BLACKENING CHEMICALS ONLINE. - When purchasing blackening chemicals online, it's essential to select products that match your specific needs, whether for industrial, hobbyist, or artistic applications. Blackening is a chemical process used to impart a black finish to metals, and it can be used for aesthetic purposes or to improve corrosion resistance. Here’s a guide on what to look for and where to find these chemicals: - Where to Buy Online 1. Specialty Chemical Suppliers: . Caswell Inc.: Offers a range of blackening kits for various metals. . Birchwood Casey: Known for their gun bluing and blackening products. . Jax Chemicals: Provides a variety of blackening and patina solutions. 2. Industrial Suppliers: . McMaster-Carr: Stocks industrial-grade blackening solutions. . Grainger: Supplies commercial and industrial chemicals, including blackening agents. 3. Retailers and Marketplaces: . Amazon: A wide variety of blackening products for different metals and applications. . eBay: Often carries both new and used blackening kits and chemicals.