Understanding the Molecular Weight of Calcium Citrate
Calcium citrate is a widely used compound in dietary supplements and food fortification due to its excellent bioavailability of calcium. Understanding its molecular weight is essential for various applications in chemistry, nutrition, and pharmacology. In this article, we will delve into the molecular weight of calcium citrate, its significance, and its applications.
What is Calcium Citrate?
Calcium citrate is a calcium salt of citric acid, which is commonly found in citrus fruits. It appears as a white, odorless powder and is often used as a dietary supplement for individuals who need an increase in calcium intake. It is particularly beneficial for those who are lactose intolerant or prefer not to consume dairy products.
Molecular Weight of Calcium Citrate
The molecular formula of calcium citrate is C₁₄H₁₁CaO₆. To calculate the molecular weight, we need to sum the atomic weights of all the atoms in the formula:
– Carbon (C): 12.01 g/mol
– Hydrogen (H): 1.008 g/mol
– Calcium (Ca): 40.08 g/mol
– Oxygen (O): 16.00 g/mol
Using the formula C₁₄H₁₁CaO₆:
– Carbon: 14 x 12.01 g/mol = 168.14 g/mol
– Hydrogen: 11 x 1.008 g/mol = 11.088 g/mol
– Calcium: 1 x 40.08 g/mol = 40.08 g/mol
– Oxygen: 6 x 16.00 g/mol = 96.00 g/mol
Now, adding these together:
\[
168.14 + 11.088 + 40.08 + 96.00 = 315.308 \text{ g/mol}
\]
Thus, the molecular weight of calcium citrate is approximately 315.3 g/mol.
Importance of Molecular Weight
Knowing the molecular weight of calcium citrate is crucial for several reasons:
1. Dosage Calculations: In pharmaceutical applications, precise dosage calculations are necessary for efficacy and safety. Understanding the molecular weight helps healthcare professionals determine the correct amount of calcium citrate to prescribe.
2. Nutritional Labeling: For dietary supplements, accurate labeling of the amount of elemental calcium is vital. Calcium citrate typically contains about 21% elemental calcium, so understanding the molecular weight aids in providing accurate nutritional information.
3. Chemical Reactions: In laboratory settings, knowing the molecular weight allows chemists to calculate the required amounts for reactions, ensuring accurate results.
4. Bioavailability Studies: Researching the bioavailability of calcium from different compounds often involves comparing their molecular weights, which can influence absorption rates in the body.
Applications of Calcium Citrate
Calcium citrate is utilized in various fields, including:
– Dietary Supplements: It serves as a source of calcium for bone health and is often recommended for postmenopausal women and individuals at risk for osteoporosis.
– Food Industry: Calcium citrate is added to foods as a calcium fortifying agent and is also used as a preservative and acidity regulator.
– Pharmaceuticals: It is used in formulations that require a calcium source, such as antacids and effervescent tablets.
Conclusion
The molecular weight of calcium citrate, approximately 315.3 g/mol, plays a significant role in its applications across nutrition, pharmaceuticals, and food sciences. Understanding this property is essential for effective dosage calculations, accurate nutritional labeling, and research into its bioavailability. Whether you are a healthcare professional, a researcher, or simply someone interested in dietary supplements, grasping the molecular weight of calcium citrate is fundamental to its effective use and application.
If you’re looking to supplement your diet with calcium citrate, consult with a healthcare provider to determine the appropriate dosage and ensure it fits your individual health needs.