Product Identification

Product Name

MMA

Synonyms

Acryester M
Diakon
Methacrylic acid, methyl ester
Methyl 2-methyl-2-propenoate
Pegalan

CAS

80-62-6

Formula

C5H8O2

Molecular Weight

100.12

EINECS

201-297-1

RTECS

OZ5075000

RTECS Class

Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant

Merck

12,6005

Beilstein/Gmelin

605459

Beilstein Reference

4-02-00-01519

EC Index Number

607-035-00-6

EC Class

Highly flammable; Irritant; Sensitising

Physical and Chemical Properties

Appearance

Clear, colorless liquid with a fragrant, fruity or pungent, acrid odor.

Solubility in water

15.9 g/L (20 C)

Melting Point

-48

Boiling Point

100

Vapor Pressure

39 (25 C)

Density

0.9491 g/cm3 (15 C)

Partition Coefficient

1.38

Heat Of Vaporization

32.28 kJ/mol

Heat Of Combustion

-2704 kJ/mol

Usage

Monomer for polymethacrylate resins, impregnation of concrete.

Vapor Density

3.6

Saturation Concentration

3.8% at 20 C

Odor threshold

0.05 ppm

Refractive Index

1.4168 (15.6 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.

Skin

Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. After opening, purge container with nitrogen before reclosing. Periodically test for peroxide formation on long-term storage. Addition of water or appropriate reducing materials will lessen peroxide formation.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Ground and bond containers when transferring material. Avoid contact with skin and eyes. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid ingestion and inhalation. If peroxide formation is suspected, do not open or move container. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Hazards Identification

Inhalation

Inhalation of vapors irritates the respiratory tract. Symptoms from overexposure can include coughing, chest pain, headache, drowsiness, nausea, anorexia, irritability and narcosis. Very high levels may cause pulmonary edema and death. This material has been linked to cardiac arrest and other cardiovascular problems because of its ability to lower the blood pressure.

Skin

Causes irritation to skin. Symptoms include redness, itching, and pain. May cause allergic skin reactions. May be absorbed through the skin.

Eyes

Causes irritation, redness, and pain.

Ingestion

Harmful if swallowed. May cause diarrhea, nausea and vomiting. Swallowing produces acute systemic effects paralleling ingestion. Ingestion has been linked to liver and kidney damage.

Hazards

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Material is lighter than water and a fire may be spread by the use of water. May polymerize explosively when involved in a fire. Containers may explode when heated.

EC Risk Phrase

R 11 37/38 43

EC Safety Phrase

S 24 37 46

UN (DOT)

1247

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

A half-face organic vapor respirator may be worn for up to ten times the exposure limit, or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. A full-face piece organic vapor respirator may be worn up to 50 times the exposure limit, or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. For emergencies or instances where the exposure levels are not known, use a full-face piece positive-pressure, air-supplied respirator.

Exposure Effects

Prolonged or repeated skin contact may cause sensitization dermatitis and possible destruction and/or ulceration. May cause reproductive and fetal effects. Repeated exposure may cause tingling in the extremities and other nervous system abnormalities.

Exposure limit(s)

TLV: 100 ppm; 410 mg/m3 (as TWA) (ACGIH 1994-1995). OSHA PEL: TWA 100 ppm (410 mg/m3) NIOSH REL: TWA 100 ppm (410 mg/m3) NIOSH IDLH: 1000 ppm

Poison Class

4

Fire Fighting Measures

Flash Point

10

Autoignition

430

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Vapor may cause flash fire. Water may be ineffective. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Water may be ineffective. For large fires, use water spray, fog or alcohol-resistant foam. Do NOT use straight streams of water

Upper exp. limit

8.2

Lower exp. limit

1.7

Fire Potential

Flammable liquid. Contact with strong oxidizers may cause fire.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Provide ventilation.

Stability and Reactivity

Incompatibilities

Incompatible with polymerization catalysts (peroxides, persulfates) light, heat, nitric acid and other strong oxidizers, ammonia, amines, halogens and halogen compounds.

Stability

Stable at room temperature for a limited storage period.Vapors are uninhibited and may form polymers in vents, causing stoppage. Violent eruption of closed containers may occur when polymerization occurs. Polymerization may be caused by elevated temperature, oxidizers, peroxides, or sunlight.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Combustion Products

Toxic gases and vapors (such as carbon monoxide) may be released in a fire involving methyl methacrylate.

Transport Information

UN Number

1247

Hazard Class

3

Packing Group

II

HS Code

2916 14 10