning
• Easy to dose
Phosphating is a process to coat ferrous metal surfaces with a passive phosphate coating to prevent rusting of metal. They are of two main types:
Iron Phosphating: Blackish Color Coating
Zinc Phosphating: Whitish Color Coating
CHEMTEX'S Phosphating Chemicals perform three main functions:
Degreasing, De-rusting, Phosphating
The Phosphating Chemical For Mild Steel (CRC Sheets), Cast Iron Are Especially Formulated For Removal of Oil, Grease, Rust And Simultaneously To Produce A Thin Iron Phosphate Or Zinc Phosphate Coating On The Metal Surface To Avoid Further Corrosion Or Rusting.
CHEMTEX'S Phosphating Can Effectively Be Used As Line Deruster And In Process Cleaner Prior To Painting Or Any Other Similar Metal Treatment Operations.
Key Features and Benefits
• Self curing
• Extends life of metals
• Economical and cost effective
• Environmental Friendly
• Easy To Apply
• Prevents surface corrosion
• Safe to handle
• Removes Corrosion Products
• Single Component
• Improves quality
• Ready to Use
• Acts Effectively At Room Temperature
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Metal Surface Treatment Chemicals can be of vital significance in numerous commercial enterprises. Today there can be a few reasons why it is important to change the surface properties of metals. For instance is surface treatment of metals utilized for:
• Beautification
• Enhanced hardness (eg. for imperviousness to wear and tear)
• Anti Corrosion
• Expanding life of metals
There are a few sorts of surface treatment as a part of the surface treatment process.
• Covering with Oxides: Coatings done by the assistance of oxides are generally corrosion products. These treatments are typically done through electrochemical reactions, heat, or chemicals.
• Chromate Covering: Chromate coatings can be connected on cadmium, zinc, magnesium and aluminum as a result of their resistance towards climatic consumption. These coatings are widely utilized for protecting household items.
• Phosphate Covering: Generally, phosphate coatings are connected on cast iron, low-combination steel and carbon steel. However, it can be coated on cadmium, tin, aluminum and zinc as well.
Chemtex manufactures a wide range of Metal Surface Treatment Chemicals that modifies the metal surface for better surface finish such as derusting, phosphating and passivation. Various procedures are there for the metal surface treatment. Metal surface treatment involving Metal Surface Treatment Chemicals, is a process where metal parts to be painted are prepared. Coatings Pretreatment is the name commonly referred for preparation. The preparation involves creating a barrier for protecting the metal against corrosive environment. For creating a proper metal surface treatment, the Metal Surface Treatment Chemicals or film must impart equal potential to the surface and neutralize the possible anodic and cathodic corrosion areas so that it can provide an absorptive base for adhesion to finishes, like paints.
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Surfactants are so-called surface-active substances, as they reduce the surface tension of liquids due to adsorption at the surface. Surfactants are categorized according to the nature of the hydrophilic group:
• Anionic surfactants, carboxylates or sulphonates often in the form of alkaline metal salts
• Cationic surfactants like quaternary amines
• Ampholytic surfactants, frequently carboxylate and quaternary amine group
• Non-ionic surfactants like Alcohol, ether or ethoxylate.
Surface Treatment of metals can be of vital significance in numerous commercial enterprises. Today there can be a few reasons why it is important to change the surface properties of metals. For instance is surface treatment of metals utilized for:
• Beautification
• Enhanced hardness (eg. for imperviousness to wear and tear)
• Anti Corrosion
• Expanding life of metals
 Chemtex manufactures a wide range of Surface treatment chemicals that modifies the metal surface for better surface finish such as derusting, phosphating and passivation. Various procedures are there for the metal surface treatment. Metal surface treatment involving Metal Surface Treatment Chemicals, is a process where metal parts to be painted are prepared. Coatings Pretreatment is the name commonly referred for preparation. The preparation involves creating a barrier for protecting the metal against corrosive environment. For creating a proper metal surface treatment, the Metal Surface Treatment Chemicals or film must impart equal potential to the surface and neutralize the possible anodic and cathodic corrosion areas so that it can provide an absorptive base for adhesion to finishes, like paints.
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Prevention of rust is the counteractive action or defer of rusting of iron and steel objects, or the lasting assurance against erosion. Depending upon mechanical and environmental conditions, the degradation may not be stopped completely, unless the process is periodically repeated. The term is especially utilized as a part of the vehicles business.
Chemtex Speciality Limited is involved in manufacturing a range of rust preventive compounds that control the rusting of metals in various industries. Rust Preventing Chemical serves as an effective product that prevents the infiltration of rust promoting nuclei into the metal components. This oil forms an effective barrier on the metal surface, between the metal surface and the atmosphere.
Rust Preventive Oil can be applied by dip, brush or spray. It is mostly used in places where corrosion inhibition is required before use.
Benefits of Rust Preventing Chemical:
• Self curing and extends the life of metals
• Nontoxic and environment friendly
• Ready to use and easy to apply
• Provides excellent lubrication
• Acts effectively at room temperatures
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Chemtex’s Derusting range of chemicals that removes rusting of metals in various industries. Our range of water based and biodegradable derusting compounds prove highly efficient even at room temperature.
Chemtex’s Corrosion Remover effectively removes rust from Iron, Steel and most painted surfaces. It contains acids, surfactant emulsifiers and metal corrosion inhibitors that help remove rust quickly and effectively without corroding metal surface.
Key Features and Benefits
• Active Agent For Rust Remover Process
• Rinses Freely From Treated Surfaces
• Contains Emulsifiers
• Prevents Acid Rusting
• Does Not Corrode Base Metal
• No Effect With Wood, And Painted/Film On The Surface
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Chemtex's Pickling Inhibitor is an acidic mix of exclusive corrosion inhibitors, and other tailored chemicals dealing specifically with the acids involved, and other surfactants.
Pickling Inhibitor is intended to repress the corrosive acid attacks on steel, copper and other composites in industrial cleaning and other corrosive pickling operations. It is much low on danger yet extremely compelling in consumption restraint properties with above 99% hindrance on the majority of the ferrous metals.
Key Components and Advantages
• Modifies metal surface to treat erosion
• Excellent wetting properties for faster and more efficient cleaning
• Easy to dose and handle
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Pickling is a metal surface treatment used to evacuate impurities, like stains, inorganic contaminants, rust or scale from ferrous metals, copper, valuable metals and aluminum composites. It is usually used to descale or clean steel in different steel making processes. It efficiently removes welding spots and oxide layer from stainless steel.

