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

9902.01.37 - Hydroxylamine sulfate (bis(hydroxylammonium) sulfate) (CAS No. 10039-54-0) (provided for in subheading 2825.10.00)

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 classification specifically addresses Hydroxylamine sulfate, also known as bis(hydroxylammonium) sulfate, identified by CAS No. 10039-54-0. This compound is a salt of hydroxylamine, commonly used in various industrial applications, including as a reducing agent in chemical synthesis, in photography, and in the production of other chemicals. Its inclusion under this specific temporary provision signifies a particular regulatory or tariff treatment, distinct from its primary classification within Chapter 28, subheading 2825.10.00.

Given that this node is a leaf node within Chapter 99, there are no further subdivisions. Therefore, the focus for classification purposes lies in accurately identifying the substance as Hydroxylamine sulfate. This temporary classification supersedes the general classification rules found in other chapters of the Harmonized Tariff Schedule for the specific purposes outlined by the trade agreement legislation or Section 22 proclamations under which this provision is established. Importers must carefully consult the specific trade agreements or proclamations to understand the conditions and requirements associated with this special classification.

Frequently Asked Questions

›What is HTS code 9902.01.37?
HTS code 9902.01.37 covers Hydroxylamine sulfate (bis(hydroxylammonium) sulfate) (CAS No. 10039-54-0) (provided for in subheading 2825.10.00) 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 9902.01.37?
This classification covers Hydroxylamine sulfate (bis(hydroxylammonium) sulfate) (CAS No. 10039-54-0) (provided for in subheading 2825.10.00). 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 9902.01.37?
The general rate of duty for HTS 9902.01.37 is Free. Special preferential rates may apply: No change. The Column 2 rate is No change.
Go up to 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

Stay Updated

Join our newsletter to get all updates of the harmonized Tariff Schedule.