---
title: "3913 – Natural polymers (for example, alginic…: Canada tariff & duty rates"
description: "Every Canadian tariff classification under HS 3913: Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened…"
canonical: "https://www.adhocs.ca/hs-codes/3913"
---

# 3913 Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms.

Up: [HS codes](https://www.adhocs.ca/hs-codes) › [Chapter 39](https://www.adhocs.ca/hs-codes/39)

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

- [3913.10.00.00](https://www.adhocs.ca/hs-codes/3913.10.00.00) Alginic acid, its salts and esters
- [3913.90](https://www.adhocs.ca/hs-codes/3913.90) Other

## Other headings in this chapter

- Previous: [3912](https://www.adhocs.ca/hs-codes/3912) Cellulose and its chemical derivatives, not elsewhere specified or included, in primary forms.
- Next: [3914](https://www.adhocs.ca/hs-codes/3914) Ion-exchangers based on polymers of headings 39.01 to 39.13, in primary forms.

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