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METHYL METHACRYLATEICSC: 0300
November 2003
CAS #: 80-62-6Methacrylic acid methyl ester
Methyl 2-methylpropenoate
UN #: 1247
EINECS #: 201-297-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Highly flammable.  Vapour/air mixtures are explosive.  NO open flames, NO sparks and NO smoking.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.  Use foam, powder, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

 AVOID ALL CONTACT!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Shortness of breath. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Nausea. Vomiting. Abdominal pain.  Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: chemical protection suit and filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Remove all ignition sources. Do NOT wash away into sewer. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 3; UN Pack Group: II 

STORAGE
Fireproof. Separated from strong oxidants, strong bases and strong acids. Cool. Keep in the dark. Keep in a well-ventilated room. Store only if stabilized. 
PACKAGING
 
METHYL METHACRYLATE ICSC: 0300
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
The vapour mixes well with air, explosive mixtures are easily formed. Vapours are uninhibited and may polymerize, causing blockage of vents. 

Chemical dangers
The substance may polymerize due to warming or due to heating, under the influence of light, polymerization catalysts and strong oxidants. This generates fire or explosion hazard. Reacts with strong acids and strong bases. 

Formula: CH2C(CH3)COOCH3 / C5H8O2
Molecular mass: 100.1
Boiling point: 100.5°C
Melting point: -48°C
Relative density (water = 1): 0.94
Solubility in water, g/100ml at 20°C: 1.6
Vapour pressure, kPa at 20°C: 3.9
Relative vapour density (air = 1): 3.5
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.09
Flash point: 10°C o.c.
Auto-ignition temperature: 421°C
Explosive limits, vol% in air: 1.7-12.5
Octanol/water partition coefficient as log Pow: 1.38  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion. 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. 

Inhalation risk
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the peripheral nervous system. 


Occupational exposure limits
TLV: 50 ppm as TWA; 100 ppm as STEL; (SEN); A4 (not classifiable as a human carcinogen).
MAK: 210 mg/m3, 50 ppm; peak limitation category: I(2); sensitization of skin (SH); pregnancy risk group: C.
EU-OEL: 50 ppm as TWA; 100 ppm as STEL 

ENVIRONMENT
The substance is harmful to aquatic organisms. 

NOTES
Usually contains hydroquinone, hydroquinone methyl ether and dimethyl t-butylphenol as inhibitors of polymerization.
An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: F, Xi; R: 11-37/38-43; S: (2)-24-37-46; Note: D 

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    See Also:
       Toxicological Abbreviations
       Methyl methacrylate (SIDS)
       Methyl methacrylate (CICADS 4, 1998)
       Methyl Methacrylate (IARC Summary & Evaluation, Volume 60, 1994)