Category Archives: Industrial Chemicals

Poly Aluminum Chloride (PAC)

Chemtex Speciality Limited is one of the leading international ISO 9001:2008 certified companies dedicated to provide its clients with leading edge technology in RO membrane pretreatment chemicals to treat RO feed water from scaling, corrosion, organic foulants like bacteria, fungi, algae and inorganic coagulants like PAC (powder & liquid)etc.

Aluminum Chlorohydrate is a group of specific aluminum salts having the general formula Al2Cl(OH)5 AlnCl(3n-m)(OH)m. It is used in deodorants and antiperspirants and as coagulant in water purification.

In water purification, this compound is preferred in some cases because of its’ high charge, which makes it more effective at destabilizing and removing suspended materials than other aluminum salts such as aluminum sulfate, aluminum chloride and various forms of poly aluminum chloride and poly aluminum chlorisulfate, in which the aluminum structure results in a lower net charge than aluminum chlorohydrate. Further, the high degree of neutralization of the HCl results in minimal impact on treated water pH, when compared to other aluminum and iron salts. It is known in names of Aluminum Hydroxychloride, Aluminum Chlorhydroxide, Aluminum Chloride, basic, Aluminum Chlorohydrol and Poly Aluminum Chloride (PAC) etc.

Chemtex’s Poly Aluminum Chloride (PAC) is premium quality product manufactured by state of the art technologies.

Equivalent or even better than CHARGEPAC range of products from CHEMBOND ASHLAND etc.

Application: – Water Treatment, Waste water treatment, effluent water treatment, RO water pre-treatment

Specification:- 
Properties: Typical Value
Form & Appearance: Powder/Liquid
Odor: Characteristic
Specific Gravity: Product Specific
pH (Neat): Product Specific
Solubility in Water: 100%

Dosage and Method: – Chemtex’s Poly Aluminum Chloride (PAC) is dosed at the time of pretreatment of RO feed water.

It is dosed exactly as per the dosage rate and method of CHARGEPAC range of products from CHEMBOND ASHLAND etc.

Key Features and Major Benefits:-

A) Municipal and Industrial Water Treatment :
Polyaluminum Chloride Solution is often employed as the primary coagulant in potable water and industrial water treatment plants, replacing the need for other coagulants such as alum, and in many cases also eliminating or at least greatly reducing the need for pH adjustment chemicals, coagulant aids and filter aids. Consistently recognized benefits of converting to a Polyaluminum Chloride are:

  1. Improved turbidity removal
  2. Improved color removal
  3. Increased TOC (Total Organic Carbon) removal
  4. Lower filter turbidities
  5. Increased filter run length
  6. Sludge reduction of 25-75%
  7. Simplified operations by eliminating pH and secondary polyelectrolyte feed
  8. Lower overall treatment costs

B) Municipal and Industrial Wastewater Treatment :
Polyaluminum Chloride Solution is also used in wastewater treatment applications for:

  1. TSS (Total Suspended Solids) removal
  2. Phosphate removal
  3. COD (Chemical Oxygen Demand) reduction in industrial wastewater treatment
  4. BOD (Biological Oxygen Demand) and TOC (Total Organic Carbon) removal in municipal wastewater treatment.

C) Pulp and Paper – On Machine :
Polyaluminum Chloride Solution is used extensively in several on machine applications as a:

  1. Size bonding agent
  2. Anionic trash scavenger
  3. Retention and drainage aid
  4. Pitch and stickies control additive

D) Separation of slurry in Industrial processes
E) Decontamination of dyes in Textile Industries
F) Sewage Water treatments

Please refer to your CSL service engineer for exact product dosage. To contact Chemtex for Polyelectrolyte and wide range of industrial water treatment chemicals, dial to +91-33-71111111 or mail us info@chemtexlimited.com.

