Description

Testing Standards

Understanding Citric Acid (Anhydrous and Monohydrate)

Citric acid is a naturally occurring acid with the molecular formula C₆H₈O₇. Available in different forms such as anhydrous citric acid and monohydrate citric acid, it is widely used in various industries. This compound is recognized by its CAS No. 77-92-9 for the anhydrous form and CAS No. 5949-29-1 for the monohydrate form, with an EINECS number of 201-069-1. It typically appears as a colorless or white crystalline powder known for its high purity, usually ≥ 99.5%.

Applications of Citric Acid

Citric acid serves multiple purposes, such as being a feed acidifier and a food preservative. In the animal feed industry, it functions as an acidifier, enhancing gut health and improving nutrient absorption. As a citric acid flavor enhancer, it adds a pleasant tartness to food products. Furthermore, it acts as an antioxidant within the pharmaceutical sector, contributing to the formulation of various health products. Depending on its intended use, citric acid is available in different grades—feed grade citric acid, food grade citric acid, and pharmaceutical grade citric acid.

Citric Acid Specifications and Testing Standards

For quality assurance, citric acid undergoes rigorous testing to meet specific citric acid testing standards. The citric acid assay mandates a purity of ≥ 99.5%, confirming its high quality for various applications. Its moisture content varies between the anhydrous and monohydrate forms, where the latter contains 7.5%-9.0% moisture, while the anhydrous form has ≤ 1%. Additional tests ensure low concentrations of impurities such as sulfate (≤ 0.015%), oxalate (≤ 0.01%), and heavy metals (Pb ≤ 10 ppm), with arsenic levels kept at ≤ 1 ppm.

Citric Acid Storage and Shelf Life

Proper citric acid storage is crucial to maintain its quality and extend its shelf life. It should be stored in a tightly closed container, placed in a cool, dry, and well-ventilated area, away from moisture and direct sunlight. Under these conditions, citric acid can have a shelf life of up to 24 months.

Packaging Options

Typically, citric acid is available in 25kg bags. However, customized citric acid packaging is available upon request to meet specific requirements or preferences.

Explore Related Compounds

For further exploration into related substances, consider our other products such as: Fumaric Acid, Malic Acid (DL-Malic Acid / L-Malic Acid), and Lactic Acid. Each offers unique benefits for industrial and consumer applications.

In understanding the versatility and utility of citric acid, from its various forms and grades to its wide range of applications, one can appreciate its integral role in enhancing health, flavor, and preservation in numerous products.