Chemtex Speciality Limited is an ISO 9001, ISO 14001 and OHSAS 18001 certified company that specializes in the manufacturing of pickling paste products. It has also established itself to be among world's renowned multipurpose chemical exporter having its facility in India. Chemtex's greatest business vitality and strength are its technical and manufacturing knowledge and a well developed technical service team.

Pickling helps in removing a thin surface layer from the stainless by using an acid solution, which is usually a hydrofluoric and nitric acid mixture.

Pickling of metals will evacuate embedded iron deposits, heat tin and weld scale. It has quality to expel free iron sullying from the stainless steel surfaces all alone, significantly utilized as a part of steel industry.
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CHEMTEX'S Passivation Chemical is an unique passivating agent for closed loop systems. It plays a vital role in keeping the closed loop system operating efficiently. It effectively removes foulants such as dirt, solder deposits, corrosion products, water derived mineral deposits, grease, oil films or foulants etc.
Passivation With CHEMTEX'S Passivation Chemical creates a light coat of a protective material, such as metal oxide, on the system metal that ensure optimum system performance, by reducing the chances of metal oxidation or corrosion (rusting), and retains the heat transfer efficiency close to design.
Key Features and Benefits
• Effective cleaning and removal of foulants with ease.
• Promotes power saving by improving heat transfer in the chiller.
• Modifies metal surface for corrosion protection.
• Removes foreign metal contaminants to prevent bi-metallic corrosion cell.
• Inhibits flash rusting after descaling.
• Retains brine or water properties and characteristics for a longer period.
• Biodegradable and easy to dispose.
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Chemtex Speciality Limited manufactured product Pickling Paste serves as a special formulation that has been designed to bring about the pickling of stainless steel surface. When administered, this product helps in the efficient removal of welding spots and oxide layer from stainless steel.

