Acrylic ester used for polymer manufacturing and as a raw material for
Molar Mass(g/mol): 86.09
Stoichiometric formula: C4H6O2
CAS number: 96-33-3
Methyl acrylate is used primarily for manufacturing homopolymers and
copolymers. Methyl acrylate can be copolymerized for instance with
acrylic acid and its salts, esters and acrylamide, with methacrylic
acid, methacrylates, acrylonitrile, styrene, maleic acid esters, vinyl
acetate, vinyl chloride, butadiene, unsaturated polyesters etc. Methyl
acrylate is an important raw material and a starting material for many
|Appearance, form||Transparent, colorless, clear liquid|
|Odor||Typical, acrid, penetrating|
|Boiling point||80 °C|
|Melting point||(-77) – (-75) °C|
|Vapour pressure at 0°C||3.08 kPa|
|Vapour pressure at 20°C||9.05 kPa|
|Vapour pressure at 50°C||34.0 kPa|
|Flash point (Closed cup)||(-3) – (-2) °C|
|Flash point (Open cup)||2 – 3 °C|
|Explosion limit – upper at 126 °C||19.4 % v/v|
|Autoignition temperature||415 °C|
|Heat of evaporation at boiling point||384 kJ / kg|
|Heat of polymerization||950 kJ / kg|
|Heat of combustion||22504 kJ / kg|
|Specific heat of liquid at 20°C||2.01 kJ / kg.K|
|Density of liquid at 20°C||956 kg / m3|
|Vapour density (air=1)||2.9|
|Coefficient of cubic expansion||1.3 × 10-3|
|Refractive index at 20°C||1.402 – 1.404|
|Viscosity at 0°C||0.63 mPa.s|
|Viscosity at 20°C||0.49 mPa.s|
|Surface tension at 20°C||26 mN / m|
|Solubility ester in water||52 g / l|
|Solubility water in ester||22.5 g / l|
|Electrical conductivity||1.1 × 105 pS / m|
Methyl acrylate is transported in specially equipped railway cars or tanker trucks.
Transport containers are filled to a maximum of 91% of their capacity.
In order to prevent spontaneous polymerization, methyl acrylate must always be stored under air, never under inert gases. The air (oxygen) presence is required for a proper functionality of the stabilizer. Product storage temperature must not exceed 35°C. Under these conditions, a storage stability of one year can be expected. It is advisable to minimize the likelihood of methyl acrylate overstorage by a strict observance of the “first-in-first-out” storage principle. For storage periods extended over one month, it is advisable to replenish the dissolved oxygen content in the product by suitable aeration.
Stainless steel or aluminium is the recommended material for storage tanks and piping. Even though methyl acrylate does not corrode carbon steel, there is a risk of product contamination if corrosion occurs. All metal made equipment (tanks, pumps, piping etc.) must be earthed.
All national laws and directives, as well as local regulations governing storage, handling, distribution and disposal of flammable liquids must be strictly observed. Avoid exposure to high temperatures, sparks, flame, light and frost. Keep separated from oxidizing materials. Keep the container tightly closed.
For additional detailed information see the brochure „SAFE HANDLING AND STORAGE OF ACRYLIC ESTERS“, issued by the European Basic Acrylic Monomers Manufacturers Association (EBAM).
Please refer to the Safety Data Sheet for safety information.
|Methyl acrylate||min. 99.85||%|
|Methyl acetate||max. 0.045||%|
|Methyl propionate||max. 0.06||%|
|Other organic impurities||max. 0.1||%|
|Inhibitor (MEHQ) *||0.001 - 0.002||%|
|Acidity (as Acrylic acid)||max. 0.002||%|
|Appearance||Clear, colorless liquid||-|
|Refractive index **||1.402 – 1.404||-|
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