how much percent solution of nitric acid is best to melt locks

When attempting to dissolve metal locks, concentrated nitric acid, typically around 68% nitric acid solution, is often considered. However, using nitric acid for this purpose poses significant safety and legality concerns. **Safety Considerations:** - Concentrated nitric acid is highly corrosive and can cause severe burns. Proper personal protective equipment (PPE) such as gloves, goggles, and face protection should be worn. - Fumes produced by nitric acid can be hazardous. Adequate ventilation or a fume hood is necessary. - It is usually illegal to use nitric acid for illegal activities, such as stealing or destroying property. **Legal and Practical Considerations:** - It's important to comply with local laws regarding the use of chemicals. - If you are locked out or need to remove a lock, contacting a professional locksmith is the safest and most lawful option. Always prioritize safety and legality when handling any chemicals.