What is the Compound Na2CO3 Called?


Sodium carbonate (Na2CO3) is a widely used inorganic compound that has various names depending on its form, usage, and context. The most common and widely recognized name for Na2CO3 is “sodium carbonate,” but it is also referred to by other names such as soda ash, washing soda, and soda crystals. In this article, we will explore the different names, properties, uses, and production methods of Na2CO3.

The Name “Sodium Carbonate”

Na2CO3 is commonly known as “sodium carbonate” because it is an ionic compound composed of sodium (Na+) and carbonate (CO3^2-) ions. The name accurately reflects the chemical composition of the compound and is widely accepted in scientific and industrial settings.

Soda Ash

Another commonly used name for Na2CO3 is “soda ash.” This name originated from the historical production method of sodium carbonate, which involved extracting the compound from the ashes of certain plants.

Historical Background

In ancient times, people discovered that certain plants, such as the saltwort plant (Salsola soda), contained sodium carbonate in their ashes. These ashes were collected and leached with water to extract the sodium carbonate, which was then used for various purposes, including soap making, glass production, and textile industry.

Due to the plant-based production method, the compound became known as “soda ash.” However, today, most sodium carbonate is produced synthetically through chemical processes rather than being extracted from plants.

Is Na2CO3 (Sodium carbonate) Ionic or Covalent?

Washing Soda

Na2CO3 is also commonly referred to as “washing soda,” especially in household and cleaning contexts. This name reflects its use as a cleaning agent and detergent booster.

Properties and Uses in Cleaning

Washing soda is highly alkaline, which makes it effective in removing grease, stains, and odors from various surfaces, fabrics, and dishes. It can also soften water, making it useful in laundry and dishwashing to improve the effectiveness of detergents.

Additionally, washing soda is used in various household cleaning recipes, such as homemade laundry detergents, all-purpose cleaners, and oven cleaners. Its ability to dissolve grease and grime makes it a versatile and affordable cleaning solution.

Soda Crystals

Yet another name for Na2CO3 is “soda crystals.” This name is primarily used in the United Kingdom and some other English-speaking countries.

Use in Cleaning and Household Applications

Soda crystals have similar properties and uses as washing soda. They are particularly popular in the UK for various cleaning tasks, such as unclogging drains, removing burnt residues from pots and pans, and maintaining the cleanliness of household appliances.

Production of Sodium Carbonate

Now that we have explored the different names and uses of Na2CO3, let’s delve into its production methods.

Solvay Process

The most widely used industrial method for producing sodium carbonate is the Solvay process. This process was developed in the 19th century by Ernest Solvay, a Belgian chemist.

The Solvay process involves several steps:

  1. Brine Purification: Sodium chloride (NaCl) is purified to remove impurities, such as calcium and magnesium ions, which can interfere with the subsequent reactions.
  2. Ammonia Absorption: Ammonia gas (NH3) is absorbed into the purified brine to form a solution of sodium bicarbonate (NaHCO3).
  3. Formation of Sodium Carbonate: The sodium bicarbonate solution is then heated, causing it to release carbon dioxide (CO2) gas and form sodium carbonate. The reaction is as follows:
    2 NaHCO3 → Na2CO3 + CO2 + H2O
  4. Recovery and Recycling: The carbon dioxide released in the previous step is captured and recycled back into the process to produce more sodium bicarbonate.
  5. Purification and Crystallization: The sodium carbonate solution is purified, concentrated, and crystallized to obtain solid sodium carbonate. The crystals are then dried and packaged for commercial use.

The Solvay process is highly efficient and economical, making it the primary method for large-scale sodium carbonate production worldwide.

Other Methods of Production

Besides the Solvay process, sodium carbonate can also be produced through other methods such as the Leblanc process and the Hou’s process. However, these methods are less commonly used due to environmental concerns and higher production costs.

Frequently Asked Questions (FAQs)

Q1: Is sodium carbonate the same as baking soda?

A1: No, sodium carbonate (Na2CO3) is not the same as baking soda, which is sodium bicarbonate (NaHCO3). While they are both alkaline compounds, they have different chemical compositions and properties. Sodium carbonate is more caustic and has stronger cleaning abilities compared to baking soda.

Q2: Can I use sodium carbonate for cooking?

A2: Sodium carbonate is not recommended for cooking purposes as it is highly alkaline and can cause digestive discomfort or harm if consumed in large amounts. Baking soda (sodium bicarbonate) is the appropriate choice for cooking and baking.

Q3: Is sodium carbonate safe to use in household cleaning?

A3: Sodium carbonate is generally safe to use in household cleaning when handled with proper precautions. However, it is advisable to wear gloves and avoid direct contact with the skin or eyes. It is also essential to keep it out of reach of children and pets.

Q4: Can I substitute washing soda with baking soda?

A4: While both washing soda and baking soda are alkaline compounds, they have different chemical compositions and properties. Washing soda (sodium carbonate) is stronger and more effective in cleaning, while baking soda (sodium bicarbonate) is milder. Consequently, they cannot be used interchangeably in cleaning recipes.

Q5: Where can I buy sodium carbonate?

A5: Sodium carbonate is available in various forms and grades in stores that sell cleaning supplies, such as supermarkets, hardware stores, and online retailers. It is usually sold in powdered or crystalline form, labeled as “soda ash” or “washing soda.”

Q6: Can sodium carbonate be used for pool maintenance?

A6: Sodium carbonate is sometimes used in pool maintenance to raise the pH level of the water. However, it is essential to follow the recommended dosage and consult with pool experts to ensure proper balance and prevent any adverse effects on pool equipment or swimmers.

Q7: Can sodium carbonate be recycled or disposed of safely?

A7: Sodium carbonate can be recycled by chemical manufacturers who can reclaim and reuse it in their production processes. As for disposal, it is important to follow local regulations and guidelines for hazardous waste disposal. In many cases, sodium carbonate can be safely disposed of in designated waste collection centers or facilities.


Sodium carbonate, also known as soda ash, washing soda, or soda crystals, is a versatile compound with various names reflecting its different forms and applications. Whether used in industry, household cleaning, or other fields, sodium carbonate plays a crucial role due to its alkalinity and cleaning properties. Understanding its various names and production methods can help us make informed choices regarding its usage and ensure safety in handling and disposal.

Rate article
Add a comment