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Isobutane, if it contains = >0,1% w/w Butadiene

CAS 75-28-5 · EC 200-857-2

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What it is + why it's regulated

Isobutane is a gas commonly used as a propellant in aerosol products like hairspray, deodorant, and shaving cream. However, the EU regulates a specific form of isobutane that contains more than 0.1% butadiene, a chemical impurity. Butadiene is a concern because the International Agency for Research on Cancer (IARC) classifies it as Group 2A (probably carcinogenic to humans). To protect consumers, the EU Cosmetic Regulation Annex II bans this impure isobutane from all cosmetic products sold in the European Union. This means manufacturers must ensure their isobutane propellant meets strict purity standards. The ban applies to any cosmetic product containing isobutane with butadiene levels above the 0.1% threshold. This rule helps reduce potential long-term health risks from everyday products. Source: EU CosIng database (https://ec.europa.eu/growth/tools-databases/cosing/). This summary draws on public regulatory data; the linked source is authoritative.

Regulation: (EC) No 1223/2009

Authoritative source

Issuing body: EU Cosmetic Regulation Annex II (banned in cosmetics)
Primary register: https://ec.europa.eu/growth/tools-databases/cosing/

Always verify each fact at the primary register before acting on it.

What this is NOT

ProductGuru is an INDEX of public regulatory data, not a primary source. This page is not medical, occupational-health, or legal advice. Every claim above is drawn from the issuing-agency register linked. Inclusion in our index is not endorsement, condemnation, or hazard assessment.

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