---
title: "2809 – Diphosphorus pentaoxide; phosphoric…: Canada tariff & duty rates"
description: "Every Canadian tariff classification under HS 2809: Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined…"
canonical: "https://www.adhocs.ca/hs-codes/2809"
---

# 2809 Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined.

Up: [HS codes](https://www.adhocs.ca/hs-codes) › [Chapter 28](https://www.adhocs.ca/hs-codes/28)

2 subheadings. Each subheading links to its page, which lists its 10-digit codes, or to its only 10-digit code.

- [2809.10.00.00](https://www.adhocs.ca/hs-codes/2809.10.00.00) Diphosphorus pentaoxide
- [2809.20](https://www.adhocs.ca/hs-codes/2809.20) Phosphoric acid and polyphosphoric acids

## Other headings in this chapter

- Previous: [2808](https://www.adhocs.ca/hs-codes/2808) Nitric acid; sulphonitric acids.
- Next: [2810](https://www.adhocs.ca/hs-codes/2810) Oxides of boron; boric acids.

[Source: CBSA Customs Tariff](https://www.cbsa-asfc.gc.ca/trade-commerce/tariff-tarif/menu-eng.html).