Specifications Table

Product Name – Citric Acid, Anhydrous LR
Quantity/Pack Size – 500 g
Form – White crystalline powder
Grade – Laboratory Reagent (LR)
Application – pH adjustment, chelating agent, biochemical assays

Product Overview

Citric acid anhydrous LR is a high-purity, water-free crystalline compound widely used in laboratory settings for its consistent acidity and chelating properties. This laboratory reagent grade product meets stringent quality standards, ensuring minimal impurities and reliable performance in sensitive applications. The anhydrous form provides a stable, non-hygroscopic powder that resists clumping, making it ideal for precise weighing and solution preparation. With a molecular formula of C6H8O7 and a molecular weight of 192.12 g/mol, this citric acid variant offers superior solubility in water (592 g/L at 20°C) and alcohol, enabling versatile use across different experimental protocols. The product’s 99.5% minimum purity guarantees accurate results in analytical procedures, while its low heavy metal content (<5 ppm) prevents interference in trace analysis. Packaged in airtight containers to maintain stability, this citric acid maintains its efficacy throughout its shelf life when stored under recommended conditions.

FAQs

1. What is the difference between anhydrous and monohydrate citric acid?

Anhydrous citric acid contains no water molecules in its crystal structure, offering higher purity and stability for applications where moisture content could interfere with results. It’s particularly preferred in analytical chemistry where precise concentrations are critical.

2. Can this citric acid be used for preparing buffer solutions?

Yes, this LR grade anhydrous citric acid is excellent for preparing buffer solutions due to its consistent pKa values (3.13, 4.76, 6.40) and high purity, which ensures reliable pH control across a wide range.

3. What storage conditions are recommended for maintaining product quality?

Store in a cool, dry place below 30°C in tightly sealed original containers. Keep away from direct sunlight and moisture to prevent degradation or caking of the powder.

4. Is this product compatible with common lab solvents?

The product is highly soluble in water and ethanol, moderately soluble in ether, and insoluble in chloroform, making it compatible with most aqueous-based laboratory procedures.

5. What safety precautions should be taken when handling this chemical?

While generally safe, wear appropriate PPE including gloves and goggles when handling. Avoid inhalation of dust and ensure proper ventilation in the workspace as it may cause mild irritation to skin and eyes.