Ethyl methacrylate

  • Ethyl 2-methyl-2-propenoate
  • 2-Methyl-2-Propenoic Acid Ethyl Ester
Formula
CH2=C(CH3)COOC2H5
Structure
Description
Clear, colorless liquite with a sweet, sharp odor.
Uses
Ethyl methacrylate is used to make polymers, which in turn are used for building, automotive, aerospace, and furniture industries.

Registry Numbers and Inventories.
CAS
97-63-2
EC (EINECS/ELINCS)
202-597-5
EC Index Number
607-071-00-2
EC Class
Highly flammable; Irritant; Sensitising
R 11 36/37/38 43
S 9 16 29 33
RTECS
OZ4550000
RTECS class
Drug; Mutagen; Reproductive Effector; Primary Irritant
UN (DOT)
2277
Beilstein/Gmelin
471201
Beilstein Reference
4-02-00-01523
RCRA
U118
Swiss Giftliste 1
G-1191
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H10O2
Formula mass
114.15
Melting point, °C
-48
Boiling point, °C
100
Vapor pressure, mmHg
40 (25 C)
Vapor density (air=1)
3.6
Saturation Concentration
1.8% (20 C) (calculated)
Evaporization number
3.1 (butyl acetate=1)
Critical temperature
298
Critical pressure
32.5
Density
0.9158 g/cm3 (20 C)
Solubility in water
15 g/L (20 C)
Viscosity
0.63 mPas @ 20 C
Refractive index
1.4128 (20 C)
Partition coefficient, pKow
1.94
Heat of vaporization
35.9 kJ/mol
Heat of combustion
-3362 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Refrigerator (approx 4 C). Do not store in metal containers. Keep away from polymerization catalysts.
B2 D2B
Handling
Ground and bond containers when transferring material. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Use with adequate ventilation. Wash clothing before reuse. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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 gloves to prevent skin exposure. Clothing: Wear appropriate clothing to prevent skin exposure.
Respirators
If the exposure limit is exceeded and engineering controls are not feasible, 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. Where respirators are required, you must have a written program covering the basic requirements in the OSHA respirator standard. These include training, fit testing, medical approval, cleaning, maintenance, cartridge change schedules, etc. See 29CFR1910.134 for details.
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. A vapor suppressing foam may be used to reduce vapors.
Disposal code
1
Stability
Stable at room temperature in closed containers under normal storage and handling conditions. Stable. However, it may undergo explosive polymerization if uninhibited.
Incompatibilities
Incompatible with polymerization catalysts (peroxides, persulfates) light, heat, nitric acid and other strong oxidizers, ammonia, amines, halogens and halogen compounds.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
10
Autoignition, °C
435
Upper exp. limit, %
9.2
Lower exp. limit, %
1.7
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Will be easily ignited by heat, sparks or flame. Containers may explode if exposed to fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Water may be ineffective. Water may spread fire. If water is the only media available, use in flooding amounts.
Fire potential
Quite flammable. May polymerize explosively when involved in a fire.
Hazards
Sealed containers may rupture explosively if hot. Heat can cause a violent polymerization reaction with rapid release of energy. Vapors are heavier than air and can travel to a source of ignition and flash back.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
3
 
 
Reactivity
2
 

Health.
Poison_Class
4
Exposure effects
Dental technicians using bare hands with methyl methacrylate molding putty developed changes in the nerve impulse transmission in the fingers. Repeated skin exposures may cause tingling or prickling sensation of the skin.
   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.
   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 eye irritation. Lachrymator.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Do NOT allow victim to rub or keep eyes closed.

Transport.
UN number
2277
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
ETM
 
HS Code
2916 14 90
 
Std. Transport #
4907232
 
IMO Chemical Code
17
IMO Pollution Category
D
IMO Hazard code
S