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

9902.05.36 - (4-Morpholinylmethylene)bis(phosphonic acid) (CAS No. 32545-75-8) (provided for in subheading 2931.90.60)

Details

FieldValue
Unit of QuantityN/A
General Rate of Duty (Column 1 - General)Free
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, 9902.05.36, specifically classifies (4-Morpholinylmethylene)bis(phosphonic acid), identified by CAS No. 32545-75-8. This chemical compound, which is primarily used in industrial applications, falls under the purview of temporary legislation and special provisions within Chapter 99 of the Harmonized Tariff Schedule. Its inclusion here signifies a specific, temporary trade modification or restriction, rather than a standard, ongoing tariff classification.

It is crucial to differentiate this specific entry from the vast array of primary commodity classifications found in earlier chapters of the HTS, such as live animals (Chapters 01), dairy products (Chapter 04), or even basic chemicals. While the chemical substance itself might otherwise fall under a subheading like 2931.90.60 within Chapter 29 (Organic Chemicals), its presence in Chapter 99 indicates a special trade status dictated by temporary measures, trade agreements, or specific import restrictions enacted under provisions like Section 22 of the Agricultural Adjustment Act.

As this is a leaf node within the HTS, there are no further subcategories for this specific code. Therefore, the classification is precise and does not branch into more detailed product groupings. Classification professionals should refer to the specific notes and proclamations associated with Chapter 99 to fully understand the implications and requirements for importing or exporting goods designated under this particular HTS code.

Frequently Asked Questions

›What is HTS code 9902.05.36?
HTS code 9902.05.36 covers (4-Morpholinylmethylene)bis(phosphonic acid) (CAS No. 32545-75-8) (provided for in subheading 2931.90.60) 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 9902.05.36?
This classification covers (4-Morpholinylmethylene)bis(phosphonic acid) (CAS No. 32545-75-8) (provided for in subheading 2931.90.60). 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 9902.05.36?
The general rate of duty for HTS 9902.05.36 is Free. Special preferential rates may apply: No change. The Column 2 rate is No change.

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