Key Features and Benefits
Effectively cleans and removes welding spots from stainless steel
Gel helps to adhere to vertical surfaces
Easy to apply and handle
Improves surface finish and glaze
Removes scale, black oxides and discoloration from stainless steel surface
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The Pickling and Passivation Chemicals are used for preventing corrosion to components made of stainless steel and as a result considerably influences in improving their life and productivity. Pickling helps in removing a thin surface layer from the stainless by using an acid solution, which is usually a hydrofluoric and nitric acid mixture.

In addition, pickling will remove embedded iron, heat tin and weld scale. Whereas passivation is involving nitric acid in the solution, which can take place both in successions and simultaneously. Nitric acid is a strong oxidizing agent used for chemical passivation. It has the required strength to remove free iron from the stainless steel surfaces on its own, majorly used in steel industry. The products which we cater under this category are Pickling Paste, Passivation Gel, Stainless Steel Welding Spot Removing Paste, Acid Neutralizing and Passivating Chemical and Water or Brine System Cleaning & Passivating Agent.
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Polishing and buffing are the last process for smoothing metal surface using abrasives. This procedure evacuates surface material, enhancing the surface and setting it up for buffing. This is for the most part a coarse operation including sandpaper and/or metal polishing compounds. Polishing may include expelling oxidation and enhancing quality of the metal by adding removing blurring, water soaked spots, sun spots or shadiness.
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CHEMTEX'S Liquid Cleaning Chemical is a concentrated blend of anionic surfactants and emulsifiers. It is high foaming liquid cleaner for general purpose cleaning applications in f&b, brewery, dairy, pharma and other industries. Liquid cleaning chemical is a suspension of solid abrasive particles in a thickened liquid matrix. They contain more surfactant and softer abrasives than are found in some powdered cleaners. As a result, their abrasive action is usually gentler than powders.
Key Features and Benefits
• Neutral pH cleaner
• Excellent cleaning efficiency against oil and fats
• Concentrated emulsifying detergent
• Forms rich foam for excellent cleaning of utensils, equipments, walls, floors etc
• Can be used on all metal surfaces, plastic and rubber seals
• Completely non-hazardous, safe and suitable for manual cleaning applications
• Multipurpose product
• Can be used in both soft and hard water
• Excellent rinsability
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Degreasing Chemicals serve as highly emulsifying and quickly de-emulsifying, concentrated solvent degreaser for helping in the removal of grease, tar and oil quickly and safely. Degreasing Chemicals come off as an excellent choice for cleaning heavy, ferrous and non-ferrous and light metals for cleaning of contaminants such as oil and grease that are commonly found in the manufacturing process of metal components. Degreasing Chemicals are also suited for the cleaning of car engines, oil tanks, machinery, and concrete floors and especially for off-shore applications.

Key Features and Benefits
Helps in the effective removal of grease and dirt
Exhibits properties of emulsification
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Chemtex Speciality Limited manufactured product Defoaming Agents are referred to as antifoam emulsion that has been designed to provide optimum antifoam performance combined with excellent dilution stability and foam knock down performance.

In industrial units, foaming comes off as a huge problem. They affect surface coating and prevent proper filling of containers that might reduce the process speed and process equipment availability. The Defoaming Agents, formulated by Chemtex, provide a solution to this problem by reducing and deterring the formation of foam at the time of industrial process liquids.

