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Potassium Carbonate

SoapGoods Inc
Price in points: 100 points
In stock

About Potassium Carbonate

All products are for external use only

Free shipping notes: 40 Lb Bag in Box

40 Lb Bag in box ships free in lower 48 continental states. Soapgoods Inc reserves the right to ship free shipping items via any carrier.


  • Synonyms: Potassium Carbonate, K2CO3, Potash, K-Gran, Pearl Ash, Pearl dust, Salt absinthii, Salt of Tartar, Kaliumcarbonat, Montreal potash, salt of wormwood, Pearlash, Potash, PotCarb
  • INCI Name: Potassium Carbonate
  • CAS: 584-08-7
  • Einecs: 209-529-3
  • Grade: FCC (Food Chemicals Codex)
  • Purity: 99.5%

The Science

  • Viscosity: Powder / Granules
  • Solubility: Soluble in water
  • Storage: Cool, dark dry area, air tight container preferred


  • Appearance: Free flowing granular white powder
  • Odor: Low to no scent
  • Natural: Synthetic
  • Packaging: 1 Lbs is a single bag, 6 Lb is a single bag, 50 lb is a single 50 lb bag. 500 lb is 10 x 50 lb bag
  • Shelf life: Suggested retest date 3 year from purchase

Usage / Benefits

  • Industries: Chemicals, Glass manufacturing, Soap production, Potash production, Textiles, Food processing, Fertilizers, Fire extinguishers, Photography, Winemaking.
  • Applications: Water softening, pH adjustment, CO2 absorption, Fire extinguishing, Drying agent for solvents, Food additive, Electrolyte in batteries, Desiccation, Cocoa powder alkalizing agent, Cheese production.
  • Benefits: Neutralizes acids, Enhances pH stability, Improves solubility of certain compounds, Provides cation source in solutions, Effective buffering agent, Environmentally friendly, Non-toxic in regulated amounts, Essential for certain fermentation processes, Increases shelf-life of certain products, Enhances texture in specific food applications.
  • Products Uses: Soap production, Glass manufacturing, Pottery glazes, Textile dyeing and processing, Cocoa processing, Food additive (pH regulator), Fire extinguishers, Electrolyte in dry cell batteries, Baking powder component, Water softening.
  • Safety: Generally safe, however keep out of eyes and do not eat.
  • Cautions: Not for ingestion, keep away from pets and children who may attempt to eat.
  • External Use Only: Even if food grade, we do not provide items for ingestion, all of our items are for external use only.

Potassium Carbonate

Potassium Carbonate (K2CO3) is an inorganic salt that is widely utilized in various industries. Within the realms of personal care, soap making, and cosmetic manufacturing, this compound exhibits significant applications. This article outlines the essential aspects of Potassium Carbonate, emphasizing its role in these specific fields.

Physical and Chemical Properties

Potassium Carbonate appears as a white, crystalline powder that is highly soluble in water. It is known for its alkaline properties, which contribute to many of its functional uses. The compound's chemical stability, high pH, and buffering capabilities make it suitable for a wide range of applications in personal care and cosmetics.

Personal Care Applications

1. pH Adjustment

Potassium Carbonate is often used to adjust the pH of cosmetic and personal care products, helping to maintain the integrity, efficacy, and safety of the formulations. Its alkaline nature enables it to neutralize acidic components, achieving the desired pH balance in various products like creams, lotions, and shampoos.

2. Bath Products

As a water softening agent, Potassium Carbonate is incorporated into bath products to enhance the feel of water on the skin. By neutralizing the hardness of water, it provides a more luxurious and smooth bathing experience.

Soap Making

1. Saponification

In soap making, Potassium Carbonate plays a vital role in the saponification process. It can be used to create liquid soaps and soft soaps by reacting with fatty acids. The resultant soap possesses moisturizing and cleansing properties, suitable for various skin types.

2. pH Regulation

The control of pH is crucial in soap formulation, and Potassium Carbonate is used to achieve the optimal alkalinity. By adjusting the pH, it ensures that the soap maintains its structure, texture, and performance while being gentle on the skin.

Cosmetic Making

1. Emulsification

Potassium Carbonate serves as an emulsifying agent in cosmetic products, helping to blend oil and water-based ingredients. Its ability to stabilize emulsions contributes to the formulation of creams, lotions, and other skin-care products, ensuring a uniform and pleasing texture.

2. Thickening Agent

Due to its unique physical properties, Potassium Carbonate is used as a thickening agent in various cosmetic products. It helps in achieving the desired consistency, viscosity, and spreadability, thus enhancing the application experience.

3. Buffering Agent

As a buffering agent, Potassium Carbonate helps in maintaining the stability of cosmetic products by preventing fluctuations in pH. This ensures that the product retains its quality, efficacy, and safety during storage and use.

