Diacetone Alcohol

Diacetone Alcohol

AKA “4-HYDROXY-4-METHYL-2-PENTANONE, 123-42-2, 4-Hydroxy-4-methylpentan-2-one, Diacetonalkohol, Diketone alcohol, Diacetonalcohol, Tyranton, Acetonyldimethylcarbinol, Pyranton A”

Ingredient

Ingredient Facts

Diacetone alcohol

AKA: 4-HYDROXY-4-METHYL-2-PENTANONE, 123-42-2, 4-Hydroxy-4-methylpentan-2-one, Diacetonalkohol, Diketone alcohol, Diacetonalcohol, Tyranton, Acetonyldimethylcarbinol, Pyranton A

Ingredient · Solvent · EWG: 1

Synthetic

Solvent

Clean

4-Hydroxy-4-methylpentan-2-one

Solubility Miscible (NIOSH, 2024)

Formula

C6H12O2

Mol. Weight

116.16

CAS #

123-42-2

Form

Liquid

State

Diacetone alcohol appears as a clear colorless liquid with a pleasant odor. Flash point below 141 °F. Less dense than water. Vapors heavier than air.

See origin →

Functions

Solvent

Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.

Perfuming

Dissolves other ingredients

Traditional Use

Organic solvent first synthesized in the late 19th century. Adopted by the cosmetics industry in the mid-20th century as a solvent and humectant to improve product stability and hydration.