HS Code for Drying agents

HS code 321100 is designated for "Prepared driers," which are chemical substances added to paints, varnishes, and printing inks to accelerate the drying process through oxidation or polymerization. These are distinct from desiccants used for moisture absorption in packaging. Chapter 32 deals with tanning or dyeing extracts, pigments, and other coloring matter, including paints and varnishes. Prepared driers are essential additives in the coatings industry. They typically consist of metallic soaps (like cobalt, manganese, or lead naphthenates) dissolved in a solvent or dispersed in a carrier. The classification under 321100 requires the product to be a "prepared" mixture specifically intended for use as a drier in the paint and varnish industry, rather than a pure chemical element or simple compound found in Chapter 28 or 29. This code is vital for the chemical industry to track additives that modify the physical properties of coatings during application.

Products Included

• Cobalt naphthenate prepared driers
• Manganese-based drying agents for oil paints
• Lead-free metallic soap driers
• Zinc or calcium driers used as auxiliary agents
• Mixed metal driers in liquid or paste form

Common Misclassification

A common point of confusion is the term "drying agent." In a general context, this often refers to desiccants like silica gel or calcium chloride. However, silica gel is classified under 382499 (as a chemical product) or 281122 (as silicon dioxide), and calcium chloride falls under 282720. HS code 321100 is strictly for paint/varnish driers. Another misclassification occurs with 3806, which covers rosin and resin acids, or 3212, which covers pigments dispersed in non-aqueous media. If the product is a raw metallic salt not yet "prepared" as a drier, it belongs in Chapter 28.

FAQ

What is the HS code for drying agents?

If the drying agent is a prepared drier for paints or varnishes, the HS code is 321100. If it is a desiccant for moisture control, it is likely 382499.

Are pure metallic salts included in 321100?

No, pure metallic salts or defined chemical compounds are classified in Chapter 28. 321100 is reserved for prepared mixtures or solutions used specifically as driers.