Environmental Considerations

Potassium Carbonate is often favored for its low environmental impact. It is considered to be biodegradable and non-toxic, aligning with the growing demand for eco-friendly and sustainable ingredients in personal care and cosmetic products.

Potassium Carbonate Uses

1. Industry

In various industrial applications, Potassium Carbonate is used for producing glass, ceramics, dyes, and pigments. It serves as a key ingredient in manufacturing optical lenses and other glass products.

2. Agriculture

Potassium Carbonate is used as a fertilizer in agriculture. It provides an essential source of potassium for plant growth and can enhance soil quality by neutralizing acidic conditions.

3. Food Processing

In food processing, Potassium Carbonate is used as a leavening agent in baking and as a stabilizer in various products such as wine and cocoa powder. Its alkaline properties help in pH control.

4. Personal Care and Cosmetics

Within the personal care and cosmetics sector, Potassium Carbonate is utilized for pH adjustment, emulsification, and as a buffering agent. It's found in products like lotions, shampoos, and creams.

5. Soap Making

In soap making, Potassium Carbonate plays a vital role in saponification, helping to create liquid soaps. It also assists in pH regulation, ensuring the soap's quality and effectiveness.

6. Water Softening

As a water softening agent, Potassium Carbonate is used in bath products and industrial applications. It neutralizes the hardness of water, providing a smoother feel and preventing scale build-up in machinery.

7. Fire Extinguishers

Potassium Carbonate is an essential component in certain fire extinguishers. Its ability to neutralize acids makes it effective in combating specific types of fires.

8. Environmental Control

It is used in environmental control processes, such as flue gas desulfurization, where it reacts with sulfur dioxide to reduce air pollution.

9. Laboratory Applications

In laboratory settings, Potassium Carbonate is used as a mild drying agent and in various chemical reactions as a base.

Potassium Carbonate Benefits

1. Buffering Agent

Potassium Carbonate serves as an effective buffering agent, helping to regulate and stabilize pH levels in various products and processes.

2. Water Softening

When added to water, it reacts with the calcium and magnesium ions, preventing them from causing hardness. This property is especially beneficial in the textile and soap industries.

3. Essential Component in Glass Manufacturing

It plays a pivotal role in decreasing the melting temperature of silica, which makes the production process of glass more energy-efficient.

4. Enhanced Soap Production

In the soap industry, Potassium Carbonate helps in saponifying fats and oils, producing a softer and more liquid consistency compared to sodium carbonate.

5. Improved Texture in Pottery

In pottery, Potassium Carbonate can improve the texture and hardness of glazes, providing a smooth finish to ceramic products.

6. Eco-friendly Fire Suppressant

It is a vital component in some fire extinguishers as it can effectively suppress flames without leaving harmful residues.

7. Essential in Cocoa Processing

Potassium Carbonate is used in the cocoa industry to balance the pH of cocoa nibs, enhancing the overall flavor of chocolate products.

8. Effective in Textile Processing

Its water-softening property aids in the dyeing process, ensuring even dye uptake and vibrant colors in textiles.

9. Battery Functionality

As an electrolyte in dry cell batteries, it ensures efficient energy transfer, prolonging battery life.


Potassium Carbonate Solubility

Potassium Carbonate is a water-soluble compound with solubility characteristics that depend on various factors:

1. Water Solubility

Potassium Carbonate is highly soluble in water, meaning it readily dissolves in aqueous solutions.

2. Solubility at Different Temperatures

The solubility of Potassium Carbonate may vary with temperature. Generally, its solubility increases with higher temperatures, allowing more compound to dissolve in hot water.

3. Saturation Point

Like other soluble compounds, there is a limit to how much Potassium Carbonate can dissolve in a given volume of water. This point is known as the saturation point, beyond which additional compound will not dissolve.

4. Influence of pH

The pH of the solution can impact the solubility of Potassium Carbonate. Changes in pH may affect the compound's ability to dissolve and remain in solution.

5. Hydration

Potassium Carbonate may undergo hydration when dissolved in water, forming hydrated compounds with varying solubilities.

Understanding Solubility in Potassium Carbonate

Potassium Carbonate's high solubility in water makes it suitable for various applications where its dissolution properties are utilized.

Potassium Carbonate Chemical Formula

Potassium Carbonate is a chemical compound represented by the formula K2CO3:

1. Potassium Element (K)

The symbol K represents the element potassium. Potassium is an alkali metal with atomic number 19 on the periodic table.

2. Carbonate Ion (CO32-)

The carbonate ion consists of one carbon atom (C) and three oxygen atoms (O) arranged in a trigonal planar geometry. The negative 2 charge (2-) indicates the presence of two extra electrons.

3. Chemical Composition

The combination of two potassium ions (K+) and one carbonate ion (CO32-) results in the chemical formula K2CO3.

