Tert-Butyl Methyl Ether (MTBE).

INCI name: Tert-Butyl Methyl Ether.

Function: Solvent

Origin: Synthetic.

Concentration allowed by European regulations : Not regulated.

Where to find it / them? : /

Risks to health: Suspected endocrine disruptor, potential skin irritant.

Risks to the environment : Persistent pollutant, environmental toxicity, air contamination.

More information : Classified in group 3 (unclassifiable as to its carcinogenicity to humans) by the IARC (International Agency for Research on Cancer).