Galinstan Liquid Metal Alloy
PRODUCT DESCRIPTION
Galinstan is a non-toxic, silver metallic room temperature of liquid alloy (melting point near about -19o C designed as a safe replacement for mercury in thermal and electronic applications. It offers high electrical and thermal conductivity, excellent fluidity, and the ability to wet a wide range of surfaces due to a thin Ga₂O₃ oxide layer formed on exposure to air. Its stability, safety, and performance make it suitable for advanced electronic applications.
CHEMICAL COMPOSITION (TYPICAL)
- Gallium (Ga): 68 – 69 %
- Indium (In): 21 - 22 %
- Tin (Sn): 9.5 – 10.5 %
PHYSICAL & CHEMICAL PROPERTIES
- Appearance: Bright, silver metallic liquid
- Melting Point: –19 °C (approx.)
- Boiling Point: >1300 °C
- Density (20 °C): ~6.44 g/cm³
- Viscosity (20 °C): ~0.0024 Pa·s
- Thermal Conductivity: ~16.5 W/m·K
- Electrical Conductivity: ~3.4 × 10⁶ S/m
- Surface Tension: 0.53 – 0.72 N/m (20 °C)
- Specific Heat Capacity: ~296 J/kg·K
- Vapor Pressure: <10⁻⁸ Torr at 500 °C
- Solubility: Insoluble in water and most organic solvents
STORAGE & HANDLING
- Store in tightly sealed glass or polymer containers.
- Avoid prolonged contact with light metals.
- Use clean, dry tools made of glass, PTFE, HDPE, or high-grade stainless steel.
- No refrigeration required (stable at room temperature).
- Prevent contamination with dust or reactive metals.
TYPICAL APPLICATIONS
- Clinical thermometers (mercury replacement)
- Heat-transfer fluids & thermal interface materials
- LED cooling modules
- Semiconductor and power device cooling
- Flexible and stretchable electronics
- Soft robotics actuation systems
- Microfluidics & lab-on-chip devices
- Conductive inks and printed electronics
MATERIALS TO AVOID
- Aluminum (strong attack)
- Copper, zinc, tin, lead (amalgam-like interaction)
- Strong oxidizers and acids
- Halogens
PACKAGING
- Supplied in glass bottles, polymer containers, sealed vials or Argon filled Bottles.
- Standard pack sizes: 10 g, 50 g, 100 g, 250 g, 500 g, 1 kg.
Our Certifications
