- 2-Propenoic acid, methyl ester
- Acrylic acid, methyl ester
- Methyl propenoate
Clear, colorless liquid with a pungent, acrid odor. Lachrymator.
Production of acrylic & modacrylic fibers, used as a comonomer with acrylonitrile in such fibers.
Registry Numbers and Inventories.
EC Index Number
Highly flammable; Harmful; Irritant; Sensitising
R 11 20/21/22 36/37/38 43
S 9 25 26 33 36/37 43
Tumorigen; Mutagen; Human Data; Primary Irritant
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
87 (25 C)
Vapor density (air=1)
11.3% at 25 C
3.5 (butyl acetate = 1)
Odor Threshold Odor threshold 0.017 mg/m3
0.9739 g/cm3 (0 C)
Solubility in water
0.482 cp @ 20C
1.3959 (20 C)
7.04 (25 C)
Partition coefficient, pKow
Heat of vaporization
Heat of combustion
Hazards and Protection.
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator/flammables. Do not store under inert atmosphere. Separate from oxidizing materials. Inhibitor level should be checked periodically.
B2 D1A D2B E F
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to disperse vapors and dilute standing pools of liquid.
Stable only if stored and handled under recommended conditions. The stability of the product depends upon the availability of both dissolved oxygen and MEHQ inhibitor(CAS=150-76-5). The presence of oxygen is necessary for the MEHQ to function effectively. The product should never be stored under an inert gas atmosphere, but should always be stored under an atmosphere containing 5-21% oxygen by volume.
Strong oxidizing agents, strong acids, peroxides, strong alkalies.
When heated to decompisition it emits acrid smoke and irritating fumes.
Upper exp. limit, %
Lower exp. limit, %
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may spread fire. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide.
Flammable liquid and vapor.
Liquid floats on water and may travel to a source of ignition and spread fire. Methyl acrylate, inhibited vapor is heavier than air and may travel a considerable distance to source of ignition and flash back.
Irritating vapors are generated in fires.
OSHA PEL: TWA 10 ppm (35 mg/m3) skin NIOSH REL: TWA 10 ppm (35 mg/m3) skin NIOSH IDLH: 250 ppm
Paresthesia have been reported. Headache, irritability, drowsiness and dizziness may occur. There is no evidence of methyl methacrylate-induced teratogenicity in humans but there are conflicting reports in animals.
Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
May cause respiratory tract irritation. Inhalation of methyl acrylate vapor or mist may cause headache, nausea, vomiting, confusion, dizziness, and unconsciousness. High exposure can cause pulmonary edema (accumulation of fluid in the lungs).
May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. Exposure may cause irritation and possible burns. May be harmful if absorbed through the skin.
Causes eye irritation. May result in corneal injury. Lachrymator (substance which increases the flow of tears).
DO NOT INDUCE VOMITING. Volatile chemicals have a high risk of being aspirated into the victim's lungs during vomiting which increases the medical problems. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. IMMEDIATELY transport the victim to a hospital.
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.