Methyl cyanoacrylate is a highly effective, single-component, low-viscosity, fast-curing adhesive (instant adhesive). It cures extremely quickly; upon contact with even trace amounts of moisture after application, it rapidly polymerizes to form a strong, tough, transparent long-chain polymer. It is widely used in industrial manufacturing, electronics assembly, and other fields.
| Chemical Name | Methyl Cyanoacrylate |
| Chemical Formula | C₅H₅NO₂ |
| CAS | 137-05-3 |
| Appearance | Colorless liquid |
| Melting point | - |
| Boiling point | 48-49 °C （3mm Hg） |
| Density（ρ20）, g/cm³ | 1.1044 g/cm³ |
| Molecular Weight | 111.1 |
| Solubility | It is readily soluble in diethyl ether, chloroform, dichloromethane, benzene, and dioxane. It is insoluble in methanol and ethanol. |
(Methyl Cyanoacrylate) is primarily used as the key ingredient in instant adhesives (such as the classic 502 glue). It triggers anionomerization instantly upon contact with trace amounts of moisture in the air and is widely used in industrial manufacturing, consumer product repairs, forensic science, and the treatment of minor injuries.
Optimal Temperature: For unopened products, we recommend storing them in the refrigerator at 2°C to 8°C to maximize shelf life.
Handling After Opening: After use, be sure to wipe away any residual adhesive from the bottle opening, tightly secure the cap, and place the bottle in a sealed bag containing a desiccant or in its original packaging.
Re-warming Procedure: Do not open the bottle immediately after removing it from the refrigerator. Allow it to return to room temperature first (approximately several tens of minutes). Otherwise, moisture in the air will condense inside the bottle due to the cold, causing the adhesive to deteriorate and become ineffective.
Storage Environment: Store in a cool, dry, well-ventilated area out of reach of children. Keep away from heat sources, sparks, and open flames, and avoid direct sunlight.
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