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Citric Acid anhydrous appears as an odorless white crystalline granule with a strong acidic taste. It is very soluble in water, freely soluble in alcohol and slightly soluble in ether.

Citric Acid is a constituent of fruit and soft drinks and other food products. Uses include flavor enhancement, bacterial inhabitant, pH adjustment, and as an anti oxidant.

APAC's Citric Acid is available in granular and fine granular particle size.   APAC's Citric Acid meets Food Chemical Codex (FCC), United States Pharmacopoeia (USP) specifications.

 

 

APAC's Citric Acid is Orthodox Union Kosher Certified.  

 

Packaging   

50 lbs. (22.7 Kg) white Kraft, Semi-extensible paper bag

= mil HDPE liner

Storage  

Storage should be in tight containers in a cool, dry, well-ventilated area.

Technical Services 

 APAC 's Citric Acid is available in granular and fine granular particle size.
 
 APAC brand Citric Acid is Kosher approved and meets FCC/USP specification.
 
 For Technical assistance, call: (626)203-0066 or (866)849-APAC(2722).  

 

Industrial Application 

Food Applications

 

 

 

 

(Click on any of the links below for details)

Algicides

Animal Feed

Cigarettes

Circuit Boards

Concrete Admixture

Detergents

Enhanced Oil Recovery 

Environmental Aspects

Fertilizer Micronutrients

Fossil-Fuel Power Plants

Hard Surface cleaners

Hair Shampoos and Rinses

Nuclear Reactors

Oil Well Acidizing

Radiator

Paint Industry

Paper

Pet Food

Pharmaceuticals

Plating

Ship Blige and Reverse Osmosis Cleaning

Textiles

Water Softener Resin

 

(Click on any of the links below for details)

Beverages

Canning Industry

Confections

Coffee Creamers 

Dry Beverages

Dietary Calcium Supplements 

Jello

Jams & Jellies

Examples of chelation in the canning industry 

Oil

Fruit and Vegetable Processing 

Pudding/Pie Filling 

Process Cheese

Seafood

 

 

 

 

Industrial Application 

Algicides    

Citric Acid is used to chelate copper in formulations used to kill algae in reservoirs and natural waters.  The citric acid chelates the copper, then slowly releases it resulting in extended time of effectiveness. 

Animal Feed   

Citric acid is used in animal feeds to form soluble, easily digestible chelates of essential metal nutrients, enhance response to antibiotics, enhance flavor to increase food uptake, to control gastric pH and improve the efficiency of the feed.

In the slaughter operation, sodium citrate is used to prevent the coagulation or clotting of fresh blood.  Calcium is an essential mineral for the clotting mechanism to occur.  Citrate chelates the calcium, thus preventing the coagulating from taking place.

Cigarettes  

Air-cured tobacco smoke is often alkaline, giving harsh and irritating flavors. Citric acid and other components are added to balance the flavors.  

Citric acid is also used in cigarette paper to control the burn rate.  This ensures the tobacco and paper burn at the same rate.

Circuit Boards  

Citric acid can be used to clean circuit boards prior to soldering.  Although more costly than mineral acids, citric acid has the advantage of being environmentally friendly.

Concrete Admixture 

Citric acid is added to concrete formulations to retard the set rate and reduce the amount of water required.  In the retarding the set rate, the Citrate interferes with the hydration of portland cement.  In its role as a water reducer, citrate acts as a dispersants, reducing the viscosity of the cement slurry so less water is needed to make a workable mixture.

Detergents  

The largest industrial application for citrates is the detergent industry.  In liquid detergents, sodium citrate is used as a builder, to increase the effectiveness of the surfactants, due to its high solubility and bio-degradability.

In powder detergents, sodium citrate is used as a co-builder and processing aid.  Sodium citrate also contributes alkalinity to enhance surfactant performance.  The environmentally friendly nature of sodium citrate is a major factor in the use of citrates in the detergent industry.

Enhanced Oil Recovery

Aluminum citrate is used for in-situ gelling of polymers in polymer flooding operations.  The citrate controls the rate of availability of the aluminum ion.

Environmental Aspects 

  Many of the following industrial applications utilized citric acid due to its environmentally friendly properties.. Citric acid is found throughout nature in many fruits and vegetables and is a natural component in metabolic processes.  Citric acid is highly biodegradable and is an affirmed GRAS food additive.

Fertilizer Micronutrients

Citric chelates of iron, copper, magnesium, manganese and zinc are used to correct soil deficiencies because they are soluble in water at normal soil pH.  Metal sulfates are dissolved in water and citric acid followed by neutralization with ammonia.  The soluble citrate chelate promotes the transfer of the metal nutrient into the plant's root or leaf system  the biodegradability of citric acid is important for this application.

Fossil-Fuel Power Plants

Ammoniated citric acid is used to clean metal oxides from the water side of steam boilers with a two-step single-fill operation  the resulting surface is clean and passivated.  The cleaning solution can easily and safely be disposed of by incineration or  liming.

Hard Surface Cleaners

Citric acid is used in liqued hard surface (floor).  Citrate acts as a scale-dissolver, buffer and as an anti-redeposition agent.

Hair Shampoos and Rinses  

Citric acid is added to hair care formulations to adjust the pH,  act as a buffer and chelate metal ions to prevent discoloration and decomposition  the presence of the citric ion stabilizes the formulation.

Nuclear Reactors 

Citric acid is utilized in nuclear reactors to remove mill scale from welding operations.  HC1 cannot be used due to the possibility of chloride stress fracturing of the stainless steel.

