EMS CATALOG NO: 18800
EMS PRODUCT: Methyl Methacrylate
DATE: 01/21/2002
PAGE NUMBER: One of 5
MATERIAL SAFETY DATA SHEET
The information contained herein is based on data considered
accurate. However, no warranty is expressed or implied
regarding the accuracy of these data or the results to be
obtained from the use thereof.
Electron Microscopy Sciences assumes no responsibility for
personal injury or property damage to vendees, users or
third parties caused by the material. Such vendees or users
assume all risks associated with the use of the material.
ELECTRON MICROSCOPY SCIENCES
321 MORRIS ROAD
P.O. BOX 251
FORT WASHINGTON, PA 19034 24 HOUR EMERGENCY PHONE NUMBER
(215) 646-1566 CHEMTREC: (800) 424-9300
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FOR PRODUCT AND SALES INFORMATION
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CONTACT ELECTRON MICROSCOPY SCIENCES OFFICE ABOVE.
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PRODUCT IDENTIFICATION
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PRODUCT NAME: Methyl Methacrylate
CHEMICAL NAME: 2-Propanoic acid, 2-Methyl-, methyl
ester
RTECS #: 025075000
FORMULA: C5H8O2
MOLECULAR WEIGHT: 100.12
TSCA: On Public List
CAS REG NO. 80-62-6
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HAZARDOUS INGREDIENTS
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Methyl Methacrylate 80-62-6 99.8 min OSHA PEL - 100 ppm
ACGIH TWA - 100 ppm STEL - 75 ppm
Other ester adducts N/A 0.2 max N/A N/A
inhibitor: 4-Methaxyphenol (MEHQ) 150-76-5 0.005 -5 mg/m3
-5 mg/m3
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PHYSICAL DATA
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BOILING POINT @ 760 mm Hg: 100-101oC (213.8oF)
MELTING POINT: -43oC (-41.67oF)
SPECIFIC GRAV. (@20oC): 0.9440
VAPOR PRESSURE @20oC): 29mmHg
VAPOR DENSITY (AIR-1): 3.6
SOLUBILITY IN H2O: Moderate
VOLATILES BY VOL: 100%
EVAPORATION RATE (Butyl Acetate=1) >1
APPEARANCE AND ODOR: Clear, colorless, mobile liquid; acrid,
fruity odor.
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FIRE AND EXPLOSION DATA
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FLASH POINT: 10oC (50oF)
FLAMMABLE LIMITS IN AIR: LFL - 1.7% UFL - 8.2%
EXPLOSION LIMITS IN AIR: LEL - 2.12% UEL - 12.5%
EXTINGUISHING MEDIA: Dry Chemical, Foam or Carbon Dioxide
SPECIAL FIRE FIGHTING PROCEDURES:
Wear self-contained breathing apparatus and full protective
clothing to prevent contact with skin and eyes. Water spray may
be ineffective as extinguishing agent but can be used to keep
fire-exposed containers cool.
UNUSUAL FIRE & EXPLOSION HAZARD:
Vapor is heavier than air and may travel a considerable distance
to source of ignition. Heat can cause polymerization. Heated,
sealed containers can explode.
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HEALTH HAZARD INFORMATION
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TOXICOLOGY: ACUTE TOXICITY: MUSCLE WEAKNESS: COMA
orl-rat: LD50 7872 mg/kg JIHTAB 23:343,1941
inp-rat: LD50 1328 mg/kg JDREAF 51:1632, 1972
sub-rat: LD50 7500 mg/kg INMEAF 14:292, 1945
orl-mou: LD50 5204 mg/kg TOLED5 11:125,1982
inh-mou: LD50 18500 mg/m3/2H 85GHAT -:85, 1982
inp-mou: LD50 1 g/kg INMEAF 14:292, 1945
sub-mou: LD50 6300 mg/kg INHEAF 14:292, 1945
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IRRITATION:
skn-rab: Draize 10gm/kg open Not reported
JIHTAB 23:343, 1941
eye-rab: Draize 150mg Not reported
INMEAF 14:292, 1945
EFFECTS ON PREEXISTING HEALTH CONDITIONS: May become a sensitizer with
prolonged exposure.
