Butyl methacrylate is an organic chemical compound, an ester monomer of methacrylate.

Chemical name ethyl 2-methylprop-2-enoate

Safety
It is considered a skin and eye irritant.
Gatica-Ortega ME, Pastor-Nieto MA, Silvestre-Salvador JF. Allergic Contact Dermatitis Caused by Acrylates in Long-Lasting Nail Polish. Actas Dermosifiliogr (Engl Ed). 2018 Jul-Aug;109(6):508-514. English, Spanish. doi: 10.1016/j.ad.2017.08.010.

What it is used for and where

Cosmetics
Film-forming agent. It produces a continuous ultra-thin film with an optimal balance of cohesion, adhesion and stickiness on the skin or hair to counteract or limit damage from external phenomena such as chemicals, UV rays and pollution.

Fragrance. It plays a very important role in the formulation of cosmetic products as it allows perfume to be enhanced, masked or added to the final product, improving its commercial viability. The consumer always expects to find a pleasant scent in a cosmetic product.

Surfactant - Suspending agent. Cosmetic or pharmaceutical suspensions are known to be thermodynamically unstable and it is therefore essential to include in the formulation a suspending agent capable of dispersing any sedimented particulates and reducing the rate of sedimentation. The presence of this agent increases the consistency of the suspension medium and exerts a protective colloidal action with a surfactant action.
Synonyms: EC number 202-615-1

CAS: 97-88-1