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RO Coagulants or Cationic Polyelectrolyte

Chemtex Speciality Limited is one of the leading international ISO 9001:2008 certified companies dedicated to provide its clients with leading edge technology in RO membrane pretreatment chemicals to treat RO feed water from scaling, corrosion, organic foulants like bacteria, fungi, algae etc.

Chemtex’s R&D Team is continuously involved to meet the ever changing requirements of the RO membrane water treatment industry. As a result, Chemtex has repeatedly produced and is still producing superior quality and very effective RO pretreatment chemicals to run your RO systems smoothly and to enhance the system life.

 

Coming to fresh water and wastewater clarification, products that utilize a single type of coagulant chemistry typically do not provide exceptional results. Unlike single-component products, Chemtex’s RO Coagulants (Cationic Polyelectrolyte) comprise a family of products that typically utilize two or more chemistries to specifically improve the clarification of fresh water and wastewater over a wide range of conditions.

Coagulants from Chemtex can increase pre-filtration efficiency and productivity in membrane systems for RO feed water.

  • Improve liquids/solids separation
  • Are compatible with all RO and thin-film composite membranes
  • Assure consistent SDI feed water specifications set by membrane manufacturers
  • Increase resistance to filter breakthrough compared to metal coagulants
  • Provide better color removal than organic polymers
  • Are effective over a broad pH range
  • Minimize flushing time and backwash waste
  • Reduce treatment costs

It is a highly effective quaternary polymer compound which is used for color removal in textile, paper and dyeing industries and light color liquid from other industries.

Equivalent or even better than MAXFLOC T, MAXFLOC 20, MAXFLOC 30, MAXFLOC 502, MAXFLOC 504, MAXFLOC 506, MAXFLOC 507, MAXFLOC C-11, MAXFLOC C-21, MAXFLOC C-22, MAXFLOC C-31 and MAXFLOC C-33 from THERMAX; PERMAFLOC PC 306, PERMAFLOC PC 306 T and PERMAFLOC PC 603 T from NALCO; CHARGEPAC and AMERFLOC range of products from CHEMBOND ASHLAND; SOILSEP range of products from GE WATER etc.

Specification:-

  • Form & Appearance:      Powder/Liquid
  • Viscosity:             Product Specific (mPa.s)
  • Specific Gravity:                                Product Specific
  • pH:         Product Specific (pH)
  • Solid Content:                   Product Specific (in %)
  • Charge:                                Cationic
  • Solubility in Water:          100%

Application: – Water Treatment, Waste water treatment, effluent water treatment, RO water pre-treatment, Wastewater

 

Dosage and Method: – Chemtex’s RO Coagulants (Cationic Polyelectrolyte) are dosed during water pretreatment for solid/liquid separation before the water gets introduced to softner/reverse osmosis system. Coagulating chemical is diluting it with 10 – 40 times with water and then dosed into the waste water directly, after being mixed several minutes, waste is precipitated or air – floated and the water becomes clear.

It is dosed exactly as per the dosage rate and method of MAXFLOC T, MAXFLOC 20, MAXFLOC 30, MAXFLOC 502, MAXFLOC 504, MAXFLOC 506, MAXFLOC 507, MAXFLOC C-11, MAXFLOC C-21, MAXFLOC C-22, MAXFLOC C-31 and MAXFLOC C-33 from THERMAX; PERMAFLOC PC 306, PERMAFLOC PC 306 T and PERMAFLOC PC 603 T from NALCO; CHARGEPAC and AMERFLOC range of products from CHEMBOND ASHLAND; SOILSEP range of products from GE WATER etc.

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Cooling Tower Fill Liquid Cleaning Chemical

Cleaning Chemicals play a vital role in making the machines and equipments to operate & function properly. Some major industrial coolant & heating machines & equipments go out of work due to the problems like dirt, dust, grease, oil and presence of inorganic and inorganic foulants. These problems are removed by using Chemtex’s offered range of cleaning chemicals while improving the efficiency and functionality of the machines. Due to small negligence and mistake cooling & heating equipments can get crash and be insensitive to work. We implement closed loop system maintenance which is a vital part of HVAC and ACnR maintenance program. this maintenance program can overcome the bigger loses like power loss, system efficiency loss, HTF (Heat Transfer Fluid) and Refrigerant fouling and degradation, loss of system life, un-scheduled maintenance jobs for de scaling and fixing leaks and bursts due to corrosion. The major area of Closed loop maintenance are being employed in Chemtex Speciality Limited which include Proper system cleaning & passivation after commissioning and corrosion Control. More detail information about above matter is available at www.chiller-chemicals.com.

