MIBK — Duck Heart Ghost

MIBK

AKA “4-Methyl-2-pentanone, METHYL ISOBUTYL KETONE, 4-Methylpentan-2-one, Isopropylacetone, Isobutyl methyl ketone, Hexone, 2-Pentanone, 2-Methyl-4-pentanone”

Synthetic

Ingredient Facts

MIBK

AKA: 4-Methyl-2-pentanone, METHYL ISOBUTYL KETONE, 4-Methylpentan-2-one, Isopropylacetone, Isobutyl methyl ketone, Hexone, 2-Pentanone, 2-Methyl-4-pentanone

Synthetic · Denaturant · EWG: 4

Synthetic

Fragrance

Solvent

Synthetic

Clean

A lightweight solvent that helps dissolve and blend formula ingredients together, while also carrying subtle fragrance notes through the product.

Solubility 1 to 5 mg/mL at 70 °F (NTP, 1992)

Formula

C6H12O

Mol. Weight

100.16

CAS #

108-10-1

Form

Liquid

State

Methyl isobutyl ketone appears as a clear colorless liquid with a pleasant odor. Flash point 73 °F. Less dense than water. Vapors heavier than air.

See origin →

Functions

Denaturant

Perfuming

Added for scent. Can be natural or synthetic. Common irritant and allergen — one of the top reasons people react to products.

Solvent

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

Makes Alcohol Undrinkable

Adds Fragrance

Dissolves Ingredients

Locks In Moisture

Adds pleasant scent

Dissolves other ingredients

Traditional Use

Methyl isobutyl ketone, a synthetic solvent developed in the early 20th century. Used in cosmetics manufacturing and historically in nail products, largely phased out due to toxicity concerns.