Ammonium Tetramolybdate

Ammonium tetramolybdate (NH4)2Mo4O13 is utilized in flame retardants and corrosion inhibitors. It qualifies for HTS 2841.70.10.00 as a peroxometallic/oxometallic salt of ammonium per HTS hierarchy.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China4.3%+10.0%14.3%
🇲🇽Mexico4.3%+10.0%14.3%
🇨🇦Canada4.3%+10.0%14.3%
🇩🇪Germany4.3%+10.0%14.3%
🇯🇵Japan4.3%+10.0%14.3%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2842.90Lower: 13.3% vs 14.3%

If complex salts with other metals

Double/complex salts including molybdates classified in 2842 per Chapter note.

3206.50.00.00Higher: 41.5% vs 14.3%

If used as luminophores

Inorganic luminophores excluded from Chapter 28 and go to 3206.

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Import Tips & Compliance

Include molecular formula on labels for customs verification; test for heavy metal impurities

Avoid pitfall: classifying as organo-inorganic per Chapter 28 exclusion