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Acid inhibitors

Acid inhibitors, in terms of metal manufacturing and handling can also be called acid corrosion inhibitors, rust preventatives or rust preventives (commonly termed or referred as Rodine). In essence, these are products that are used to permit corrosion protection to metals from strong and corrosive mineral acids like hydrochloric acid, nitric acid, sulfuric acid, sulfamic acid, hydrofluoric acid, phosphoric acid etc., and organic acids such as Cirtic Acid, Oxalic Acid, Formic Acid, Tartaric Acid, EDTA etc. against various applications as Acid Corrosion Inhibitors. Some of the applications are named as follows:-

  • Acid plant cleaning (CIP)
  • Heat exchanger, boilers and equipments descaling
  • Acid pH adjustment
  • Acid Pickling operations
  • Removal of CaCO3 in Oil Well Acidizing
  • HCL Acid Inhibitor (Rodine 213, Rodine 213 Special, Rodine 214, Rodine 103, Rodine 52)
  • Sulfuric Acid Corrosion Inhibitor (Rodine 130)
  • Sulfamic Acid Corrosion Inhibitor (Rodine 31A, Rodine 102)
  • Acid Pickling Corrosion Inhibitor (Rodine 85, Rodine 95, Rodine 50, Rodin 55, Rodine 130)

Citric Acid Inhibitor:

Citric acid is a weak organic acid. It is a natural preservative/conservative and is also used to add an acidic, or sour, taste to foods and soft drinks. In biochemistry, the conjugate base of citric acid, citrate, is important as an intermediate in the citric acid cycle, and therefore occurs in the metabolism of virtually all living things.

 

The inhibition effect of citric acid on the corrosion behaviour of aluminium in 2M NaCl solution (pH 2) was studied with the help of potentiodynamic polarisation, electrochemical impedance spectroscopy (EIS) and linear polarisation resistance (LPR) techniques. The experimental results showed that citric acid inhibits the corrosion of aluminium in NaCl solution and the inhibition efficiency depends on its concentration. The protection efficiency increases with citric acid concentration up to a critical value of 1·0 × 10M. At higher concentrations, the inhibition efficiency reduced again with increasing concentration. The mechanism of inhibition was attributed to the adsorption of citric acid onto the metal surface at the time of cleaning, and de-scaling. We make use of high quality machines that insure accuracy in the formation of our mixtures.

 

Acetic Acid Inhibitor, Formic Acid Inhibitor:

Acetic is an organic compound with the chemical formula CH3CO2H (also written as CH3COOH). It is a colourless liquid that when undiluted is also called glacial acetic acid. Formic acid (also called methanoic acid) is the simplest carboxylic acid. Its chemical formula is HCOOH or HCO2H. It is an important intermediate in chemical synthesis and occurs naturally, most notably in the venom of bee and ant stings.

 

Corrosion behaviour of copper has been investigated in different compositions of formic acid and acetic acid at 30 °C by a potentiostatic method. The maximum corrosion rate was found in 20–40 mol/o formic acid and in 20 mol/o acetic acid in aqueous solution mixtures. The corrosion rate depended on the concentration of either acid. Formic acid is observed to be more corrosive than acetic acid. The metal exhibited active-passive behaviour in the concentration range of 30–70 mol/o of HCOOH acid in the solution mixture. A short passivity range of potential with a high passivity current density was observed for the metal in the solution mixtures of HCOOH acid while in solution mixtures of acetic acid the metal exhibited only active dissolution.

