Safety Reference
Danger
H225Highly flammable liquid and vapour
H302
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 542-56-3
Butyl iodide
Organic synthesis intermediate
Isobutyl nitrite is an industrial chemical and chemical intermediate that has also been used as an illicit inhalant. The National Toxicology Program has identified it as a substance that can cause cancer.
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 ISOBUTYL NITRITE (CAS 542-56-3) is 2920.90.
2920.90
2920 90 70
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
2-methylpropyl nitrite
APNSGVMLAYLYCT-UHFFFAOYSA-N
CC(C)CON=O