The principles of green chemistry include: 1. Prevention of waste. 2. Atom economy. 3. Less hazardous chemical syntheses. 4. Designing safer chemicals. 5. Safer solvents and auxiliaries. 6. Increasing energy efficiency. 7. Use of renewable feedstocks. 8. Reducing derivatives. 9. Catalysis. 10. Design for degradation. 11. Real-time analysis for pollution prevention. 12. Inherently safer chemistry for accident prevention.