What is the chemical formula of sodium citrate?

Aug 06, 2025

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Hey there! As a sodium citrate supplier, I often get asked about the chemical formula of sodium citrate. So, let's dive right into it.

Sodium citrate is a salt of citric acid. There are different forms of sodium citrate, and each has its own chemical formula. The most common forms are trisodium citrate.

Trisodium citrate can exist in both anhydrous and hydrated forms. The anhydrous form of trisodium citrate has the chemical formula Na₃C₆H₅O₇. This means it consists of three sodium (Na) atoms, six carbon (C) atoms, five hydrogen (H) atoms, and seven oxygen (O) atoms.

When it comes to the hydrated form, the most common one is trisodium citrate dihydrate. Its chemical formula is Na₃C₆H₅O₇·2H₂O. The “·2H₂O” part indicates that there are two water molecules associated with each unit of trisodium citrate. These water molecules are part of the crystal structure of the compound.

Now, you might be wondering why there are different forms and what they're used for. Well, the anhydrous form, with the formula Na₃C₆H₅O₇, is often preferred in applications where water content needs to be minimized. It's used in a variety of industries. For example, in the food and beverage industry, it acts as a buffering agent, emulsifier, and preservative. You can find it in things like cheese, where it helps maintain the texture and prevent separation. It's also used in soft drinks to adjust the acidity and improve the taste.

Tri Sodium Citrate Chemical2

The hydrated form, trisodium citrate dihydrate (Na₃C₆H₅O₇·2H₂O), is also widely used. In the pharmaceutical industry, it's used as an anticoagulant in blood collection tubes. It works by binding to calcium ions in the blood, which prevents blood from clotting. This is crucial for accurate blood testing. It's also used in some medical treatments to alkalize the urine and treat certain metabolic disorders.

As a supplier, I know that the quality of sodium citrate is super important. That's why we make sure to provide high - quality products. We have different grades of sodium citrate available, depending on your specific needs.

If you're interested in learning more about specific products, you can check out these links. Sodium Citrate Sigma offers a great option for those looking for a reliable source of sodium citrate. It's known for its purity and consistency.

For larger quantities, our Anhydrous Trisodium Citrate 25kg is a popular choice. It's perfect for industrial applications where you need a significant amount of the product.

And if you're looking for a general - purpose tri sodium citrate, Tri Sodium Citrate Chemical is a great option. It can be used in a wide range of industries, from food to pharmaceuticals.

The properties of sodium citrate are what make it so useful. It's a white, crystalline powder that's odorless and has a slightly salty and cooling taste. It's highly soluble in water, which makes it easy to use in various formulations.

In the laboratory, sodium citrate is often used in biochemical research. It can be used to prepare buffers, which are solutions that resist changes in pH. This is important because many biological reactions are sensitive to pH. By using sodium citrate buffers, researchers can maintain a stable pH environment for their experiments.

In the cosmetic industry, sodium citrate is used in some skin - care products. It can act as a chelating agent, which means it binds to metal ions in the product. This helps prevent the oxidation of other ingredients and extends the shelf - life of the product.

If you're in the market for sodium citrate, whether it's for a small - scale project or a large - scale industrial application, we've got you covered. We can provide you with the right type of sodium citrate, whether it's the anhydrous form or the hydrated form, in the quantity you need.

We understand that every customer has different requirements. That's why we offer customized solutions. If you need a specific grade of sodium citrate or a particular packaging size, just let us know. We'll work with you to meet your needs.

So, if you're interested in purchasing sodium citrate, don't hesitate to get in touch. We're here to answer any questions you might have and help you find the best product for your application. Whether you're a food manufacturer, a pharmaceutical company, or a researcher, we can provide you with high - quality sodium citrate at competitive prices.

In conclusion, sodium citrate is a versatile compound with different forms and a wide range of applications. Its chemical formula, whether it's Na₃C₆H₅O₇ for the anhydrous form or Na₃C₆H₅O₇·2H₂O for the dihydrate form, determines its properties and uses. As a supplier, we're committed to providing the best products and services to our customers. So, if you're looking for sodium citrate, reach out to us and let's start a great business relationship.

References

  • Handbook of Food Additives
  • Pharmaceutical Excipients Handbook
  • Biochemical Research Methods Manual