Key Features and Benefits
Excellent performance at very low concentrations of 10-100ppm
Stable over wide ph range
Excellent foam control persistence
Very good foam knock down performance
Easy to disperse in aqueous systems
High solid content
Very economical for bulk applications
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Chemtex manufactured product Carbon tetrachloride, also known as carbon tet in the cleaning industry, is regarded as the inorganic compound with the chemical formula CCl4. It is a colourless liquid with a sweet smell that can be detected at low levels. Carbon tetrachloride is widely used as a dry cleaning solvent, as a refrigerant, and in lava lamps. It is not flammable and does not dissolve in water very easily.

Key Features and Benefits
Excellent cleaning of oil, sludge and carbon
Compatible with R12, R22, R134a etc
Compatible with all ac components
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Chemtex's Stainless Steel Pickling Paste is an exceptional formulation for pickling of Stainless Steel surfaces. Application of the same efficiently removes welding spots and oxide layer from SS surfaces.
Key Components and Advantages
• Adequately expels welding spots from SS surfaces
• Paste form is easier to stick to vertical surfaces
• Ease of handling
• Enhances surface finish and glaze
• Removes scales, black oxides and discolouration from SS surfaces
Method of Application:
CHEMTEX'S Stainless Steel Pickling Paste is applied on the SS surface and left for a time of 30 - 60 minutes depending up on the need, after which it can be cleaned with a wire brush and washed thoroughly with water. The surface appears clean, bright and glazy after application.
ofing.
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Chemtex manufactured product Sulfamic Acid serves as a descalant that can be used for the removal of process scales and water from industrial equipments. Sulfamic Acid serves as a superior cleaner and a potential descalant. Its aqueous solution shows the tendency to be less corrosive towards metals than other mineral acids.

It appears to be odorless, non-hygroscopic stable acid which is mildly soluble in water. For a long time it is being used in the industrial sectors as cleaning agent and descaler due to its remarkable property of solubilizing of hard scale and other deposits. Furthermore, it can be used safely over equipments made of stainless steels as it avoids pitting or chloride induced stress corrosion cracking.

Sulfamic Acid can be developed from fuming sulfuric acid and urea. It serves the Paper Pulp Industry where it helps to prevent the degradation of pulp due to high temperature and permits bleaching. Apart from being a descaler, it also acts as a catalyst for esterification process and used as an ingredient in fire extinguishing media.

It serves in the elimination of hard water scale, protein deposits, copper corrosion, beer and milk stones and light rust. It cuts through excessive grout from tiling and solubilizing efflorescence from floors and walls. It finds applications in many desalination plants to clean heat exchanger, cooling water system, demisters, etc. It can be safely used on steel, iron, glass, wood equipments and with precaution can be also used on galvanized metal surfaces, copper, and aluminium.
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Oil Phase Corrosion inhibitors rely principally on the formation of barrier coatings preventing water from metal surfaces. Mostly ready to use in nature typically used direct from their container without any need for thinning or preparation for use. The coatings can be applied by brush, dip, and spray methods.

Corrosion is a common problem encountered in crude oil industries carrying high impurities corrosive in nature and degrading all the metal components of pipelines, flow lines, drilling bits, etc. With continual extraction of CO₂, H₂S, water, oil the equipment undergo corrosion resulting in loss of mechanical properties of the materials and eventually leading to metal loss. It protects both ferrous and non-ferrous metals like stainless steel, copper, aluminium, brass, copper, zinc, tin, bronze, and lead.

For parts that need longer term protection (months to years) or those stored in severe environmental conditions (i.e. outside storage) oil-based inhibitors are preferred due to their heavy film and the water rejecting properties they possess. The protective coating, they form varies (semi-hard, soft, oily, transparent, colored) with the specific product.
Features & Benefits:
- Good material compatibility
- Longer protection
- Selective coating on metals
- Applied by brush, dip and spray methods
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Chemtex Speciality Limited

S George(Sales Executive)
Citi Centre, Level 6, 10/11, Dr. Radha Krishnan Salai Mylapore
Tangra, Chennai - 600005
Tamil Nadu, India
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