2-ethylhexyl methacrylate

CAS: 688-84-6

Overview

2-Ethylhexyl methacrylate (CAS 688-84-6 ), commonly abbreviated as 2-EHMA, is a long-chain acrylic monomer used to modify the flexibility, adhesion, and glass transition temperature of polymer systems.

It functions as a reactive building block in emulsion and solution polymerization, allowing formulators to tune end-product performance without the need for post-processing plasticizers.

In coatings and printing inks, 2-EHMA is copolymerized to improve film flexibility and substrate adhesion, particularly on flexible packaging substrates used in industrial applications.

Adhesive formulators incorporate it into pressure-sensitive and structural adhesive systems where low-temperature performance and tack balance are critical for high-performance bonding.

In personal care, it appears in film-forming polymer systems used in nail coatings and hair fixatives, where controlled softness and durability are required for consumer products.

Plastics compounders use it as a reactive softening comonomer to reduce brittleness in acrylic-based materials without sacrificing clarity or processability during manufacturing.

2-Ethylhexyl methacrylate is supplied as a clear liquid, typically with an inhibitor such as MEHQ added for storage stability and to prevent premature polymerization during transit.

Technical grade is the standard commercial offering, with purity specifications commonly at 98% or higher. Bulk supply is available in drums and IBC containers for industrial use.

Physical Properties

Melting Point	-50 °C
Boiling Point	110 °C @ Press: 14 Torr
Density	0.880 g/cm³ @ Temp: 25 °C
Flash Point	198 °F
Appearance	colourless liquid
Color	Colorless
Odor	Ester like odour
Form	Liquid
Water Solubility	<0.1 g/L
Vapor Pressure	0.13 hPa (20 °C)
Refractive Index	n 20/D 1.438(lit.)
Log P	4.95 at 20℃

Safety & Handling

Warning GHS07 GHS08 GHS09 Hazard Statements H227 Combustible liquid H315 Causes skin irritation H317 May cause an allergic skin reaction H319 Causes serious eye irritation H320 Causes eye irritation H335 May cause respiratory irritation H361 Suspected of damaging fertility or the unborn child H401 Toxic to aquatic life H411 Toxic to aquatic life with long lasting effects H412 Harmful to aquatic life with long lasting effects Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P391 Collect spillage. P403 Store in a well-ventilated place. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code	29161290
UN Number	3334
Storage Class	10 - Combustible liquids
WGK (Germany)	1

Other Names

Industries

Personal Care & Cosmetics Printing & Packaging Plastics & Polymers