methylmethyl, methylMethyl is the name given to deprotonated methane or to substituents with only one carbon atom.Donate now to keep this information ad-free.DonatePhysical characteristicsMolecular mass N/ADensity N/AMelting point N/ABoiling point N/AFlash point N/AFire point N/ARel. permittivity N/APartition coeff. (logP) N/ACompound added to the database on October 23, 2020, last modified on September 8, 2022.