12butadiene

12butadiene is not a widely recognized chemical name in standard nomenclature. In chemical naming, the word butadiene refers to a four-carbon conjugated diene, with the two most common forms being 1,3-butadiene and the allene isomer 1,2-butadiene. A term like "12butadiene" may be a typographical error, a shorthand for one of these related compounds, or otherwise ambiguous. Because there is no verified entry for 12butadiene in major databases, no definitive structural or property data can be cited for it without a clarifying structural formula or CAS number.

If the intended compound is 1,3-butadiene (CH2=CH-CH=CH2), it is a colorless gas at room temperature with a boiling point of −4.4 °C. It is a fundamental monomer in the production of polybutadiene and styrene-butadiene rubber, among other polymers. It is highly flammable and inhalation or prolonged exposure can pose health risks; the substance is classified as a human carcinogen by several health agencies, with regulatory controls on handling, exposure limits, and transport. Stabilizers or inhibitors are often used in storage to prevent premature polymerization.

If the intended compound is an allene isomer such as 1,2-butadiene (an allene with four carbons), it is less common and markedly more reactive due to the cumulated double-bond system. Allene isomers generally have distinctive reactivity and are studied mainly in theoretical and synthetic organic contexts rather than large-scale industrial use.

In any case, providing a structural diagram or a CAS number would enable a precise, source-backed overview.