A piece of laboratory glassware with a stopcock used to separate two immiscible liquids of different densities or to perform liquid-liquid extraction. The denser liquid settles to the bottom and can be drained off separately. Essential for solvent extraction techniques.
Properties & Characteristics
A separating funnel (separatory funnel) is a piece of laboratory glassware used to separate two immiscible liquids of different densities by allowing them to form distinct layers and draining the lower layer through a stopcock. The device exploits the difference in density between the two liquid phases. It is a key piece of equipment for liquid-liquid extraction. Common extractions use organic solvents such as diethyl ether, ethyl acetate, or dichloromethane.
Uses & Applications
Separating funnels are used in laboratory solvent extraction to purify organic compounds from aqueous reaction mixtures. They are used to remove impurities or transfer a desired compound between solvents. Industrial-scale equivalents are used in pharmaceutical and chemical manufacturing.
Safety Information
Many organic solvents used in separating funnel extractions are flammable and toxic. The funnel should be vented regularly during use to release solvent vapour pressure. Work should be conducted in a fume hood.
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
A piece of laboratory glassware with a stopcock used to separate two immiscible liquids of different densities or to perform liquid-liquid extraction. The denser liquid settles to the bottom and can be drained off separately. Essential for solvent extraction techniques.
Separating funnels are used in laboratory solvent extraction to purify organic compounds from aqueous reaction mixtures. They are used to remove impurities or transfer a desired compound between solvents. Industrial-scale equivalents are used in pharmaceutical and chemical manufacturing.
Many organic solvents used in separating funnel extractions are flammable and toxic. The funnel should be vented regularly during use to release solvent vapour pressure. Work should be conducted in a fume hood.
Editorial standards: Chemical data is sourced from peer-reviewed literature,
CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA,
and IAEA. For educational purposes only — always consult official SDS documentation and qualified
professionals before handling chemicals.
