2-Methyl-2,4-pentanediol (MPD) is an organic compound with the formula (CH3)2C(OH)CH2CH(OH)CH3. This colourless liquid is a chiral diol. It is produced industrially from diacetone alcohol by hydrogenation.Total European and USA production was 15000 tonnes in 2000.
2-Methyl-PPD is primarily used as a precursor in permanent hair dyes. It acts as an important oxidizing agent and developer in the formation of color when combined with other chemicals in hair dye formulations