An oxygen scavenger is a substance or device that removes oxygen from its surroundings, usually to prevent oxidation, spoilage, or corrosion.
Here’s a detailed breakdown:
1. What an Oxygen Scavenger Is
An oxygen scavenger is typically a small packet or chemical additive that reacts with oxygen, lowering its concentration in a sealed environment. They’re often used where oxygen would cause damage—either by degrading products (food, medicine, electronics) or by corroding metals.
2. Common Types
• Iron-based scavengers – contain iron powder that rusts when exposed to oxygen, effectively removing it.
• Ascorbic acid–based scavengers – use vitamin C to chemically bind oxygen.
• Enzyme-based scavengers – often in liquid form for beverage preservation.
• Sulphite-based scavengers – used in industrial boilers to remove dissolved oxygen i