Acetylated wood is a type of modified wood that has undergone a chemical process called acetylation. This process involves treating the wood with acetic anhydride, which replaces some of the wood's hydroxyl groups with acetyl groups. This modification enhances the wood's resistance to moisture, decay, and insect damage, making it more durable for outdoor use. The result is a wood product that maintains its natural appearance while offering improved stability and longevity. Acetylated wood is often used in applications such as decking, siding, and furniture, providing an eco-friendly alternative to traditional treated woods.