# Argon: Regulation

Tied to oxygen, with helium and CO2 as backups

Source page: https://www.materialinsights.org/chemicals/argon/regulation/

What this tab covers How it is regulated and what could disrupt supply: hazard classification, rules in the EU, US and India, anti-dumping duties and other trade measures, and supply-risk notes.

#### Hazards

| Classification | UN number | Key risks |
|---|---|---|
| Gas under pressure; simple asphyxiant | UN1006 | Asphyxiation in low-lying confined spaces; cold burns from liquid. |

#### Main rules

| Where | Rule | Effect |
|---|---|---|
| **US** | Tariff 3.7% ad valorem on argon (HTS 2804.21.0000) | minor |
| **EU** | ADR transport; Pressure Equipment Directive | transport and equipment safety |

#### India

| Rule | Effect |
|---|---|
| **Gas Cylinders Rules 2016 and SMPV(U) Rules 2016 under PESO** | storage and transport licensing |

#### Trade measures

- US tariff 3.7% (USGS 2026)
- Russia and Ukraine rare gas supply limited by war (USGS 2026)

#### Supply risk

Supply is tied to oxygen production, so steel or ammonia shutdowns cut argon. Not on critical lists; substitutes (helium, nitrogen, CO2 blends) exist for many uses (USGS).

## Other sections

- [Summary](https://www.materialinsights.org/chemicals/argon/index.md)
- [Overview](https://www.materialinsights.org/chemicals/argon/overview/index.md)
- [Correlation](https://www.materialinsights.org/chemicals/argon/correlation/index.md)
- [Production route](https://www.materialinsights.org/chemicals/argon/routes/index.md)
- [Production](https://www.materialinsights.org/chemicals/argon/production/index.md)
- [Feedstocks](https://www.materialinsights.org/chemicals/argon/feedstocks/index.md)
- [Cycles](https://www.materialinsights.org/chemicals/argon/cycles/index.md)
- [Trading](https://www.materialinsights.org/chemicals/argon/trading/index.md)
- [Movement](https://www.materialinsights.org/chemicals/argon/movement/index.md)
- [Characteristics](https://www.materialinsights.org/chemicals/argon/characteristics/index.md)
- [Emissions](https://www.materialinsights.org/chemicals/argon/emissions/index.md)
- [Relationships](https://www.materialinsights.org/chemicals/argon/links/index.md)