| comparative analytical and toxicological assessment of methylcyclohexanemethanol (mchm) mixtures associated with the elk river chemical spill. | on january 9, 2014, a chemical mixture containing crude methylcyclohexanemethanol (mchm) contaminated the water supply of charleston, west virginia. although the mixture was later identified as a mix of crude mchm and stripped propylene glycol phenyl ethers, initial risk assessment focused on 4-mchm, the predominant component of crude mchm. the mixture's exact composition and the toxicity differences between 4-mchm, crude mchm, and the tank mixture were unknown. we analyzed the chemical composit ... | 2017 | 28917212 |