International Chemical Safety Cards METHYL METHACRYLATE ICSC: 0300 Methacrylic acid methyl ester Methyl 2-methylpropenoate CH2C(CH3)COOCH3 / C5H8O2 Molecular mass: 100.1 ICSC #    0300 CAS #     80-62-6 RTECS # OZ5075000 UN #        1247 EC #         607-035-00-6 November 26, 2003 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Highly flammable. NO open flames, NO sparks, and NO smoking. Foam, powder, carbon dioxide. EXPLOSION Vapour/air mixtures are explosive. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling. In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE AVOID ALL CONTACT!  •INHALATION Cough. Shortness of breath. Sore throat. 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. 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 take to a doctor.  •INGESTION Nausea. Vomiting. Abdominal pain. Do not eat, drink, or smoke during work. Rinse mouth. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. Remove all ignition sources. (Extra personal protection: filter respirator for organic gases and vapours.) Chemical protection suit. Fireproof. Separated from strong oxidants, strong bases, strong acids. Cool. Keep in the dark. Keep in a well-ventilated room. Store only if stabilized. Note: D F symbol Xi symbol R: 11-37/38-43 S: 2-24-37-46 UN Hazard Class: 3 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0300 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards METHYL METHACRYLATE ICSC: 0300 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The vapour mixes well with air, explosive mixtures are easily formed. Vapours are not inhibited, they may polymerize and block the vents. CHEMICAL DANGERS: The substance may polymerize due to warming or due to heating, under the influence of light , polymerization catalysts and strong oxidants with fire or explosion hazard. Reacts with strong acids strong bases . OCCUPATIONAL EXPOSURE LIMITS: TLV: 50 ppm as TWA; 100 ppm as STEL; SEN; A4; (ACGIH 2003). MAK: 50 ppm, 210 mg/m³; Sh; Peak limitation category: I(2); Pregnancy risk group: C; (DFG 2003). OSHA PEL: TWA 100 ppm (410 mg/m3) NIOSH REL: TWA 100 ppm (410 mg/m3) NIOSH IDLH: 1000 ppm ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation, through the skin and by ingestion. INHALATION RISK: A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the eyes , the skin and the respiratory tract . 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 . PHYSICAL PROPERTIES Boiling point: 100.5°C Melting point: -48°C Relative density (water = 1): 0.94 Solubility in water, g/100 ml 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 ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. N O T E S 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. Transport Emergency Card: TEC (R)-30S1247 NFPA Code: H2; F3; R2; ADDITIONAL INFORMATION ICSC: 0300 METHYL METHACRYLATE (C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.