EFFECTS OF OVEREXPOSURE:
ACUTE OVEREXPOSURE: Irritant. Vapor or mist can irritate the
nose and throat.
CHRONIC OVEREXPOSURE: Prolonged exposure will effect nervous
system.
EMERGENCY AND FIRST AID PROCEDURES:
EYES: Moderately Irritating. Flush with copious amounts of water
for at least 15 minutes. Assure adequate flushing by
separating the eyelids with fingers. Consult a physician.
SKIN: Moderately irritating. Wash with copious amounts of water
for at least 15 minutes. Remove contaminated clothing and
shoes and wash before wearing. Consult physician.
INHALATION: Remove to fresh air and monitor breathing. Give oxygen.
If breathing becomes difficult or signs of toxicity exists,
consult physician. If breathing stops, give artificial
respiration and consult physician.
INGESTION: Drink two glasses of water. Consult the local poison
center and a PHYSICIAN.
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REACTIVITY DATA
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CONDITIONS CONTRIBUTING TO INSTABILITY: Stable. Avoid heat, aging,
contamination and oxygen-free atmosphere.
INCOMPATIBILITY: Avoid contact with other oxidizing or reducing
agents, acids and bases, UV light and contamination.
HAZARDOUS DECOMPOSITION PRODUCTS: Will form toxic materials - carbon
dioxide and carbon monoxide.
CONDITIONS CONTRIBUTING TO HAZARDOUS POLYMERIZATION: May occur.
Avoid heat, oxygen-free atmosphere and UV light.
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SPILL OR LEAK PROCEDURES
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STEPS TO BE TAKEN IF MATERIAL IS RELEASED OR SPILLED:
Evacuate area and ventilate. Wear safety equipment as described
below. Avoid direct contact. Remove all ignition sources.
Ventilate are of spill or leak. For small quantities, absorb on
paper towels and evaporate in fume hood. Do not allow large
spills to enter sewer or any other confined area because of
explosion hazard. Absorb onto inert material (sand, vermiculite,
etc.) and pick up, keep in a closed container and hold for waste
disposal outdoors. Keep spills and cleaning runoffs out of
municipal sewers. Contaminated monomer may be unstable; add
extra inhibitor to prevent polymerization.
NEUTRALIZATION CHEMICALS: N/A
WASTE DISPOSAL METHODS:
Burn in a chemical incinerator equipped with an afterburner and
scrubber. Note: Observe all Federal, State, and Local Laws.
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SPECIAL PROTECTION INFORMATION
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VENTILATION REQUIREMENTS: Adequate ventilation required
(mechanical).
PERSONAL PROTECTIVE EQUIPMENT:
RESPIRATORY (SPECIFY IN DETAIL): NIOSH/MSHA approved respirator(SCBA)
EYE: Laboratory safety glasses or goggles
GLOVES: Butyl Rubber
OTHER CLOTHING AND EQUIPMENT: Lab coat or Chemical Suit for Large
spills.
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SHIPPING INFORMATION
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FIRE: 3 HEALTH: 2 REACTIVITY: 2 SPEC. HAZARD: NONE
HAZARD CLASS OR DIVISION: 3 PACKING GROUP: II
LABELS REQUIRED: FLAMMABLE LIQUID UN ID NUMBER: 1247
METHYL METHACRYLATE MONOMER, INHIBITED SARA TITLE III(RQ): 1000
CERCLA: 1000
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SPECIAL PRECAUTIONS
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Store in a tightly closed container in dry, cool area out of direct
sunlight. Avoid contact with material. Limit indoor storage of
flammable liquids to approved areas equipped iwth automatic
sprinklers. Leave air space over liquid surface in all containers.
Ground all containers when transferring material. It is advisable to
use material within 6 months. Monitor inhibitor level during
storage. Material stored in bulk should be tested for stability every
month; drums and pails every 3 months. Avoid prolonged or repeated
exposure. Lab should be equipped with a safety shower and an eye wash
station. Wash thoroughly after handling material. Keep away from
heat and open flames. Material should only be handled by qualified,
experienced professionals.
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