3105.40.00.50—Ammonium dihydrogenorthophosphate (Monoammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (Diammonium phosphate), other
General
Free
Units
t
Column 2
Free
Special
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Plain-English explanation
HTS 3105.40.00.50 is the U.S. Harmonized Tariff Schedule classification for Ammonium dihydrogenorthophosphate (Monoammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (Diammonium phosphate), other. It's a 10-digit statistical line in Chapter 31: Fertilizers, Section VI: Products of the Chemical or Allied Industries, used by U.S. Customs and Border Protection to determine the duty rate at entry. 2 active AD/CVD orders flag this code.
New to HTS codes? Read our guide on how HTS classification works →
Potentially applicable AD/CVD orders(2)
Active orders that may apply to imports under this HTS code. HTS coverage is advisory — actual scope depends on each order's product description. Run the AD/CVD lookup → to check whether your specific shipment is in scope.
Frequently asked questions
What is HTS code 3105.40.00.50?
HTS 3105.40.00.50 is the U.S. Harmonized Tariff Schedule classification for Ammonium dihydrogenorthophosphate (Monoammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (Diammonium phosphate), other. It belongs to Chapter 31 of the HTSUS.
What is the general duty rate for HTS 3105.40.00.50?
The general (Column 1) duty rate for HTS 3105.40.00.50 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
Are there Section 301 or Section 232 tariffs on HTS 3105.40.00.50?
No active Chapter 99 tariff overlays (Section 301, Section 232, IEEPA reciprocal, etc.) currently flag HTS 3105.40.00.50 in Tandom's catalog. Use the calculator's date + origin inputs to confirm against any retroactive overlay you may be filing.
Does HTS 3105.40.00.50 have any antidumping or countervailing duty (AD/CVD) orders?
Yes — 2 AD/CVD orders flag this code: C-821-825 (CVD, Russia), C-714-001 (CVD, Morocco). Open the code page for deposit rates, scope determinations, and the linked case lookups.
Learn more
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