Triethylene glycol dimethacrylate

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Description

Additional Information

Category
Acrylate series
Describe
Triethylene glycol dimethacrylate (TEGDMA) is a common bifunctional methacrylate monomer, which is widely used in light-curing materials, dental resins, coatings, adhesives, 3D printing and other fields. It is a cross-linking monomer with balanced performance, low viscosity and high activity.
Cas No.
109-16-0
Purity
mixture
Synonym(s)
TEGDMA

Physical and chemical properties

1. Chemical Identity
- Chemical Name: Triethylene glycol dimethacrylate
- IUPAC Name: [2-(2-Methylprop-2-enoyloxy)ethoxy]ethyl 2-methylprop-2-enoate
- Synonyms: TEGDMA, TIEGDMA, TEGMA
- CAS Number: 109-16-0
- EC Number: 203-652-6
- Molecular Formula: C14?H22?O6?
- Molecular Weight: 286.32 g/mol
2. Physical Properties
- Appearance: Clear, colorless liquid.
- Odor: Mild, characteristic, ester-like.
- Melting Point: -52 °C (-62 °F)
- Boiling Point: >250 °C (>482 °F) at 1013 hPa
- Density: 1.09 g/cm³ at 20 °C
- Solubility:
- In Water: 5 g/L at 20 °C (Slightly soluble)
- In Organic Solvents: Soluble in many common organic solvents.
- Vapor Pressure: <0.01 hPa at 20 °C
- Viscosity: 10 - 15 mPa·s at 20 °C
3. Chemical Properties and Stability
- Stability: Stable under recommended storage conditions. Typically supplied with a polymerization inhibitor (e.g., MEHQ) to prevent spontaneous polymerization.
- Incompatibilities: Incompatible with strong oxidizing agents, strong bases, strong acids, reducing agents, peroxides, and free-radical initiators.
- Hazardous Polymerization: May occur if not properly inhibited or if exposed to high temperatures, direct sunlight, UV radiation, or contaminants. Polymerization is a highly exothermic reaction.
- Hazardous Decomposition Products: Combustion may produce toxic fumes of carbon monoxide (CO) and carbon dioxide (CO2?).
4. Other Key Data
- Flash Point: >150 °C (>302 °F) - Closed cup
- Refractive Index (n20/D): ~1.461