3824.99 - Other:
Sub-classifications
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3824 9911 00
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Overview
This category, HTS 3824.99, serves as a residual classification for a wide array of chemical products and preparations not specifically listed elsewhere within Chapter 38. It encompasses mixtures and preparations of natural products, as well as synthetic chemical substances, that do not fit into more precisely defined subheadings. The key criterion for classification here is that the product must be a chemical preparation not elsewhere specified or included, and it must not fall under the more specific categories of prepared binders for foundry molds or cores, nor the specialized glycols and phosphonates found in sibling categories.
Distinguishing this category from its siblings, HTS 3824.91.00.00 and 3824.92.00.00, is crucial. The sibling categories are dedicated to highly specific phosphonate-based mixtures and polygylcol esters of methylphosphonic acid, respectively. Therefore, any chemical product that is not composed primarily of these particular phosphonates or does not consist of polygylcol esters of methylphosphonic acid, but still qualifies as a miscellaneous chemical product, would generally be directed to the more general 3824.99 classification.
The subcategories within HTS 3824.99 provide further refinement for specific types of cultured crystals and other residual chemical preparations. The "Cultured crystals (other than optical elements of chapter 90), weighing not less than 2.5 g each" subheading isolates specific synthetic crystalline materials used for industrial or scientific purposes, provided they meet the weight threshold and are not primarily intended as optical elements. The subsequent "Other" subdivision within this level captures any remaining chemical products and preparations that do not qualify for the more specific cultured crystal designation, continuing the residual nature of the parent category.