# HTS 9902.10.40: Mixture of precipitated silica gel (CAS No. 112926-00-8) and (4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyl)oxidanyl (CAS No. 2226-96-2) of a kind used as polymerization inhibitors (provided for in subheading 3815.90.50)

> Plain-language tariff reference from the USITC Harmonized Tariff Schedule on [PlainTariff](https://plaintariff.com/).

## Duty rates

- **General (MFN) rate:** Free
- **Special / FTA rate:** No change
- **Column 2 rate:** No change
- **Corpus rank:** #5222 of 5979 among duty-free tariff lines

## Classification path

- **Section XXII:** [Special Classification Provisions](https://plaintariff.com/section/xxii-special-classification-provisions)
- **HTS code:** 9902.10.40

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*Source: U.S. International Trade Commission Harmonized Tariff Schedule. HTML canonical: https://plaintariff.com/heading/99021040-mixture-of-precipitated-silica-gel-cas-no-112926-00-8-and*