 

The acetic acid and formic acid are fully organic acids that come to use in the systems for the purpose of mild cleaning, de-rusting, ph adjustment and de-scaling of applications.

Application: Multiple applications for metal surface treatment, cleaning, descaling & derusting for various industries.

 

Specification:

Chemical Type:  Blend of specialized chemical compounds

Form:  Liquid

Specific Gravity:  Ranges from 1.0 – 1.2 depending upon product

Ph:  Product Specific

Solubility:  Soluble in Water

 

Dosage: Dosage depends on product, application, acid type and concentration and operating temperature. The specific dosage rates and method will be specified by the Chemtex technical representative.

 

Major Benefits: Metal Protection Wetting properties for effective cleaning.

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Industrial Coolant Antifreeze Chemical

Propylene glycol is used as antifreeze agent and industrial coolant in different industries where contamination with food is possible, de-icing solutions etc. Propylene glycol is generally regarded as safe for use in food. It is used in the industries like food, beverage etc for heat transfer, also used in vehicles. Antifreeze Coolant should be efficient in transferring the heat as well as preventing scale and corrosion.

 

Propylene glycol [HO-CH2-CH(OH)-CH3] is pronounced as pro’puh-leen-gly’col. It is a clear, colorless, slightly syrupy liquid at room temperature. The compound may exist in air in the vapor form though it must be heated or briskly shaken to produce a vapor. It is actually a multi-variant chemical compound. Propylene glycol – in an industrial cooling and heating process terminology is referred as industrial coolant or heat transfer fluid (HTF) or the common fluid that is used in large installations for transporting heat from one place to another.

 

Features:

  • serves as a solvent
  • offers outstanding stability with high flash and boiling points
  • reduces the freezing point
  • increases the boiling point
  • helps to bind and transport other substances (excipient)
  • holds and dissolves active ingredients equally in a medium
  • connects and stabilizes insoluble fluids (emulsifier)
  • attracts/holds water/moisture (hygroscopic)

 

Usage:

  • As an emulsification agent in Angostura and orange bitters
  • As a moisturizer in medicines, cosmetics, food, toothpaste, shampoo, mouth wash, hair care and tobacco products
  • As a carrier in fragrance oil
  • To produce polyester compounds
  • As a base in deicing solution
  • In smoke machines to make artificial smoke for use in firefighters’ training and theatrical productions
  • As a solvent for food colors and flavorings
  • As an ingredient, along with wax and gelatin, in the production of paintballs
  • As a wetting agent, used to determine drying time in paints and coatings

 

A non-toxic substitute of Ethylene Glycol:

Propylene Glycol is the replacement of Ethylene Glycol in newer automotive antifreezes and de-icers in aircrafts. Like Ethylene Glycol, Propylene Glycol also has the special physical characteristics of depression of freezing point when mixed with water. It happens due to disruption of hydrogen bonding. Pure water freezes at 0OC. But aqueous solution of Propylene Glycol (10% by weight) has a freezing point of -3OC. 30% by weight aqueous solution of Propylene Glycol freezes at -12OC and a 60% by weight Propylene Glycol and water mixture can further lower down this freezing point to -51OC.

 

Why Glycol turned into red color?

Because of the extensive corrosion & rust in the system metal makes the glycol turn reddish in color. At this point the glycol is fouled with iron contaminants that increase the glycol degradation rate. It is important to add corrosion inhibitor to the glycol system to avoid such degradation of glycol.

 

Application Areas:

Beverages & Juices, Breweries & Distilleries, Packaged Food Freezing, Canneries & Preservers, Fish Processing Units, Pharmaceutical & Bulk Drugs, Poultry Processing Industry, Thermal Storage System, Heating and Cooling Systems, Snow Melting and Refrigeration, Ice Skating Rinks, Vegetable Oil Industry, Ice Manufacturer, Cold Storage Systems etc.

