UCLA Department of Chemistry and Biochemistry May 2009 Types of Vinylic Monomers Utilized in Radical Polymerizations Acrylamides Methacrylamides Acrylates Methacrylates Vinyl Acetates Styrene ID: 200542
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Slide1
Safe Operating Procedure for the Handling of Vinylic Monomers
UCLA
Department of Chemistry and Biochemistry
May 2009Slide2
Types of Vinylic Monomers Utilized in Radical Polymerizations
Acrylamides
Methacrylamides
AcrylatesMethacrylatesVinyl AcetatesStyreneVinyl EthersAcrylonitrileAlkenesSlide3
Toxicity of Vinyl Monomers
Vinyl monomers are particularly hazardous:
Michael Acceptors
Highly reactiveKnown carcinogensCause Liver and Kidney damageLachrymatorsSlide4
Classification of Monomers for Handling
Solid monomers
SPMA, AMPS…
Liquid monomersPEGA, PEGMA, BA…Volatile/Very ToxicNIPAAm, AA, ACALWAYS check the MSDS and discuss the use of new monomers with safety officers or PISlide5
Solid Monomers Procedure
Wear appropriate PPE
Lab coat, gloves, goggles, closed-toed shoes
Check MSDS for monomerCalculate amount needed based on other reagentsCarefully weigh into reaction flask or onto wax paperIf using wax paper, carefully transfer into flaskDo not create airborne “dust”/ do not inhale dustIf spilled
Immediately inform safety officer
Wear respirator
Clean balance area/brush powder into labeled waste container
Should be labeled that it contains a monomerSlide6
Liquid Monomer Procedure
Wear appropriate PPE
Lab coat, gloves, goggles, closed-toed shoes
Check MSDS for monomerCalculate amount needed based on other reagentsLiquid Monomers should NEVER be weighed on an open balance, ONLY USE IN HOODUse density to calculate volume neededSyringe amount into reaction flaskRinse syringe with appropriate solvent into labeled waste container
If spilled
Immediately inform safety officer
Clean area with appropriate solvent and towels
Dispose of towels into waste container
Label waste container that it contains a monomerSlide7
Volatile/Toxic Monomer Procedure
Wear appropriate PPE
Lab coat, gloves, goggles, closed-toed shoes
Respirator is optionalCheck MSDS for monomerCalculate amount need based on other reagentsVOLATILE/TOXIC MONOMERS CAN ONLY BE USED IN A HOOD!Place paper towels unfolded in hoodTare sealed-reaction flask
Place stabilized sealed-reaction flask on paper towels
1) Pull sash down as far as possible
2) Use syringe/spatula to place monomer into reaction flask
3) Seal reaction flask
4) Remove gloves and leave in hood
5) Put new gloves on and take flask to balance
Add/remove monomer (repeat 1-5)Slide8
Volatile/Toxic Monomer Procedure
When finished
Rinse/wipe down all reusable materials that came in contact with monomer with appropriate solvent
Dispose of solvents in labeled containerPlace towels & gloves in appropriately labeled waste containerIf spilledIf spill is in hoodClean area with appropriate solvent and towels
Dispose of towels into waste container
Should be labeled that it contains a monomer
If small spill outside of hood
Immediately inform all lab members and leave lab
Inform safety officers
DO NOT REENTER LAB WITHOUT RESPIRATOR
Clean area with appropriate solvent and towels
Dispose of towels into waste container
Should be labeled that it contains a monomer
If large spill outside of hood
As for small spill
Do not attempt to clean spill, instead contact PI & UCLA HAZMAT