Safety Reference
Danger
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
CAS 7446-09-5
Sulfur dioxide is a colorless gas with a pungent odor, naturally released by volcanic activity and produced as a by-product of metals refining and the burning of sulfur-bearing hydrocarbon fuels. It is primarily used as an industrial chemical for smelting and refining processes.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
The international HS code for Sulfur dioxide (CAS 7446-09-5) is 2811.29.
2811.29
2811 29 05
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
sulfur dioxide
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