Citrate salts are salts of citric acid in which one or more acidic hydrogen ions are replaced by mineral ions such as sodium (Na), potassium (K), or magnesium (Mg). They are widely used in food, beverage, pharmaceutical, nutraceutical, cosmetic and industrial formulations.
For Swasti Exports, these can be positioned as a Citrate Salts / Mineral Citrates product family.
1. Sodium Citrate
Sodium Citrate is the sodium salt of citric acid. The commonly referenced trisodium citrate has CAS 68-04-2, formula C₆H₅Na₃O₇, and molecular weight 258.07 g/mol.
Key properties
- White crystalline powder or granules
- Freely soluble in water
- Provides buffering and pH-control functionality
- Used as a sodium source in appropriate formulations
Applications
- Food & beverages
- Buffer systems
- Pharmaceutical formulations
- Nutraceuticals
- Dairy and processed-food applications
- Cosmetic formulations
- Laboratory applications
Important: Sodium citrate also exists in hydrated forms, so the CAS number and molecular weight should match the exact form you are selling.
2. Potassium Citrate
Potassium Citrate is the tripotassium salt of citric acid.
The anhydrous form is CAS 866-84-2, formula C₆H₅K₃O₇, molecular weight 306.39 g/mol.
The monohydrate form is CAS 6100-05-6, formula C₆H₇K₃O₈, molecular weight 324.41 g/mol.
Key properties
- White crystalline powder/granules
- Water soluble
- Supplies potassium
- Used for buffering and formulation purposes
Applications
- Pharmaceutical formulations
- Nutraceutical/mineral supplements
- Food & beverages
- Buffer systems
- Electrolyte formulations
- Selected cosmetic and personal-care applications
For your website, I recommend listing Potassium Citrate Anhydrous and Potassium Citrate Monohydrate separately if you supply both.
3. Magnesium Citrate
Magnesium Citrate is a magnesium salt of citric acid. It is more complicated than sodium and potassium citrate because different magnesium-citrate compositions and hydration states are commercially encountered.
One important form is trimagnesium dicitrate, CAS 3344-18-1, formula C₁₂H₁₀Mg₃O₁₄, molecular weight 451.12 g/mol.
Other magnesium citrate compositions/hydrates are also documented, so your actual supplier specification/COA should determine the formula, CAS and molecular weight printed on the product page.
Applications
- Nutraceutical and mineral formulations
- Pharmaceutical applications
- Food ingredient applications
- Beverage formulations
- Personal-care formulations
- Laboratory/research applications
What citrate salts do
A simple way to understand their commercial function:
Citric Acid → reacts with a mineral → Citrate Salt
For example:
Citric Acid + Sodium → Sodium Citrate
Citric Acid + Potassium → Potassium Citrate
Citric Acid + Magnesium → Magnesium Citrate
The resulting salts can provide buffering, mineral delivery, formulation stability and other functional properties, depending on the specific citrate and application.
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