The Composition of Potassium Carbonate

The chemical formula K2CO3 represents the combination of potassium and carbonate ions, which come together to form the compound.

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How Fast Can I get it?

We Guarantee Your order ships out the same or next business day! This means in the South East you will have your order in 1 to 3 business days, in the North East normally 3 to 4 days and in the West normally 4 to 5 days. For full details on shipping and processing times please see our expected delivery times.

These times are based on business days, not including weekends or holidays.

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USPS Transit Times

Typical Delivery Times to Major US Cities

Major Cities Total Business Days +1 / -1
Alabama (AL) - Montgomery, Birmingham 1
Alaska (AK) - Juneau, Anchorage 7
Arizona (AZ) - Phoenix, Tucson 4
Arkansas (AR) - Little Rock, Fayetteville 2
California (CA) - Sacramento, Los Angeles, San Francisco, San Diego, Sacramento, San Jose 4
Colorado (CO) - Denver, Colorado Springs 3
Connecticut (CT) - Hartford, New Haven 2
Delaware (DE) - Dover, Wilmington, Newark 2
Florida (FL) - Tallahassee, Orlando, Miami, Jacksonville, Tampa, Destin 2
Georgia (GA) - Atlanta, Savannah, Augusta, Athens 1
Hawaii (HI) - Honolulu, Kailua 7
Idaho (ID) - Boise, Coeur d'Alene 4
Illinois (IL) - Springfield, Chicago, Peoria, Rockford 2
Indiana (IN) - Indianapolis, Fort Wayne 2
Iowa (IA) - Des Moines, Cedar Rapids 2
Kansas (KS) - Topeka, Wichita, Kansas City 2
Kentucky (KY) - Frankfort, Louisville, Lexington 2
Louisiana (LA) - Baton Rouge, New Orleans, Lafayette 2
Maine (ME) - Augusta, Portland, Bangor 3
Maryland (MD) - Annapolis, Baltimore 2
Massachusetts (MA) - Boston, Cambridge, Worcester 2
Michigan (MI) - Lansing, Detroit, Grand Rapids 2
Minnesota (MN) - St. Paul, Minneapolis, Duluth 3
Mississippi (MS) - Jackson, Biloxi, Hattiesburg 1
Missouri (MO) - Jefferson City, St Louis, Kansas City 2
Montana (MT) - Helena, Billings 4
Nebraska (NE) - Lincoln, Omaha 2
Nevada (NV) - Carson City, Las Vegas, Reno 4
New Hampshire (NH) - Concord, Manchester, Portsmouth 2
New Jersey (NJ) - Trenton, Newark, Jersey City 2
New Mexico (NM) - Santa Fe, Alburquerque 3
New York (NY) - Albany, New York, Rochester, Buffalo, Albany, Syracuse, Niagara Falls, Ithaca 3
North Carolina (NC) - Raleigh, Charlotte 2
North Dakota (ND) - Bismarck, Fargo 3
Ohio (OH) - Columbus, Cleveland, Cincinnati 2
Oklahoma (OK) - Oklahoma City, Fairview, 2
Oregon (OR) - Salem, Portland, Eugene 5
Pennsylvania (PA) - Harrisburg, Philadelphia, Pittsburgh 2
Rhode Island (RI) - Providence, Newport 2
South Carolina (SC) - Columbia, Charleston 1
South Dakota (SD) - Pierre, Sioux Falls, Rapid City 3
Tennessee (TN) - Nashville, Memphis 2
Texas (TX) - Austin, Houston, Dallas 3
Utah (UT) - Salt Lake City, St. George 3
Vermont (VT) - Montpelier, Burlington 3
Virginia (VA) - Richmond, Virginia Beach 2
Washington (WA) - Olympia, Seattle, Vancouver, Spokane 5
West Virginia (WV) - Charleston, Morgantown 2
Wisconsin (WI) - Madison, Milwaukee 2
Wyoming (WY) - Cheyenne, Jackson 4

Disclaimer: All product descriptions and specifications provided in this description are intended as a guide only and are subject to change without notice. While we strive for accuracy, discrepancies or errors may be present. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Thank you SoapGoods! I ordered the 50 pound option of Potassium Carbonate. This was my first ever order from SoapGoods. The box arrived in great condition. The bag of Potassium Carbonate was wrapped and tied in a clear 'trash' bag and shipped in a box. Highly recommend! I will be ordering from SoapGoods again.
I want to purchase one pound of potassium carbonate, how do I do this?
"Hi everyone; I'm new at Soapgoods so I didn't known what to expect. Well I place my order for potassium carbonate and it came right on time. I know i will be using Soapgoods from now on.
Thanks ken richard"
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Safety Data Sheet (Potassium-Carbonate.pdf, 132 Kb) [Download]