💾 Data Updated: Latest version • Last updated: December 09, 2025

9902.05.28 - Butyl methylphosphinate (CAS No. 6172-80-1) (provided for in subheading 2931.39.00).

Details

FieldValue
Unit of QuantityN/A
General Rate of Duty (Column 1 - General)2.8%
Special Rate of Duty (Column 1 - Special)No change
Column 2 Rate of DutyNo change
Quota QuantityN/A
Additional DutiesN/A
About Duty Rates: Rates are divided into Column 1 and Column 2. Column 1 is subdivided into General (normal trade relations rates for all countries not eligible for special programs) and Special (preferential rates for countries with free trade agreements or preference programs). Column 2 rates apply to products from Cuba, North Korea, Belarus, and Russia. When no special rate exists for a classification, General rates apply.

Overview

This HTS category, 9902.05.28, specifically classifies Butyl methylphosphinate (CAS No. 6172-80-1). This chemical compound falls under Chapter 99, which is reserved for temporary legislation, modifications to trade agreements, and specific import restrictions. The inclusion of the CAS number is critical for precise identification, differentiating it from other phosphinates or related chemical substances that might be classified elsewhere in the HTS.

As this is a leaf node within the HTS database, there are no subcategories. Therefore, the primary focus for classification purposes is to ensure that the imported good precisely matches the chemical name and CAS number provided. Any ambiguity or the presence of other substances would necessitate a review of the foundational classification for Butyl methylphosphinate, which is provided for under subheading 2931.39.00, indicating its original placement within the broader category of organo-inorganic compounds.

The context within Section XXII signifies that this classification is subject to special provisions and potential temporary restrictions. This means that while the chemical identity is fixed, its import status might be governed by specific, time-limited regulations, distinguishing it from permanent classifications found in earlier chapters of the HTS. Importers must be aware of these temporary modifications and any associated documentation requirements that may apply.

Frequently Asked Questions

›What is HTS code 9902.05.28?
HTS code 9902.05.28 covers Butyl methylphosphinate (CAS No. 6172-80-1) (provided for in subheading 2931.39.00). under the US Harmonized Tariff Schedule. It falls under Chapter 99: Temporary legislation; temporary modifications proclaimed pursuant to trade agreements legislation; additional import restrictions proclaimed pursuant to section 22 of the Agricultural Adjustment Act, as amended.
›What products are classified under 9902.05.28?
This classification covers Butyl methylphosphinate (CAS No. 6172-80-1) (provided for in subheading 2931.39.00).. It falls under Chapter 99: Temporary legislation; temporary modifications proclaimed pursuant to trade agreements legislation; additional import restrictions proclaimed pursuant to section 22 of the Agricultural Adjustment Act, as amended.
›What is the import duty rate for 9902.05.28?
The general rate of duty for HTS 9902.05.28 is 2.8%. Special preferential rates may apply: No change. The Column 2 rate is No change.

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