3-Methoxy-3-methylbutyl acetate

3-Methoxy-3-methylbutyl acetate, commonly known as MMB-AC or Solfit Ac, is a glycol ether ester solvent with CAS number 103429-90-9 and EC number 700-408-5. It carries no assigned E-code. The compound belongs to the broader category of oxygenated solvents and is also referenced under the name 3-methoxyisobutyl acetate.

In personal care formulations, MMB-AC functions as a carrier solvent, dissolving film-forming polymers and active ingredients while supporting controlled evaporation rates on skin or hair. In printing and packaging applications, it aids ink dissolution and flow by maintaining resin solubility across a range of substrate temperatures, contributing to consistent print quality.

MMB-AC is supplied as a liquid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm supplier SDS documentation and purity specifications prior to sourcing. Standard industrial packaging formats apply; buyers should request grade certificates directly from the supplier.