(chemical formula: Cr₂O₃) is an inorganic green pigment synthesized by high-temperature reduction of chromates or reaction of potassium dichromate with sulfur. It exhibits a dark olive to forest green hue and demonstrates exceptional stability lightfastness 8heat resistance >1000°C). Non-toxic but contains heavy metal chromium.  

Key Properties:  

Chemical Inertness: Resistant to acids, alkalis, solvents, and corrosive gases  

High Melting Point: ~2435°C (refractory grade)  

High Hardness: Mohs 8-9 (usable as abrasive)  

IR Reflectivity: Critical for military camouflage coatings  

Primary Applications:  

1. Coatings & Pigments:  

 Architectural paints (weather-resistant exteriors), automotive primers, ceramic glazes  

 Artist paints (oil, watercolor)  

2. Industrial Materials:  

  Refractory bricks, foundry sands (steel metallurgy)  

  Polishing compounds (precision metals, optical glass)  

  Stealth coatings (infrared reflection)  

3. Emerging Uses:  

   Catalyst supports (chemical synthesis)  

   Green cement coloration