Molecular Sieve 3A is a type of synthetic zeolite with very small pores measuring approximately 3 angstroms (0.3 nm) in diameter.
Due to its properties, Molecular Sieve 3A is capable of allowing molecules smaller than 3 angstroms to pass through while retaining molecules larger than 3 angstroms.
The 3A pores adsorb H₂O molecules and retain compounds larger than 3 Å, preventing the loss of valuable organic substances.
It provides a high moisture adsorption capacity at low relative humidity and elevated temperatures, while also offering a rapid adsorption rate.
Applications of Molecular Sieve 3A:
- Drying of hydrogen, oxygen, nitrogen, and helium;
- Drying of natural gas and biogas (removes water vapor without adsorbing larger molecules such as hydrocarbons);
- Manufacturing and storage of insulating glass units (3A beads in spacer bars absorb moisture inside the glazing unit, preventing condensation);
- Used as a desiccant in packaging to maintain a dry environment;
- Removal of water from liquefied petroleum gas (LPG), propane, and butane;
- Moisture removal from methanol, ethanol, acetone, and other solvents.
