VCFERROUS HT - Hot Blackening Chemicals - Hot Blackening Chemicals are used in the hot black oxide process, a surface treatment method that provides a black, corrosion-resistant finish on ferrous metals. The black oxide layer is chemically formed by a reaction between the metal and the chemical solution, creating a durable and aesthetically pleasing finish. * Hot Blackening Chemicals 1. Alkaline Cleaners Removes grease, oil, and surface contaminants. Example: Sodium hydroxide-based degreasers. 2. Blackening Salts Primary chemicals for the black oxide conversion. Contain sodium hydroxide and oxidizing agents (e.g., sodium nitrite or sodium nitrate). 3. Post-Treatment Sealants Oils or waxes to enhance corrosion resistance and provide a satin finish. Examples: Water-displacing oils or emulsions. 4. Deoxidizers/Conditioners Optional step to remove light rust or oxides before blackening. Typically acidic formulations (e.g., phosphoric acid). # VCFERROUS HT - Hot Blackening Chemicals Manufacturer.