Hazardous Material: Flammable Materials

Products Used

• Methyl Methacrylate Monomers
• Orange Solvent
• B400 & 401 Adhesives
• True-Stain Acrylics
• Plug-it Solvent, Plug-it Accelerator
• Detachol Adhesive Removers
• Dri-Purge Aerosol
• S2260 & 1205 Prime Coats
• Ethyl Alcohol, Acetone, Xylenes, Toluene, Trichloroethylene, Isopropanol, Wax Remover

Description

These products are used to fabricate resin-based dental appliances, as adhesives, and for cleaning purposes.

Physical Hazards

DANGER: Extremely flammable liquids. Flash point below 100°F; combustible liquids between 100°F–200°F.

Health Effects

• Vapors can travel and ignite, causing explosions.
• High exposure affects CNS: dizziness, sedation, coma, death.
• Harmful by inhalation and skin contact.

PPE

Wear splash goggles, chemical-resistant gloves, and a lab coat. Required for spill cleanup >1L.

Work Practices

• Dispense <1 oz in a well-ventilated area.
• Larger quantities: use fume hood in D1.
• Eliminate all ignition sources.

Storage

• Less than 10 gallons: storage outside flammable cabinet allowed.
• More than 10 gallons: use approved flammable liquid storage cabinet.

Spill & Accident Procedures

Waste Disposal

Place in container labeled “Hazardous Waste” (D352). Submit Chemical Collection Request to EH&S.

Hazardous Material: Methyl Methacrylate

Products Used

Examples: Temp Bridge Resin, Ortho Resin, Duralay, Lucitone 199, Triad VLC bonding agents, GC Pattern Resin, Perm Reline & Repair.

Description

Used in fabricating dentures, trays, occlusal guards, resin patterns, orthodontic appliances.

Physical Hazards

• Highly flammable monomer. Vapors may flash back to ignition source.
• Heat induces polymerization with energy release.

Health Effects

• Inhalation: CNS depression, dizziness, sedation, death in high exposure.
• Skin contact: irritation and defatting effect.

PPE & Work Practices

Wear goggles, gown, gloves. Dispense small amounts in ventilated area; large amounts in fume hood.

Storage

Follow same flammable material rules: approved cabinet for >10 gallons.

Spill Response

• Neutralize spill with absorbent pads or sand.
• Avoid vapors; PPE required.
• Kits in D3, D065, B307, B229, D-451A.

Waste Disposal

Label container as hazardous and contact EH&S.

Hazardous Material: Fine Particle Materials

Products

Gypsum stones, acrylic powders, pumice, barium sulfate, aluminum oxide, walnut shells.

Description

Used for cleaning, abrasion, polishing, mold fabrication, and radiopaque appliance production.

Hazards

• Dust inhalation: respiratory irritation.
• Skin/eye irritation.
• Barium sulfate: chronic exposure can cause baritosis.

PPE

Goggles, gloves, gown, dust mask or respirator when exposed.

Work Practices

Use suction or particle recovery units. Pumice must be used in a wet slurry to avoid dust.

Storage

Keep in cool, dry, ventilated area. Open containers retain residues; avoid moisture.

Spill Response

Ventilate; sweep or vacuum (wet sweep preferred); avoid dust clouds.

Waste

Acrylic polymers treated as hazardous waste; dispose per EH&S guidelines.

Hazardous Material: Cleaning and Disinfectant Solutions

Products

Banicide (glutaraldehyde), Biocide (iodophor), Clorox bleach, Tide detergent.

Description

Used for cleaning/disinfecting metal and resin dental appliances.

Physical Hazards

Not flammable; Biocide may release iodine vapors at high temps.

Health Effects

• Eye: severe damage if undiluted.
• Skin: burns from undiluted solutions.
• Inhalation: respiratory irritation, nausea (Banicide sensitive individuals).

PPE

Goggles/face shield, gloves, gown.

Important Note

Do NOT mix Clorox with ammoniated products.

Spill Response

• Diluted spills: mop and dispose via sewer.
• Dry Tide detergent: sweep and containerize.

Waste Disposal

• Triple rinse containers; puncture before disposal.
• Small diluted solutions → sewer system.

Hazardous Material: Organic Acids

Examples

Acetic Acid, Lactic Acid.

Hazards

Corrosive; causes burns to skin and eyes; inhalation harmful.

PPE

Goggles, neoprene gloves, lab coat. For >1L or cleanup: apron required.

Ventilation

Dispense concentrated acids in fume hood.

Storage

• Separate from bases, oxidizers, and flammable solvents.
• Transport glass containers >1L in spill-proof carriers.

Spill Procedures

Flush skin 15 mins; neutralize with sodium bicarbonate; contact EH&S if large spill.

Waste

Label and store for EH&S collection.

Hazardous Material: Inorganic Acids

Examples

Hydrochloric Acid (others possible).

Hazards

Corrosive to skin, eyes, mucous membranes. Inhalation of fumes dangerous.

PPE

Goggles, neoprene gloves, lab coat, closed shoes.

Storage

• Keep in labeled containers: “Danger, Corrosive.”
• Store in acid cabinet, away from bases and flammables.

Spill Procedures

Flush skin 15 mins; neutralize with sodium bicarbonate; call EH&S.

Waste

Contact EH&S for collection; use UW Hazardous Waste label.