 

Product Physio-Chemical Data:

  • Form and Appearance – Clear, colorless liquid
  • Assay as Propylene Glycol – 99.8%
  • Specific Gravity – 1.04 (approx.)
  • Molecular Wt. –  76.0548 gm/mol
  • Solubility in Water – 100%

 

Handling Measures, Precaution & Storage:

Propylene Glycol is slightly hygroscopic & the storage temperature is not critical, it must be stored under conditions so that contamination with water and adsorption of moisture are prevented. It should be noted however for product quality reasons the storage temperature should not go above 40°C. At below freezing temperatures the product viscosity might become too high for transfer from the storage containers with the pumps available. PG is a stable chemical and is not expected to deteriorate significantly with time provided if it is stored as indicated. The drums should be stored in dry condition, better to use the original drums rather than the other drums and if the drums are opened then it must be closed tightly at unused situation. The chemical can be stored up to 6 months.

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Coolant Corrosion Inhibitor

Diesel Engine Corrosion Inhibitor is designed to protect cast iron diesel engine cooling systems. It is combined with chemical additives that protect against sludge and mineral scale deposits. It is effective against liner pitting and cavitation erosion. It prevents over heating of engine and thus reducing chances of shut down. It is non-harmful to radiator or heater connecting hoses, diesel liner seals and ‘O’ rings.

Engine Radiator Corrosion protection is achieved by the film-forming ability of the corrosion inhibitor and scale suppressant to keep engines clean and free from scale, and reduce downtime and maintenance costs.

The product protects cooling systems against corrosion, liner pitting, cavitation-erosion, mineral scale deposits and electrolysis. Equivalent or even better than Nalcool 2000, Rodine 231, Rodine 234, Rodine 244, etc

Application: All types of Engine Jackets, Radiator and Engine coolant.

Specification:

Chemical Type Organic chemical compound
Form Red colored liquid
Odor Slight characteristic
pH 12+1
Solubility Completely soluble in water & glycol coolant

Dosage:

Diesel Engine Corrosion Inhibitor is directly added to the water or coolant mixture in the recommended dosage depending upon the engine capacity and load. A routine top-up is required to maintain the concentration of product as adviced.

Major Benefits:

  • protect cast iron diesel engine cooling systems.
  • protect against sludge and mineral scale formation.
  • Prevents over heating Effective against liner pitting and cavitation erosion.
  • Not harmful to radiator or heater connecting hoses, diesel liner seals and ‘O’rings.

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Cleaning Products For Food & Beverage & Dairy Industry

Chemtex offers a wide range of cleaning chemicals for industrial and institutional cleaning. Our range of Cleaning Chemicals For Food & Beverage, Dairy Industry includes germicide cleaner, cip caustic additive, cip cleaning chemical, cleaning chemicals, chlorinated foaming cleaner, general purpose neutral liquid cleaner, bottle washing chemical additive, high foaming alkaline degreaser cleaner.

Chemtex offers a wide range of cleaning products and chemicals for industrial and institutional cleaning, degreasers and decarbonizing that are designed for various applications depending upon:-

  • type of soil to be removed
  • metallurgy of system
  • methods of cleaning such as cip (cleaning-in-place) and opc (open-plant-cleaning)
  • foaming characteristics (high or low)
  • ph values
  • cationic / anionic / non-ionic surfactant based
  • chelation value (cv) required
  • emulsification characteristics

Chemtex speciality limited offers a wide range of cleaning chemicals (cleaners) and cleaning additive for food and beverage, dairy, brewery, pharma, marine industry:-

    • General Purpose Neutral Liquid Cleaner
    • Cip Caustic Additive
    • Bottle Washing Chemical Additive
    • Cip Cleaning Chemical
    • Acidic Detergent Cleaner For Aluminum
    • Germicide Cleaner (Cleaning Agent)
    • High Foaming Alkaline Degreaser Cleaner
    • Chlorinated Foaming Cleaner
    • Foamless Alkaline Cleaner
    • Non-Fuming Acidic Descaler

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