HS Code 2835 — Phosphates and Polyphosphates

This category covers inorganic salts of phosphoric acids. They are critical in the manufacture of fertilisers, detergents, and food additives (as emulsifiers or leavening agents in baking).

What's included

Sodium triphosphate (STPP)
Calcium phosphates (DCP/MCP)
Monoammonium phosphate (MAP)
Sodium phosphinate
Potassium phosphates

What's excluded

Natural calcium phosphates → use 2510 (Natural phosphate rock is classified in Chapter 25.)

Common examples

Sodium tripolyphosphate for detergents
Dicalcium phosphate feed grade
Trisodium phosphate (TSP) cleaner
Sodium acid pyrophosphate (SAPP)

Frequently asked questions

Can MAP be in both Chapter 28 and 31?

Yes. HS 2835 is for technical/chemical grades. If used as fertiliser, it belongs in HS 3105.

Trade & shipping notes

Typical duty range: 0.0% - 6.5%
Documentation: Confirm whether the product is for human consumption, animal feed, or industrial use.
Typical shipping mode: FCL | Bulk
Top exporters: China, Morocco, USA, Belgium
Top importers: India, USA, Brazil, Germany

Key takeaway

Widely traded for detergent and food industries; classification often pivots on intended use as fertiliser vs. chemical.

Phosphates and Polyphosphates