Oil Well Acidizing

Citric acid is used in oil well acidizing to prevent the formation of insoluble gels of iron hydroxide.  

Wells are typically injected with HC1, oxidation reactions can occur which cause formation of insoluble iron hydroxide gels.  These gels interfere with pumping hydroxide gels.  These gels interfere with pumping operations.  Citric acid is added to the well to chelate the iron thus preventing the gel formation.

Radiator

Sodium citrate is used in radiator cleaning formulations to chelated  metal  from the metal oxide scales and to maintain the pH.      

Ship Bilge and Reverse Osmosis Cleaning 

Citric acid is used as a chelating agent in cleaning bilges and desalination units aboard ships.

In bilge cleaning, citric acid is used for rust removal.

In desalination units, citric acid solutions are used to remove iron, calcium and other cations which foul the cellulose acetate membranes used in reverse-osmosis systems.  Citric acid will solubilize these ions without damaging the membranes.

Paint Industry  

In the paint industry citric acid is used to retard the setting of titanium dioxide, the most common pigment used in paints and other coatings.

Paper  

Citric acid is added to the pulp slurry prior to bleaching to control paper staining by sequestering metal ions. 

 

Pet Food  

In the animal feed industry, the primary use of citric acid is in pet food, where it is the flavor enhancer of choice. Fumaric acid is also used in this application.

Pharmaceuticals   

Citric acid is widely used as a flavoring and stabilizing agent in pharmaceutical preparations.  It is used in liquid preparations to enhance fruit flavors and to impart a desirable tart taste that helps mask medicinal flavors.  

Citric acid help maintain stability of the active ingredients by buffering aqueous solutions, sequestering trace metals, and assisting in the dispersion of suspensions.  

Citric acid in syrups, elixirs, of suspensions and solutions is considered a well established market.

The largest use of citric acid in the pharmaceutical industry is for the effervescent effect it produces when combine with bicarbonates or carbonates in antacids and dentrifices.  Effervescence, beside improving palatability, can greatly improve the solubility of co-constituents.

Plating 

Citric acid is used as a chelating agent to control the deposition rate of metals in both electroplating and electroless plating operations.  It is also used to buffer the pH of the plating bath.

Textiles 

In textile  finishing, citric acid is used to adjust pH, as a buffer and as a  chelating agent in dye operations and in durable-press finishes using glyoxal resins.  In this application citric acid is easier and sager to work with than acetic acid.

Water Softener Resin 

Citric acid is mixed in the salt to chelate iron from fouled water softener resins in both home and commercial systems.

 

Food Applications 

Beverage 

Citric acid is the acidulant of choice in the beverage industry.  Citric acid is used extensively in carbonated beverage for flavoring and buffering properties.. Their high solubilities make them ideal for syrup concentrates.  

Citric acid is also used in non-carbonated beverages as flavoring agents and buffers.  They also increase the effectiveness of anti-microbial preservatives.  Modifications such as juice-added beverages, low calorie beverages, and thirst quenchers use citric acid alone and in combinations with citrate salts.

Canning Industry  

Citric acid lowers the pH to reduce heat processing, chelates trace metals to prevent enzymatic oxidation and color degradation, and enhances the flavor.

Confections 

Citric acid is utilized in the confection industry.  Citrates control sugar inversion, optimize gel-setting characteristics, provides tartness and enhance flavor.

Coffee Creamers 

Sodium citrate is used in dairy and non-dairy creamers to stabilize the casein.  This prevents feathering of the creamers when added to hot beverages.

Dietary Calcium Supplements  

Citric acid in the from of calcium citrate is used as a dietary calcium supplement.  Studies have shown that calcium citrate is more bio-available than calcium carbonate.

Dry Beverage 

Citric acid is used in dry powder beverages for flavor and pH control. 

In artificially sweetened beverages citric acid add the bulk and mouth feel normally obtained from the sucrose.

Jello     

Jello Brand Gelatin is another example of a food product which uses Fumaric acid.  The low solubility rate is overcome by solubilizing the gelatin in boiling water.

Jams & Jellies  

Citric acid used in jams and jellies to provide tartness and to control the product pH for optimum gelation.

 

Examples of chelation in the canning industry 

The lower set of canned goods demonstrates how citric acid as a chelating agent helps preserve the natural color and prevent discoloration in canned mushrooms, kidney beans and canned corn.  The upper set of cans show the same products without citric acid.

Fruit and Vegetable Processing 

Citric acid is used to inhibit enzymatic and trace metal-catalyzed oxidation reactions which can cause color and flavor deterioration  it is often used with ascorbic acid for this purpose.  The stability of frozen foods is optimized by the presence of citric acid.

Oil   

Citric acid is utilized in Canola oil de-gumming.

Citric acid is also used in the deodorization and hydrogenation steps in oil processing to chelate trace metals which can catalyze rancidity reactions.

Pudding/Pie Fillings 

Fumaric Acid is used in pudding and pie fillings to provide pH control.  The non-hygroscopic nature of Fumaric acid lends itself to the less expensive packaging of these product.

Process Cheese  

Sodium Citrate is used in the process cheese industry.  Sodium citrate functions as an emulsifying salt to stabilize the water and oil phases of the cheese and improves body and texture.

 

Seafood  

Citric acid is used in the seafood industry to prevent discoloration and the development of off-odors and flavors by chelating trace metals which catalyze these reactions.

Citric acid can be used in conjunction with ascorbic acid as a dip, glaze or used directly in solutions form.

 

 

 

 

 

 

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