HS Code for Quicklime

Quicklime is classified under HS code 2522.10. This classification is situated within Chapter 25, which deals with mineral products like lime and cement. Heading 2522 specifically covers quicklime, slaked lime, and hydraulic lime. Quicklime, or calcium oxide (CaO), is obtained by the calcination of limestone. The HS code 2522.10 is reserved for the commercial grade of quicklime used in industrial applications such as steel manufacturing, water treatment, and chemical production. It is important to note that this heading specifically excludes calcium oxide that is chemically pure. Chemically pure calcium oxide is treated as an inorganic chemical and is classified under Chapter 28. Therefore, the classification in 2522.10 is intended for bulk mineral products rather than laboratory-grade reagents. The distinction is based on the purity level and the intended industrial use of the material, which is a common theme in the transition between Chapter 25 (minerals) and Chapter 28 (chemicals). Proper classification is essential for regulatory compliance, especially regarding the reactive nature of quicklime when exposed to moisture.

Products Included

• Commercial grade quicklime (calcium oxide)
• Burnt lime for industrial use
• Fluxing lime used in metallurgical processes
• Calcinated limestone

Common Misclassification

Quicklime is most often misclassified under HS code 2825.90, which is for chemically pure calcium oxide. It is also sometimes confused with 2522.20, which is the code for slaked lime (calcium hydroxide), or 2522.30 for hydraulic lime.

FAQ

What is the HS code for quicklime?

The HS code for commercial-grade quicklime is 2522.10.

How is quicklime distinguished from pure calcium oxide in the HS system?

Quicklime (2522.10) refers to the industrial mineral product, whereas chemically pure calcium oxide is classified as a chemical under HS code 2825.90.