HS Code for High purity silicon

High purity silicon is classified under HS code 2804.61. This classification falls within Chapter 28, which covers inorganic chemicals and precious metals. Specifically, heading 2804 covers hydrogen, rare gases, and other non-metals. Silicon is classified here based on its chemical purity; subheading 2804.61 is reserved for silicon containing not less than 99.99% silicon by weight. This grade of silicon is often referred to as electronic-grade or solar-grade silicon. The classification is straightforward under GRI 1, as the subheading text explicitly defines the purity threshold. It is important to note that this code applies to silicon in its elemental form, typically as polycrystalline chunks, granules, or broken pieces, provided it has not been further processed into electronic components.

Products Included

• Polycrystalline silicon (99.99% purity or higher)
• Electronic grade silicon chunks
• Solar grade silicon granules
• High purity silicon ingots (unworked)
• Ultra-pure silicon powder for chemical vapor deposition

Common Misclassification

The most frequent misclassification is with silicon of lower purity (metallurgical grade), which falls under 2804.69. This lower grade typically contains between 98% and 99.9% silicon. Another critical distinction is between elemental silicon and doped silicon. If the silicon has been doped for use in electronics and is in the form of discs, wafers, or similar shapes, it must be classified under 3818.00. Furthermore, ferrosilicon, an alloy of iron and silicon, is classified in Chapter 72 under heading 7202.

FAQ

What is the HS code for high purity silicon?

The HS code for silicon containing at least 99.99% silicon by weight is 2804.61.

Are silicon wafers classified under 2804.61?

No, silicon wafers that have been doped for electronic use are classified under HS code 3818.00, as they are considered chemical compounds or prepared materials for electronics.