HS Code for Silk cocoons (waste)

The classification for silk waste, including cocoons unsuitable for reeling, is HS code 500300. This code is part of Chapter 50, which governs silk in all its forms. According to the Explanatory Notes to the Harmonized System, silk waste consists of the by-products of the various stages of silk production. This includes cocoons that cannot be reeled because they are broken, stained, or have been perforated by the exit of the silk moth. It also includes yarn waste (such as tangled threads from the reeling process) and garnetted stock (fibers obtained by tearing up silk rags or scraps). The classification is straightforward under GRI 1, as the heading 5003 specifically names silk waste. The distinction between "raw" silk and "waste" silk is vital; raw silk is a primary product intended for high-end textile manufacturing, while waste is often processed into "spun silk" or used for padding. The physical state of the material—whether it is in its natural state, carded, or combed—can affect the sub-classification in some regional tariffs, but 500300 remains the international standard for the base material. Importers must ensure that the cocoons are truly "unsuitable for reeling" to avoid being flagged for misdeclaration of raw silk. This material is frequently used in the production of lower-grade silk yarns or as filling material in high-end bedding and insulation.

Products Included

• Punctured silk cocoons
• Silk noils
• Silk yarn waste
• Garnetted silk stock
• Blaze (silk waste from the outer layer of the cocoon)
• Silk thread scraps

Common Misclassification

The most common misclassification occurs with HS code 500100, which is reserved for silk cocoons that are suitable for reeling. These are high-value, intact cocoons. Another common error is confusing silk waste with raw silk under 500200. Raw silk is the continuous filament thread, whereas 500300 is for discontinuous or damaged fibers. Additionally, if the silk waste has been processed into yarn, it should be classified under 500500 (silk yarn) rather than 500300.

FAQ

What is the HS code for silk cocoons (waste)?

The HS code for silk waste, which includes cocoons unsuitable for reeling, is 500300.

What makes a cocoon "unsuitable for reeling"?

A cocoon is unsuitable for reeling if the continuous filament is broken. This usually happens if the silk moth has emerged, if the cocoon is moldy, or if it was damaged during the harvesting process, preventing the extraction of a single long thread.